To activate these features, you must enter the codes exactly as written into the . Open the Phone app. Tap the Keypad icon.

Go to → CIT (Hardware test) will launch.

Displays detailed information about your Phone, Wi-Fi connectivity, and Usage Statistics. In the "Phone Information" sub-menu, you can force the phone to lock onto 5G networks exclusively by changing the preferred network type to "NR Only."

While these codes are incredibly helpful, they bypass standard user interface safeguards. Keep the following precautions in mind:

If your network constantly drops to 4G, look for the Set Preferred Network Type dropdown menu. Changing this to NR Only forces your phone to stay locked onto 5G networks, provided coverage is available.

If you want, I can generate a short printable one-page cheat sheet of verified Xiaomi 11T Pro codes only (I will assume common MIUI codes and exclude any reset/unlock codes).

System updates like shifting from MIUI to HyperOS can disable old codes or add new ones.

Would you like a separate list of (if you’ve updated), or help with a specific test (e.g., battery, proximity sensor)?

Instantly displays your device's unique IMEI numbers and serial number (critical for blacklists or insurance). *#*#225#*#* Shows current calendar events and storage details. FCM Diagnostics *#*#426#*#*