it does not happen always but the antenna could have gone out of place, if you feel comfortable opening electronics this phone is not hard at all, go check a tear down video and look for the antenna cable, and make sure both ends are in place
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if the phone does not have a cable then it has to be a contact type antenna
it does not happen always but the antenna could have gone out of place, if you feel comfortable opening electronics this phone is not hard at all, go check a tear down video and look for the antenna cable, and make sure both ends are in place