, which opens the "Diagnostic Port" (Qualcomm HS-USB Diagnostics 901D) so the PC can communicate directly with the modem. Step 3: Using the Repair Tools
On the CPH1937, a corrupted IMEI typically appears as "IMEI: Unknown" in the dialer code *#06# or as "Null" in the engineering mode ( *#*#3646633#*#* ). oppo cph1937 imei repair
: This is usually done by enabling USB Debugging in Developer Options and using a dialer code (like *#801# or *#9434# ) to open the diagnostic port. , which opens the "Diagnostic Port" (Qualcomm HS-USB