I've recently changed my network provider. iTunes recognized the new number and amended it in iTunes. My original number is now available but iTunes won't accept it or allow me to change the number on the device. How can I resolve this?

Question

Hi Guys
I have just changed my telophone provider in the UK from )2. To transfer the number, which I wanted to retain, took 24 hours and I was given a new number by the new provider Virgin Mobile. To unblock my iPhone I had to connect it to iTunes, which recognised my device and changed the telephone number. 24 hours later, my old number returned but iTunes won't recognise the device or allow me to change the number back to the original. How do I reslove this?
Many thanks ;-)

Answer 1

If you only changed the name of your ID rather than creating a new ID, just go to Settins>iCloud and tap Delete Account then sign back in with the new name.  (Deleting the account from your phone does not delete it from iCloud.  Your data will be synced back to your phone when you sign back in.)
If you created a new ID, you'll have to go to Settings>iCloud on your phone and turn all data you are syncing with iCloud (contacts, calendars, etc.) to Off.  When prompted choose to keep the data on your iPhone.  (If you are syncing iWork documents with iCloud, also open your iWork apps and turn off iCloud syncing and choose to keep the documents on your phone.)  After everything is turned off, scroll to the bottom and tap Delete Account.  Next, set up a new iCloud account using your other ID, then turn syncing for your data (contacts, etc.) back to On.  When prompted, choose Merge.  This will upload the data to your new account.
You won't lose any photos in your camera roll or photo library.  If you have any photos in your photo stream that are over 30 days old that are not in your camera roll or saved on your computer, be sure to save these to the camera roll before deleting the account.  To do so, open the photo stream album on your iPhone in the thumbnail view, tap Edit, tap all the photos you need to save to select them, tap Share, then tap Save to Camera Roll.