unable to Activate
your phone could not be activated because the activation server is temporarily unavailable
i tried connecting it to the pc but it restarts i upgraded the iOS and no luck
what is the problem with it
Earlier iPhone models
Question marked as
If your iPhone can't be activated or an alert says the activation server is unavailable or the SIM card is unsupported, read this document --> If you can't activate your iPhone or iPad (Wi-Fi + Cellular) - Apple Support