Can IPHONE4 upgrade IOS5?

Yes, but now ios5 is only a beta version. A developer account is required to upgrade, and there is now a tutorial on how to upgrade without a developer account on the web as follows:

Although this upgrade method is easy, but currently iOS 5 only provides a beta version, may contain bugs and other risks, if you have concerns about children's shoes, please wait for the official version to be announced, and please bear any problems caused by this upgrade tutorial, it is best to back up the current version of shsh in case of emergency.

2. Upgrade through iTunes, as before, click "Upgrade";

3. Wait for the upgrade to be completed, and a new screen will appear.

Activate iOS 5

1. Tap the home button of the device three times to turn on the voice over function;

2. Triple click the home button of the device again, and you can see the "Emergency Call" interface appear;

3. Click the "Emergency Call" button, and after the screen changes, use three fingers to swipe the screen from top to bottom;

4. At this time, if the operation is successful, the interface of the notification center will appear;

5. Click the "Weather" button, and the weather app will load;

6. At this time, click the Home button to exit, and the iOS 5 upgrade process will be carried out automatically.

But I don't recommend the landlord to update ios5,Upgrade to ios5 in the above way, you can't play **,It can only be used as itouch4。 And the beta version doesn't include all the features as Old Joe said. iOS5 will be tested in the second and third versions in the future.

These features will be added over time. Wait, owner. The original version will be released in the fall.

I really can't wait**There are developer accounts for sale. About 30 yuan, the seller will give you a one-step solution.

It's too early to draw conclusions

of course, but now, as long as the beta version of ISO5 is unstable, there are some bugs, and perfectionism is forgotten, and it is okay to play.

It can be drip but it is not very stable, so it is not recommended.

It took me more than four hours to upgrade my iPhone and iPad. The experience that upgrading iOS5 has given me is: First, the whole process of iPhone connection to computer recovery must not unplug the connection until the end! Second, the prompt that appears in the taskbar must be left alone!

In addition, you need to keep the following points in mind: First, as soon as you think that the scroll bar above is running for too long or does not move or has an error**, you will quit iTunes and then restart iTunes. But don't unplug the connection!

Second, no matter what the dialog box is, such as "restore", "OK", etc., all calmly. Third, note that it can only succeed if it is restored with a backup. Fourth, pay attention to whether the iPhone screen appears "progress bar", and if it appears, it will sign that it has entered the normal upgrade.

Fifth, when the scroll bar above appears "Recovery Software (Application)" after the recovery is successful, you have to open the iPhone and do it first according to the prompts inside the iPhone, so that it can be restored smoothly, otherwise it will scroll endlessly.

I calculated the upgrade, it will take more than an hour or so, it's too troublesome, it's too infuriating, what the hell is Apple?!

Don't pay attention to anything, just go up.

iPhone5It can be used with 4G network,What is said here is limited to Unicom4G,Mobile 4G is still a customized model for the time being,In addition, not all iPhone5 can be used with Unicom4G,But iPhone5National Bank A1429 and Unicom contract version are definitely possible。

iPhone5 can use the 4G network, the specific method steps are as follows:

Note: 1. The telecom version of iPhone5 cannot support Unicom 4G through the software, and iPhone5S with model A1528 does not need to try.

2. If you want to go to 4G, the number needs to be activated for 4G service, and it can be used normally in the 4G network coverage environment.

iPhone5Can you use 4G, through the above method tutorial, you can make your iPhone5 use China Unicom 4G network, users who want to experience 4G speed can refer to this tutorial to operate. Hope it helps.

1.New notification system, more beautiful and user-friendly.

2.Added new feature iMessage, IM software 3 among iOS usersAdd newsstand and reminder function (similar to todo, easier to use)4

Optimized programs such as Camera, Photography, Safari, Mail, Calendar, Game Center, etc., and added functions such as volume keys for photography.

5.Wireless sync, you can back up your data to iCloud or sync it wirelessly on your computer. In addition, iCloud can realize the seamless synchronization of computers and iOS devices to achieve data unification.

For example, if you add a calendar item to your iPad, the computer and other iOS devices that sync it with will automatically get the calendar item, similar to the current Mobile Me.

6.Some other improvements and optimizations.

The main thing is iCloud, and its hundreds of detailed updates. iCloud is equivalent to MobileMe, only free within the 5G range. This is the greatest benefit.

1. iPhone4 system can be upgraded to the maximum. After that, Apple terminated the iPhone 4 system upgrade.

The native one is the most suitable for this phone, and it has not been upgraded by the phone until now.