No signal after replacing battery, battery drain with SIM
I have an 8gb A1203 and just replaced the battery. I get the "no signal" message after booting up. It will stay like that forever. If I turn airplane mode on then back off, it changes to "searching...." and stays like that till the battery drains and the iPhone shuts itself off. With a fully charged battery, this happens in less than 15 minutes. I have verified that the SIM is good in another phone. The battery seems to discharge normally when in airplane mode or the SIM is out of the phone. I have tried resetting the network settings several times and verified that the antenna connections are seated properly. I don't know what else to try. Please tell me I have not converted my iPhone into an iPod touch!!!!
Is this a good question?