Iphone 3G has been jailbreaked and now gets very poor signal?

Mark

New member
Hi, I recently purchased an Iphone 3g from ebay. It has been jailbreaked and now the service/signal doesnt work alot of the time? If i restore it on itunes will this unjailbreak it and fix the problem? Im not worried about it being jailbreaked just want a phone that works!!! Please help?!?!?!?!
 
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