1 | Smartphones: versatile devices
These small technological jewels are now part of our daily life. Unlike the mobile phone whose main function is the oral communication, the smartphone proves to be a versatile foolproof! Internet browsing, sending emails, downloading apps or music files, games, photos … These mobile devices can do everything and it is not over with the arrival of new technologies!
This success is explained by five strengths:
A large touch screen and high definition
Access to broadband, even at very high speed (4G-LTE)
Applications in all areas of everyday life and work
The ability to read many types of Office and multimedia files
An ever increasing computing power.
Many models of smartphones out regularly launched by several global manufacturers (Apple, Samsung, Sony, LG, etc.). How to make a selection? Ergonomics, OS, connectivity … What are the really important criteria in the choice of smartphone that will accompany you every day and in all occasions?
To choose your smartphone, our buyer’s guide provides detailed answers to you to compare the various models of our range and discover which one best suits your needs.
SAR value (Specific Absorption Rate). This value determines the potential harmfulness of radio frequencies emitted by mobile phones. It must be less than 2 W / kg for the mobile to be used in France.
But beware, this is the big difference: between the LG G3 (0.300 W / kg) and the latest iPhone and Samsung S5 graze the 1 W / kg.
2 | The ergonomics of a smartphone
On a smartphone, the handling, ease of use and access to different applications depend in particular on the quality of the screen and keyboard. The delicacy is not to be neglected. The latest models have enjoyed a slimming cure as some measure only 7 mm thick.
The touch interface: the success of smartphones is partly explained by the widespread use of touch screens. Access to the various menus becomes easier and intuitive. The grip is almost immediate. Reducing screen edges also benefit from a larger display area. Thus, it increased from 65.7% on the LG Optimus G to 76.4% on the LG G3.
Some thirty years after the development of the first touch interface by William C. Hurst (founder of California-based ELO TouchSystems), this type of display has become widespread although some brands continue to offer non-touch models .
There are several technologies, but that based on capacitive systems has become a kind of standard for smartphones and tablets. Unlike screens called “resistive”, which must be pressed more or less strongly (depending on the quality of the sensors) with a finger or stylus on an icon to open an application, capacitive screens react as soon as one touches them or they are touched (slightly or hold to perform a particular action). They are also able to launch different functions when they detect multiple simultaneous touches. Thus, by “pinching” an image with two fingers you can zoom in / out. This is called multitouch.
The diagonal: for several years, this difference with mobile phones was obvious immediately. Smartphones possessed indeed a large screen. Today, the screen size has been segmented. Some models like the Sony Mobile Xperia M2 and Wiko Wax reach 4.7 inches or 4.8 inches (1 inch = 2.54 cm). Conversely, the catalog of several manufacturers displayed references made with a diagonal 3 inches as the Samsung Galaxy Pocket Neo and the Nokia Lumia 520.
Samsung Galaxy Note 4 Galaxy Note 4. With a 5.7 ??inch screen of exceptional visual quality (Quad HD Super AMOLED)
Among the large smartphones, there are the phablettes (contraction of the words “tablet” and “smartphone”). This is a device with a diagonal lies between that of a tablet (minimum of 7 inches) and that of a “big” phone (maximum 5 inches). This is the case of Huawei Ascend Mate 7 and its 6-inch screen.
Resolution: This is an important criterion. The higher the resolution, the higher you get a visual comfort for watching videos and web pages for example. Today, many models feature Full HD. Few smartphones (LG G3 and Galaxy Note 4) contender Quad HD (2560 x 1440). Their resolution reached 538 ppi (“Pixels per inch” or dpi “pixels per inch”). Comparable to that of an art book (440-600 dpi), it displays four times more pixels than 720p HD display.
Embedded technologies: the latest generation of smartphones enjoy performing screens (finer color, high definition). Four main technologies are used: LCD, Super AMOLED (Active-Matrix Organic Light-Emitting Diode), and Super AMOLED + IPS.
Compared to an LCD (two layers, one for the tactile aspect and the other for display), an AMOLED model is more efficient because each pixel is used wisely (each pixel is activated when necessary) .
About 20% brighter than AMOLED according to Samsung, Super AMOLED + screens have built-layer screen that senses touch and eliminates the presence of the charge air layer reflections. The viewing angle is also larger (180 degrees).
A curved screen … or square: the brands of designers do not lack imagination. For years, the screens are flat, but slightly curved slab would enhance the immersion in the content. See, because on a small screen and with the presence of small buttons this immersion seems not ideal (it’s the case with television sets). Nevertheless, there are some models that LG G Flex with a slab of 6 inches and the Samsung Galaxy Round (5.7 inch screen).
