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iphone 3g showing no signal bars but shows carrier name


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Dec 7, 2011
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hi guys

recently jailbroke iphone 3g on 4.2.1 ios and also installed ipad baseband using redsn0w
however after the unlocking process is done using ultrasn0w i dont get any signal bars on the phone but i can see the carrier name
ive tried o2,vodafone,orange simcards and still the same no signal bars but can see the carrier name,however when i put a tmobile sim card in
i get full bars of signal and the carrier name but cannot dial or send texts etc,ive uninstalled the ultrasn0w source and reinstalled and still the same,please help

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