How To Use Secret Codes On Xiaomi 11t Pro Work -

Back up first: create a full backup of important data (photos, messages, app data).
Avoid codes that include words like “wipe”, “factory”, “format”, or explicit reset references unless you intend data loss.
Use informational and diagnostic codes first (IMEI, battery stats, sensors).
Perform hardware tests in a controlled environment (good lighting, stable surface).
If a code modifies firmware/partition or triggers reflash, stop and seek official documentation or service help.

Safe/info: *#06# (IMEI)
Diagnostic (MIUI common): ##6484##
General testing menu (may work): ##4636##
Screen test (device-dependent): ##0*##
Touch firmware: ##2663##
Avoid unless intended: codes containing “wipe”, “factory”, “format”, “unlock bootloader”