BlackBerry also put on the originality to offer … a square screen! The screen of 4.5 inches of its Passport is very useful for viewing office documents and sites.
The virtual keyboard: appeared simultaneously with the touch screen, it avoids burdening the smartphone with the integration of a real keyboard. But its use is not always obvious at first and requires a shorter or longer period of learning.
The physical keyboard: before the arrival of the iPhone, smartphones all had a real keyboard. Today they are no longer the majority, success requires touch. But there are still some who are either sliding or integrated with one of the two parts of the phone (eg, a clamshell model). They are convenient for professional uses.
The trackpad and stylus: beside physical and virtual keyboards, some devices try to impose or to resist with more or less success. This is the case of the trackpad (or trackball) Available on BlackBerry. But some users believe that this optical sensor is not very easy to use. The situation is more positive for the stylus which has not said its last word. Provided for example with the Galaxy Note, the S Pen facilitates note taking and drawing.
3 | Operating systems
There are four major operating systems (or Operating system – OS – English) for smartphones: Android, iOS, Windows Phone and BlackBerry OS. The vast majority of smartphones currently run on Android and iOS. In June 2014, Android was installed on approximately 71% of smartphones sold in France, 14.7% on iOS, Windows Phone and BlackBerry OS 10.6 on its own models, or 1%. Other OS accounted for 2.30% (Source: EcoConscient / Kantar)
The choice of an operating system depends on criteria, more or less objective:
The smartphone that interests you: if you are considering buying an iPhone, you will have no choice but iOS. By cons, there are HTC Android (including the One M8) or Windows Phone (8X).
Your equipment: if you already have an Apple computer, it is better to opt for an iPhone in order to facilitate synchronization of your files, emails and multimedia content.
Your business needs: If you use many Microsoft applications, buying a smartphone running Windows Phone is more practical (homogeneity documents, Excel spreadsheets perfect compatibility …).
Called Lollipop, including the latest version has a redesigned interface, a control increased notifications, multiple user accounts and the ability to have a guest mode. To enhance the security of personal data stored in a smartphone, Android 5 can lock access via a PIN code, a diagram or by combining shows connected (see section on accessories) with Smart Lock.
This version is also compatible with Google Chromecast allowing to enjoy online content (Netflix, YouTube, Google Play) directly to an HDTV.
Unlike Apple’s iOS and Windows Phone, this operating system is proposed by many handset manufacturers. If you are interested in an Android smartphone, your comparison will have to focus primarily on the technical specifications of the smartphone, any overlay software (see “Box of Tricks” below) of the manufacturer and the version of the OS.
But the big downside of this OS is the high fragmentation of the versions offered by the brands. Each manufacturer remains in effect master calendar of Android update to the models it sold. Result, some brands like Samsung in particular, prefer their newer models by offering all the updates.
Apple iPhone 6 This new version offers better interaction between applications.
Apple’s operating system is simple to use. Main asset: the thousands of applications. But it is impossible to install one that is not approved by Apple and is available through its App Store platform.
This constraint can also be an asset for people who already have a computer of this trademark. Apple has established a very well organized ecosystem and practice that allows to switch from one device to another (an iPhone to a MacBook or iPad) while finding the same files.
The latest version, iOS 8 provides no major innovations, but it corrects some essential points as better collaboration between applications and optimized interactions (call management, emails or documents) between its ecosystem of devices .
This version also benefits from Quicktype. This new keyboard offers three possibilities systematically words. It is “gifted” a self-learning ability: to As you type words and phrases, it can refine its suggestions.
Another interesting improvement: photo enforcement now has tools to make the image editing. As for Siri, the voice assistant, he is now able to provide the title of the played song.
Please note that this new version of IOS marks the end of the iPhone 4. It is compatible with all other devices out after.
Microsoft is still struggling to impose its operating system. However, this OS is not devoid of interest as confirmed by the latest update available since July 2014. The application management and customization (from the home page in particular) have been strengthened.
The notification alerts has improved (and customizable) with the arrival of a small icon in the status bar. One component is logically activated by sliding the top of the finger down the screen to help identify which notifications are displayed.
Skype is better integrated as it is possible to establish a video communication directly with its contact (which must also be equipped with the same application).
Finally, Windows Phone 8.1 offers different types of backup settings, data and applications.
