Enter *#*#4636#*#* → “Phone Information” → “Set Preferred Network Type”. Change from “NR/LTE/TDSCDMA/GSM” to “LTE only” (to disable 5G and test stability).
| Code | Function | Works? |
|------|----------|--------|
| *#*#6485#*#* | Battery health status (charge cycles, voltage, temperature). | ✅ Yes – Very useful for checking HyperCharge degradation. |
| *#*#4636#*#* | Standard Android battery/usage statistics (also shows phone info). | ✅ Yes – Opens “Testing” menu. Tap “Battery information”. |
These reset or wipe data:
| Code | Effect |
|------|--------|
| *#*#7780#*#* | Factory reset (keeps media) |
| *2767*3855# | Full factory reset (wipes everything — use never without backup) |
✅ Back up your data before experimenting with unknown codes. how to use secret codes on xiaomi 11t pro work
Enter *#*#0588#*#*. Wave your hand over the top bezel. The screen should flash “Near” / “Far”. If not, your sensor needs calibration (requires Factory Mode – not recommended for casual users).
The Xiaomi 11T Pro runs on MIUI (Xiaomi’s Android skin), which contains a hidden layer of diagnostic and testing tools known as "Secret Codes" or "USSD codes." These codes allow you to access specific hardware tests, service menus, and hidden settings that are not visible in the standard settings menu. ✅ Back up your data before experimenting with
⚠️ Important Warning: Some of these codes access critical system settings (like the "TalkBack" menu or EEPROM settings). Do not change settings you do not understand, as this could affect your phone’s performance or functionality. Use them at your own risk.
| Code | Function | Works? |
|------|----------|--------|
| *#*#34971539#*#* | Camera firmware details (sensor model, lens calibration). | ✅ Yes – Shows Sony IMX686 or Samsung HM2 info. |
| *#*#0588#*#* | Proximity sensor test (wave hand over top bezel). | ✅ Yes – Great for call screen-off issues. |
| *#*#0842#*#* | Vibration motor test (buzzes continuously). | ✅ Yes – Tap screen to stop. | Enter *#*#0588#*#*