I updated my Zenfone 5 A501CG from Version TW-2.22.40.540 to Version TW_3.24.40.87. Now my mobile data connection (AT&T) does not work. In an attempt to resolve this issue I have tried the following:
Factory data reset
Deleted AT&T APN settings and added them back
Safe Mode
Wipe Cache Partition
Moved SIM card to slot 2
After the above failed, I completed the downgrade back to KitKat Version TW_2.21.40.44. During the initial setup my mobile data connection started to work. I proceeded to upgrade to Version TW-2.22.40.540 (data still working) before finally updating again to Version TW_3.24.40.87 which has broken my data connection again.
What can I do to fix this?
Factory data reset
Deleted AT&T APN settings and added them back
Safe Mode
Wipe Cache Partition
Moved SIM card to slot 2
After the above failed, I completed the downgrade back to KitKat Version TW_2.21.40.44. During the initial setup my mobile data connection started to work. I proceeded to upgrade to Version TW-2.22.40.540 (data still working) before finally updating again to Version TW_3.24.40.87 which has broken my data connection again.
What can I do to fix this?
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