Open your phone dialer and enter *#*#717717#*#* or *#*#13491#*#* .
The serves as a vital repair utility for Qualcomm smartphone users facing network issues. By properly managing the QCN files, you can repair null IMEIs and bring your device back to life. Tungtata QCN Tool.zip
The tool should detect your device in the Qualcomm Diagnostic Port. Restore QCN: Click on Restore QCN or Write QCN . Navigate to your downloaded compatible *.qcn file. Wait for the process to complete. Open your phone dialer and enter *#*#717717#*#* or