Результаты поиска

Judging by the description, the "Secure Check Fail: Modem" error is most often related to corrupted modem firmware or a lack of communication between the AP and the modem. Since the problem appeared after soldering and reassembly, I would first carefully inspect the modem's power lines, the...

Water damage can be really tricky with network issues. If the SIM is detected but there's no signal, the antenna or network IC may have been affected after the phone got wet. You could also try cleaning the SIM tray and checking if another SIM works before opening the device. Hope you get it...