USSD Code

Samsung Network Settings Ussd Code

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USSD Code

Several USSD and secret codes can be used on Samsung phones to access network settings, perform network diagnostics, or resolve network issues:

  • *#*#4636#*#* – Opens the Android “Testing” menu, where you can access Phone Information, run a ping test, view network details, and toggle certain radio functionalities. However, this code may not work natively on all Samsung models, especially those running Samsung’s One UI. If it doesn’t work, you can try using apps like “Phone by Google” to access this menu.[2][3][4]
  • *#2263# – Opens the RF (Radio Frequency) Band Selection menu, allowing advanced manual selection of network bands. Useful for troubleshooting and forcing network mode changes.[5][6]
  • *#0011# – Brings up the Service Mode, showing real-time signal strength, carrier information, and network technology in use (2G/3G/4G). Ideal for diagnosing poor signal or other connectivity problems.[6]
  • *7465625*638*# – Customize MCC/MNC Network Lock.[5][7]
  • *7465625*782*# – Configure Network Lock NSP status.[5][7]
  • #7465625*77*# – Network Lock SP status.[5][7]
  • To reset network settings, Samsung phones do not have a specific USSD code, but you can go to Settings > General Management > Reset > Reset network settings.[1]

For issues with USSD codes not working (“Connection problem or invalid MMI code”), try adding a comma (,) after the code (e.g., *121#,) to force execution.[4]

References

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