My Iphone 3G suddenly stopped giving signal. It works on all other apps. Tried registering new sim card. Still not working. Phone is jailbroken and was working OK. Any help appreciated.
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Hi there randrent,
Did you try resetting the network settings? (settings - general - reset - reset network settings)
If that doesn't fix it, try restoring the phone via itunes.
Also, in what city/area are you in? perhaps you lost signal due to a network outage or maintenance,
let us know