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원문 게시자: tonyhamre ,

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Hi Eddie

from the issues you explain and a bent device then most certainly you have a broken connection  between the transceiver ic and the modem. if you have 2g,3g.4g the power amplifiers will not be the fault. if you have 2g,3g.4g   then the antenna switches will be good. the rf circuit is complex but most issues arise from the transceiver and modem. you can try what many others have tried and heat the board although i would use caution with any lipo battery and intensive heat as the polymer becomes more unstable with heat. the true solution would be to have the modem re-balled to ensure a good connection followed by replacing the transceiver if the re-ball  did not solve it

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