3G not working (SIM detected, no signal)
Hi, I bought a used iPad but the previous owner said the 3G module isn't working. So I thought: I'll do a hardware reset and then it will work.
But no, after inserting a SIM-card, the iPad is searching for the 3G network but with no result. So it's no hardware problem (I think).
What could be the problem and how can it be solved?