3G 16GB Untouched. original phone. never had a unlock or jail break.

wont keep signal after initial activation. gets a full signal and activates then goes to a no signal stage after activation. 3.1 firmware. also did it on the previous 2.2FW

tryed turning off 3G. no help.

works good after restore and it gets signal to activate then after activation it looses signal. has done this 3 times on restore.

any ideas?