iPhone 13 'No Service' Fixed – Shocking Cause Revealed In this detailed iPhone 13 repair video, we troubleshoot one of the trickiest issues technicians face: the dreaded 'No Service' problem. At first, everything seemed normal - the phone was a 256 GB Chinese version iPhone 13 with a genuine battery, unknown replacement display, and a working baseband. The IMEI number showed up, which usually means the baseband chip is fine. But after inserting a SIM card, the phone still displayed No Service, with no ability to manually search for networks. This ruled out the antenna and system issues, pointing toward the motherboard. After removing the screen, we discovered it was a third-party assembly with poor quality. The real problem, however, was hidden deeper. Using professional testing equipment, we checked six different signal buses and multiple chips, confirming all power amplifiers were normal. This narrowed the fault to the lower motherboard and RF chip area. Upon closer inspection, the board had a dent directly over the RF chip. When we compared it to a good board, the difference was obvious. After fully separating the motherboard layers, reballed the baseband, WiFi, and code chips, and carefully transplanted them onto a new board, the iPhone 13 finally regained full signal - even 5G worked perfectly. The shocking discovery? A loose screw had somehow been stuck under the motherboard during a previous screen or battery replacement. This caused the dent that led to signal failure. It's one of the most bizarre faults we've ever encountered, and a strong reminder of how important careful repairs are. If you found this repair fascinating, don't forget to like, share, and comment your thoughts. Would you have guessed a single screw could cause 'No Service'? #iphonerepair #iphone13 #iphonetips #noservice #phonerepair - @phonetalksmoney