Chosen Solution

i just swapped my motherboard out into another att 4s and i CAN recieve and send calls, texts, get data, siri works fone, apps work fine, it says 4g but it still says “searching…” constantly, what did i do wrong?

Hold the home and power button for 10 seconds to reset the phone. This will solve the issue.

i have an iphone 4 that display no service after i unlocked it. previously it went off by itself and so i replaced the battery and after its on, it says no service. please what could be the problem thanks