Long reserved for executives who appreciated including the receipt of real-time mail (push email), BlackBerry smartphones have enjoyed a new design to seduce all addicted to emails and SMS. The presence of a physical keyboard is a considerable asset. The tenth version of the BlackBerry OS is available on high-end models. The virtual keyboard is very effective thanks to a predictive mode completely revised.
A special feature of this OS is support for Android applications. It is possible to install and use programs developed for the Google OS. So far, this interest was limited to software developed for Android 2.3 Gingerbread. With version 10.3, the support is extended to applications of Android Jelly Bean (4.1 and 4.2).
Dedicated accessories – the top selling:
Pack 3 adapters micro and nano SIM card Pack 3 adapters micro and nano SIM card € 5.99
Nokia Coloud Boom Headset WH-530 (Blue) Coloud Boom Headset WH-530 (Blue) € 29.90
Gablys Lite – connected Keychain (Black) Gablys Lite – connected Keychain (Black) € 24.90
Verbatim Micro SD 16GB (Class 10) + car charger Micro SD 16GB (Class 10) + car charger € 26.89
Apart from the four main OS, others are struggling to exist or to resist.
Tizen open source OS from a Linux kernel, Tizen is announced as the new Samsung weapon, designed for use on smartphones and tablets, as well as connected TVs and automotive equipment. But his arrival is constantly postponed.
Firefox OS: originally called Boot to Gecko (B2G) and published by the Mozilla Foundation (Firefox browser editor), this OS is distinguished by its accessibility. A dozen smartphones “basic” are equipped with Alcatel and ZTE and this operating system is deployed in over twenty countries.
Ubuntu Phone: released in June 2008, this open source OS is derived from Ubuntu. Free, it can be installed on any smartphone running Android. The first smartphone running Ubuntu Phone MX4 should be the Chinese brand Meizu.
4 | Processor, memory and battery
The latest generation of smartphones are close to the computer world with technical features continuously improved and optimized.
There are 10 or 15 years, telephones (with the exception of some hybrids at Palm particular) were used only for voice communication. The frequency and CPU power therefore were not primordial characteristics and were even ignored. It was still far from speaking of “smartphones”!
Today many phones benefit from performance processors clocked at around 2 GHz. But the processors with four cores (quad-core) are no longer exceptions. This element ensures a good speed of execution and take full advantage of current and future multimedia applications.
The downside, these “monsters” of power are expensive … and the processor frequency is not the sole determinant.
It is responsible for temporarily storing applications. With a larger amount of RAM, more applications can be opened simultaneously and co-exist in the memory, which allows switching from one to the other more quickly. The operation multitasking is then improved. But everything depends on the integration of components and mastery of the OS.
Today, RAM is usually 1 GB, even on entry-level models. Some high-end references, like the Galaxy Note 4 include 3 GB of memory.
Apple iPhone 6 6 The iPhone has only 1GB of RAM, but this has no negative impact on its functioning
High autonomy is a criterion to be considered for choosing a smartphone, because it avoids recharge it often. Before selecting a model, make sure autonomies 3G communication mode and multimedia use. Another important indicator, battery capacity, expressed in “mAh”. The higher the value, the greater the capacity is important. 3000 mAh is no longer an exception.
Regarding charging, the battery is not the only weak link. The micro-USB cable can be also involved. Result, charging can last hours or even never happen almost 100%. If you see this failure, please purchase a new cable compatible with your phone. There are models sold around 10 € (note the cable length is quite short).
You can also better ‘manage’ the battery life thanks to dedicated applications for this purpose.
The offer is very broad. These include Battery Defender, GB & Power Battery Saver Widget and Juice Defender (not the most affordable for beginners), all three for Android phones. IOS (iPhone and iPad), there including HD Free Battery and Battery Doctor who is free software.
These applications more or less the same goal: tracking intensive applications to offer to disable them. They let you know the exact percentage of the battery and thus the remaining period of autonomy, but also disable the various connections night. Different user profiles are pre-registered but customization is also possible.
Smartphones are small multimedia computers, it is often possible to store photos and videos. Must still have a sufficiently large memory capacity. Some very high-end smartphones like the iPhone 6 have high internal memory (up to 128GB). Conversely, the entry-level models are content to 4GB. A majority has 16 GB.
This low storage space is not necessarily a handicap. Android for example, it is possible to offload applications and transfer them to a memory card.
If you plan to use your smartphone as a media player, orient yourself a phone with a large internal capacity or enjoying a housing (or “slot”) to host a Flash card (see our chapter 7 ) type of external microSD (Secure Digital) or SDHC (High Capacity) up to 128 GB.
