Review iOS 5.1 update

Not only adding virtual camera key, Siri supports Japanese, iOS 5.1 update also adds a shortcut to open 3G mode as well as resolving the wave dropping error on iPhone 4S.

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IOS 5.1 update has just been released by Apple last Thursday, March 8.

Along with the launch of the new generation iPad and Apple TV, the event last weekend in the US is also the place for Apple to introduce and launch the official iOS 5.1 update for its mobile devices. Users of iPhone 4S, 4, 3GS, iPad 2 and iPad as well as iPod Touch gen 3 and gen 4 will be updated iOS to this latest version.

To update, users can use the OTA wireless update feature right on their device or via iTunes. However, for some users who have unlocked the " jailbreak " device, updating via OTA may result in errors when entering Software Update, the device cannot find the 5.1 update. Similarly, the same error may occur if using a beta version of iOS 5.1 for Developer.

Handling this problem, users can use iTunes on the computer. Preload an IPSW format installation file about 800 mb then press Shift + Update Firmware on iTunes to perform the upgrade. The upgrade will not delete the player's old data but the "pirated" software installed from the jailbreak will no longer be used. If careful, before updating 5.1 users can copy a data backup of the device.

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Siri Japanese on iOS 5.1 running iPhone 4S.

Compared to iOS 5.0.1, 5.1 update does not bring special improvement, in which the camera is the feature that receives the most changes. For users of iPhone 4S, 4, 3GS and iPod Touch gen 4, the lock screen of the device will be added a quick Camera key located right at the bottom of Slide to Unlock slider. Instead of double-clicking the Home key to call the camera key like iOS 5.0 and 5.0.1, users can now press the camera key and slide from bottom to top half of the screen to quickly access the shooting function and video recording on iOS.

Camera performance on iOS 5.1 updates is also improved and better than previous versions. Face detection function in the iPhone 4S Camera has supported the identification of all faces in the frame instead of just a prominent face like in the old firmware. The speed of recognition and presence in iOS 5.1 is better from 1 to 3 seconds compared to iOS 5.0.1 in the same frame. If you notice users will notice the light green frame of face recognition mode on the new iOS 5 version is rounded but not square as the previous version.

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IPad camera interface running iOS 5.1 is redesigned.

As for the iPad, the interface when taking photos and videos has changed, different from those on the iPod and iPhone, the camera / video capture key is left out of the regular and vertical toolbars instead of as horizontal. . The toolbar in camera mode is blurred and has transparency. A new feature on iOS 5.1 is the photo backup feature on iCloud, Photo Stream, which allows users to select photos to delete.

Although not informed by Apple and clearly stated in iOS 5.1 update, the phenomenon of dropping waves on iPhone 4S, cocoon sim Mobi . has been fixed and the 3G mode switch has also appeared like on iPhone 4 and 3GS. Mr. Nguyen Huu Cong, a technician of the iPhone store in Thai Ha street, Hanoi, said that, similar to the official iOS 5.1 Beta 3, iOS 5.1 firmware, iPhone 4S has a better stable wave. The faulty iPhone 4S has to search the network continuously, the virtual radio and cannot text, make outgoing calls after updating the software for the machine, there is no such phenomenon anymore.

Experiment with an international 16GB iPhone 4S from France. Previously, when using iOS 5.0.1 9A405 and 9A406, there was a continuous drop of wave after a few minutes, so waiting for 3 to 4 hours will cause sim error, after updating to iOS 5.1, This phenomenon has no longer encountered in 3 days of trial use in both 3G mode and 3G off. Baseband from 1.0.14 in version 5.0.1 9A406 has been upgraded to 2.0.10 in version 5.1

Another noteworthy point is that the iOS 5.1 update has improved the battery life for iPhone 4S. Turning off 3G networks and switching to 2G mode makes iPhone 4S able to operate comfortably from 1.5 to 2.5 days. If operating in 3G mode with high demand for Internet use, use 2 mail accounts with checking mode every 15 minutes, install Whatsapp, 4S running iOS 5.1 for operation time from 8 am until 11 pm with 90% battery. Compare with iPhone 4S running iOS 5.0.1 (9A406), battery in iOS 5.1 version increased by about 10%. 10 minutes of playing Uber Racer 3D games with external speakers to average, iPhone 4S consumes from 2% to 3% battery.

Besides noticeable improvements, iOS 5.1 update also adds Japanese language to Siri, Apple also promises from now until the end of the year will add some languages ​​(no Vietnamese). for voice control on 4S. Currently on iOS 5.1 on iPhone 3GS, 4 and iPad has been Tethered jailbroken (must be plugged into the computer and reactivated after every boot). While iPhone 4S and iPad 2 still have no unlocking method.