Will updating to iOS 7 clear my data?

If I update to iOS 7 on my iPhone 5 version 6.1.4, will updating clear out my apps, photos, data?
Also, will my phone number stay on the iPhone 5? As in that it won't clear out and have to head back to the store to fix it?

No, It won't unless you don't have enough space

You'll be fine as long as you back up. However, please be aware that your device will get deactivated if you try to install iOS 7 without registering your device's UDID with a site like UDID.in. It's $5, and they literally registered my 4S instantly.

  • Will updating my iPhone apps affect my phone speed as how updating the Operating System (OS) will? Currently I'm using the iPhone 5s on iOS 8.3 I know if I were to update my phone to the latest OS I may notice some slowdown on my phone's performance, since it may not have the "muscle" to handle certain functions. Many apps now are optimised for iOS 9 and/or the 6th generation phones. Will my 5s' speed performance slow down if I update my apps? Will the app's performance slow down?
  • Will updating ios 7 on my iphone costs charges on my bill using cellular data? I wanted to update ios 7 on my iphone 4s using the cellular data, will it costs some extra charges on my bill afterwards? But i do have hotspotshield VPN elite, does it helpful?
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