You can also save your documents in the cloud, that is to say in a hard disk “virtual” made available by a service like Dropbox, Google Drive, The Box … The main operating systems smartphones also offer this kind of service: onedrive Microsoft for Windows Phone and Apple iCloud for iOS …
5 | Wi-Fi, GPS, Bluetooth, DLNA, HDMI
The mobile phone standards
The USB OTG
The microUSB and USB 3
The Micro HDMI
The infrared (IR) port
Faster and faster The flow rates of mobile and wireless access networks are increasing. Who would have thought a few years ago that one can surf the web up to 150 Mbit / s with 4G-LTE or enjoy free Wi-Fi 3 times faster than before? The smartphones feature a full range: in addition to 3G, they enjoy wireless connections Bluetooth and Wi-Fi type.
This comprehensive connectivity foreshadows new interactions including the Internet of Things.
The mobile phone standards
Who remembers the BiBop, this phone France Telecom which required being near a terminal to connect to a wireless network? In fifteen years, mobile telephony has moved from 2G with GSM and 2.5G with GPRS (General Packet Radio System) 3G with UMTS (Universal Mobile Telecommunications System).
Today, mobile networks offer 4G-LTE (Long Term Evolution-Advanced) to achieve a theoretical rate exceeding 100 Mbit / s. These higher rates make it easier to use streaming and videoconferencing in particular. And it’s not over, “real 4G”, called LTE Advanced offers a downlink speed of up to 1 Gbit / s. But modems and compatible smartphones are still rare.
Five 4G-LTE terminals classes have been defined for the frequency band 1.4 to 20 MHz, left available to each operator. These devices must allow flow rates from 10 Mbit / s (category 1) to 300 Mbit / s (category 5).
Note that Dual Carrier technology (or HSPA +) to have higher data rates on 3G (rates up to 42 Mbit the / s).
This wireless connection is (almost) as qualities! It gives you access to broadband without puncturing your data plan (data). Your smartphone connects through an access point, which may be the box of your Internet service provider, or access point outside of your home. Via the authentication protocol EAP-SIM SIM card, your phone can also connect to free Wi-Fi hotspots other individuals who have a subscription with the same ISP as you.
There are five known standards 802.11a / b / g / n / ac. The maximum flow rates are the splits: between 54 Mbit / s and 1300 Mbit / s. But this is only theoretical speeds, because the performance of this connection depends on its environment: distance between the smartphone and the terminal, presence of concrete walls …
Attention all mobiles are not compatible with the latest standard as they are with 4G-LTE.
Another advantage of this connection, Wi-Fi Direct technology allows two compatible phones to exchange data with each other without an intermediary access point.
All smartphones integrate this chip. Associated with an application like Google Maps, Nokia Here (which is also coupled with the standalone shows Samsung Gear S) or Waze, it allows to find his way free and quickly.
Some of these applications have a small “plus” very convenient as those of Nokia and Waze that allow the downloading of unwanted cards. This possibility avoids the use of its mobile data subscription for guidance.
This connection is convenient to connect a wireless headset or speakers to his smartphone. Some models offer connecting the mobile phone to a car radio.
Bluetooth lets you connect your smartphone to a headset like the Jabra Extreme 2 Bluetooth lets you connect your smartphone to a headset like the Jabra Extreme 2
As for Wi-Fi, there are several versions. Most laptops come with version 4.0 technology associated with APT-X (Audio Processing Technology) operated in the 90s in movie theaters, but now facilitates the diffusion of wireless speakers or headphones.
Bluetooth headsets – the top selling:
Plantronics K100 – Bluetooth hands-free car kit K100 – Bluetooth hands-free car kit € 49.90
SuperTooth Buddy – Bluetooth hands-free car kit (black) Buddy – Bluetooth hands-free car kit (black) € 44.90
Jabra Clipper – Pieton Kit Bluetooth (blue) Clipper – Pieton Kit Bluetooth (blue) € 29.90
Plantronics M70 Bluetooth Headset M70 Bluetooth Headset € 29.90
Some high-end models like the Samsung Galaxy Note 4 benefit from 4.1. This version will strengthen interaction with the “Internet of Things”. An apparatus may be both client and server. For example, a heart rate monitor will be connected continuously connected to a watch, while connecting the latter simultaneously to a smartphone.
The USB OTG
The USB-on-the-go can connect a compatible smartphone with storage devices. Some applications are necessary in this case, such as USB Host Controller. For its part, Sony offers a USB OTG for exchanging data between a computer and a mobile terminal such as the Xperia range.
