Joke Collection Website - Public benefit messages - Is there any content after the upgrade of Apple's mobile phone system?
Is there any content after the upgrade of Apple's mobile phone system?
The system upgrade will not change the files, applications, address books, photos and short messages in the mobile phone. But I suggest you back up important photos and other files.
Apple's method of upgrading the system:
Open Settings-General-Software Update on the device in turn and wait for the device to download the latest firmware upgrade.
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