I have a iPhone 4, which is IOS 4.3.3. Now i need to upgrade it to the latest OS version, WITHOUT deleting any data. I have not tried to update my phone contacts in the last few years fearing it would delete the data. Can someone help me out?
IOS – iPhone upgrade without deleting data
iosiphoneupgrade
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Best Answer
Okay, let me walk you through it step-by-step. The first thing we'll need to do is sync. Then we will backup, and then put the new OS on.
Syncing
Backing Up
Upgrading iOS