The microUSB and USB 3.0
The microUSB is widespread. USB 3.0 is much less, even on high-end models. However, the transfer rate is much higher than USB 2.0.
The Digital Living Network Alliance is an alliance of more than 200 manufacturers. With UPNP protocol, all DLNA certified devices (Blu-ray drive, external hard drive, digital camera, mobile phone) can communicate, remotely access files (such as photos or videos) and share .
The Micro HDMI
HDMI cables convey not only the image but also the digital sound. Some smartphones have a micro HDMI 1.4 output for viewing on a flat-screen-compatible 3D content.
Smart MHL (Mobile High-Definition Link) can carry the image (Full HD), audio (8-channel PCM), orders (via CEC compatibility) while charging the battery of the mobile. This makes it possible to display on a TV content stored on a smartphone with a microUSB port. LG and Samsung sell both MHL compatible phones and televisions. The latest version, 3.0 MHL, supports the dissemination of an image UHD / 4K.
The infrared (IR) port
It transforms the smartphone into a universal remote control and any audio-video equipment.
6 | Photo, Video, Music
The audio and video players
The smartphones are versatile mobile devices, they will allow you mostly take pictures and videos, but also listen to music, radio …
The megapixel is good, the options is better! In recent years, mobile phones and digital camera manufacturers on the ads multiply megapixel sensor. Although this element is important, it is not the only influence on the end result: the image. The quality of the electronics and the size of said sensor are also essential. The minimum is 3 million pixels (3 MP). Some models appear more like 20 MP Sony Mobile Xperia Z1. But the resolution is not the only important criterion. The performance of electronic components, the image processing and optical play a major role.
Some options are also proving very useful. This is the case of automatic LED flash, burst mode, the stabilizer to compensate for blur caused by hand movements and autofocus. A second front sensor is useful for video conferencing.
Apple then integrated by other manufacturers, HDR technology (High Dynamic Range) is a digital process for improving the quality of an image taken in difficult lighting conditions. When the picture is taken, several levels of exposure are used before being merged to produce a final result with a greater distinction between shadows and light. The result is a consequence of the effects of a weakening against the light or overexposure.
The audio and video players
Most phones support many video formats including H.263, H.264, MPEG4, Windows Media Video. Regarding the audio, the main formats (MP3, AAC +, eAAC +, FLAC, Windows Media Audio …) are read by most models. This is not the case with the ALAC (Apple Lossless) …
More brands also highlight the capabilities of their smartphones to broadcast the HD audio whose quality is superior to that of CD (16-bit / 44.1 kHz). But the online offer is rare. The most famous site is Qobuz which offers streaming and downloading tracks paying up to 24 bits at 192 kHz. To really enjoy, you should have a “right” helmet and use a specific application like Poweramp, Android, and iOS Flac Player.
The compact headphones – the top selling:
Sennheiser Headphones Bluetooth MM 400 X APTX Headphones Bluetooth MM 400 X APTX € 159.00
AKG K451 Headphones Nomadic Nomadic Headphones K451 € 59.99
Bose QuietComfort 25 Headphones mobile Apple Black QuietComfort 25 headphones mobile Apple Black € 299.00
AKG Headphones Bluetooth Y45 Black BT Y45 BT Bluetooth Headphones Black € 89.00
Unlike mobile phones, smartphones can be customized. In addition to pre-installed applications, you can add more to your needs and desires. Just download the software on clean small platform to the operating system of your model: App Store for iPhone (more than one million applications) Play store for phones running the Google OS, Windows Phone Store for devices running with the Microsoft OS …
In summer 2014, BlackBerry has signed a partnership with Amazon. This agreement allows it to add to its online store the 240,000 applications that claims the e-commerce site.
The days when we played Snake or PacMan on the small black and white screen of the phone belongs to prehistoric times! Now you can play games that have nothing to envy to those available on handheld consoles. But to enjoy it, that is to say without being penalized particularly by micro-graphics slowdowns or not detailed enough, it is necessary to choose a smartphone with a powerful processor and integrated graphics (iGPU ) effective to properly display 3D.
Manufacturers are also trying to attract and retain some target buyers by offering exclusive services. This is the case of Samsung, which launched Music Hub Store. Purchased music is stored in the cloud and automatically appears on all devices. But the “services” the best known are the iTunes platform Apple and Walkman application presents on Sony devices (only downside, integration too often “push” for some Music Unlimited streaming service brand …).
