How To Use Secret Codes On Oneplus Nord Ce 2 - 5g [upd]

When using secret codes on the OnePlus Nord CE 2 5G, keep the following tips and precautions in mind:

Note: Some codes require OxygenOS 11 or 12 (based on Android 11/12). OnePlus Nord CE 2 5G ships with OxygenOS 11 and can be updated to OxygenOS 12/13. All codes listed below have been tested on OxygenOS 12.1. How to Use Secret Codes on OnePlus Nord CE 2 5G

| Code | Function | What You’ll See | |------|----------|------------------| | *#*#4636#*#* | Phone information / Battery / Usage stats | Testing menu: Signal strength, network type, battery health, Wi-Fi info. | | *#*#3646633#*#* | Engineer Mode (MediaTek) | Detailed hardware testing: Camera, audio, sensors, Bluetooth, Wi-Fi, etc. | | *#*#225#*#* | Calendar & Events | Shows calendar-related info stored on device. | | *#*#426#*#* | Google Play Services | FCM (Firebase Cloud Messaging) diagnostics – check connection to Google servers. | | *#*#232338#*#* | Wi-Fi MAC address | Displays Wi-Fi MAC address without needing Settings. | | *#*#1234#*#* | Firmware version | Shows PDA, CSC, and other software build info. | | *#*#1111#*#* | FTA Software Version | Displays software version for FTA testing. | | *#*#2222#*#* | FTA Hardware Version | Shows hardware revision info. | | *#*#0*#*#* | LCD & Touch Test (OnePlus specific) | Screen test: Colors, touch sensitivity, backlight. | | *#*#7780#*#* | Factory data reset (use caution) | Resets phone to factory state – erases all data. | When using secret codes on the OnePlus Nord

| Code | Function | |------|----------| | *#*#4636#*#* | (Phone info, Battery, Usage statistics). The "Phone info" section lets you change preferred network type (e.g., force 4G only, 5G only, or LTE/WCDMA). | | *#*#86583#*#* | Toggle VoLTE carrier check. Disables carrier validation (useful for forcing VoLTE on unsupported carriers). | | *#*#869434#*#* | Toggle VoWiFi (WiFi Calling) carrier check. | | *#*#7262626#*#* | Enable/disable VoLTE debug mode (shows IMS registration status). | | **#3644633#** | Alternative MediaTek network engineering mode (may differ by firmware). | | *#*#232339#*#* | Wi-Fi connection test and throughput measurement. | | Code | Function | What You’ll See

Some codes can alter system settings or trigger factory resets. Do not run codes you don’t understand. Always double-check before pressing dial.