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Provides detailed information about your ColorOS version, Android version, kernel, and build number. (Engineer Mode):
Are you troubleshooting a (like battery drain or touch issues)? how to use secret codes on oppo a9 2020 upd
| Code | Hardware Tested | |------|-----------------| | *#*#0289#*#* | Audio—speaker and microphone playback test | | *#*#0842#*#* | Vibration motor and backlight | | *#*#0588#*#* | Proximity sensor (detects when your face is near the phone during calls) | | *#*#2664#*#* | Touchscreen test | | *#*#232338#*#* | Wi-Fi MAC address display | | *#*#1575#*#* | GPS functionality test | | *#*#232331#*#* | Bluetooth hardware test | | *#*#7262626#*#* | Field test mode (network and signal diagnostics) | | *#*#64663#*#* | Comprehensive hardware test: version, sensors, SIM, WLAN, Bluetooth, battery, OTG, radio, speakers | Engineer Mode is the most valuable hidden menu
: Displays the Specific Absorption Rate (SAR) to check the radiofrequency energy level emitted by the device. how to use secret codes on oppo a9 2020 upd
Engineer Mode is the most valuable hidden menu on any Oppo phone. It contains comprehensive hardware tests and diagnostics used by professionals to check components before and after repairs. It runs from a hidden app ( com.oppo.engineermode ) that ships on every Oppo device.