7 | Accessories smartphones
The docking station (dock) and wireless speakers
The screen protectors and cockles
Taking advantage of the success of smartphones, many brands offer more or less useful accessories. Some are very practical as holsters, headsets, memory cards, chargers and media. If you change the model, make sure your accessories are compatible …
A microSDHC memory card, like the Verbatim Micro SDHC 32GB (Class 10) can store their media files. A memory card microSDHC, such as Verbatim Micro SDHC 32GB (Class 10) can store their media files.
Smartphones are versatile devices, everyone uses them at will. Music lovers and / or videos must be attentive to the internal storage, expandable or not via a Flash type memory card.
Many devices come with a 4GB memory card. But it will be sufficient if your media needs demanded more space. Do not hesitate to buy another because prices are affordable. Thus, a Micro-SD Verbatim 16GB Micro SDHC card (Class 10) costs around € 14. Multimedia fans will opt for a memory card Sandisk Extreme Mobile microSDXC 64GB SD adapter sold with less than € 100. These cards offer the fastest speeds time: up to 80MB / s read and up to 50MB / s write to pictures of superior quality, Full HD + videos and performance applications.
Check if the house of the memory card is easy to access. Sometimes you remove the shell and lift the battery to access it, while others offer the smartphones on the side, behind a cover.
The docking station (dock) and wireless speakers
Smartphone LG G3 and its base induction For its LG G3, the brand offers an induction support.
When you need to ask your smartphone, favor the use of a cradle, or a dock. Indeed, in addition to maintaining the well by marrying its forms, the docking station has a plurality of functions that will quickly indispensable. For example, be mentioned clock functions, synchronization or simply reloading.
Some docking stations include speakers for listening to music from your library with a sound definition more precise than on your mobile device. To make your choice between the different speakers, see the guide dedicated to pregnant mp3 / mp4.
A compatible cable to your smartphone is integrated directly into the docking station to connect your smartphone to your computer very quickly, without tangling with wires lying around and are unsightly.
This synchronization is accompanied by charging your smartphone with a Lightning connector for Apple smartphones.
On the supply of wireless speakers, it has grown considerably in recent years, this being due in particular to the growing interest for mobile terminals and for streaming. These lightweight speakers (less than 1 kilo) in bright colors have a more or less rich connection: microUSB, 3.5 mm mini jack, headphone or Ethernet. The days of cables being over, they can be connected to a smartphone via Bluetooth (Bluetooth possibly aptX Low Latency) or AirPlay for perfect compatibility with Apple devices. NFC synchronization is proposed by Denon.
With the integration of GPS chips in all smartphones, the use of a phone in car became common, but is not without risk to you or your device. Without appropriate support, your smartphone may not be properly maintained or readily available, then you can put in danger. If you usually use your phone while driving, orient yourself a car holder, or handsfree kit.
Whatever your smartphone, it is held in place in your car with this universal kit Kenu! Whatever your smartphone, it is held in place in your car with this universal support Kenu!
More carriers exist, binding in different ways and for various uses. GPS support will be fixed at the windscreen or above the unit, enabling easy implementation and an optimal position for the driver assistance.
Other supports are used to simply hold the smartphone so you need to have to constantly reach. It is often coupled with a hands-free kit. The universal support solution is easy to install since it is offered with rotating clamps that are compatible with all the air vents (horizontal, vertical, diagonal and circular).
Finally, there are the bases for wireless charging (Nokia Qi technology): no more cable, the contact between the device and the smartphone is enough!
Who never had broken his ears by a metal too? Small headphones supplied with mobile phones often deliver poor sound quality. To enjoy your favorite songs, it is advisable to invest in a “real” headphones and wireless.
There are two main groups: conventional headphones (including some active noise reduction technology to remove unwanted background noise) and ITE, which are very light (about 20 grams). Also called “in-ear”, they fit directly into your ear canal. They are compact and very isolated.
Also called “Smartwatch”, they are the perfect complement to a smartphone. Some, like the Moto 360, look like a “real” watch with a dial and hands. But they are also equipped with a small touch screen to easily check your emails, SMS or new messages on Twitter, but also sports performance. Operating between other sub Android Wear, they fit into a new ecosystem with a promising future: the Internet of Things.
The screen protectors and cockles
Falls, scratches, splashes … smartphones can be damaged by our blunders. To avoid seeing the scratched or broken screen, it is best to invest in effective protection as a tempered glass protective film (Finished the galley to ask the plastic film without bubbles …) or the shockproof shells like Otterbox, Lifeproof …