activation server is temporarily unavailable. how to fix it? i reset my phone. but it is not activated because activation server is temporarily unavailable
That's almost always because:
a) There is no SIM card in the phone.
Insert a SIM card. You can not activate without one.
b) The phone was hacked to unlock it.
Contact the carrier the phone is locked to and see if you can get it legitimately unlocked.
Retrieving data ...