I recently replaced an iPad glass. Overall, it went pretty smoothly. However, now the iPad has trouble connecting to the AT&T 3G service. WiFi works perfectly, but 3G service always shows a very weak signal, and then says it is unable to connect. I'm guessing I must've somehow damaged something affecting the 3G antenna, which is separate from the WiFi antenna, but I can't see what is wrong.

Any thoughts or suggestions?

Rick