TS2756 hotspot is not working on myiPad 3, hotspot tap is cellural data always appear that it is searching, and never stop. Vodafone and tradeline told me that there is no problem with carrier and Sw. Tethering data is never kept.

Question

Hotspot appear always to search and never stop
internet is not working without internet APN data
Tethering APN  never save the data
Vodafone carrier checked and mentioned that the no problem with the SIM
Tradeline checked and the IOS was latest 6.1, but asked to reinstall from scratch
Please advice

Answer 1

I have this _same_ issue, exactly.  Initial backup goes just fine, but incremental backups fail.  And like you, I replaced the internal drive.
The failures didn't start occuring long after the original drive was replaced--which was about 1 year ago.  The new drive was non-Apple and worked fine--and tests fine now as well when outside the TC.  But suddenly incremental backups started failing when the TC firmware and utility app were updated about 2-3 months ago.  I even swapped the internal non-Apple drive for another known-working non-Apple drive, and same results.
I strongly suspect Apple added something to the firmware to check if it's an Apple or non-Apple drive in the TC and, if the latter, maybe causes incremental backups to fail.  This is only speculation and, obviously, the initial backup still works, so any checksum like this would have to be only during the incremental backup process.
I'll be checking into this thred to see if others have the same issue, or if a solution is found.  Hopefully my hypothesis is just para-apple-noia and it's some small, easy-to-fix issue.
-Gizm0d0