ZTE Blade A52 Secret Codes & Engineering Test Menu
These are the official service (secret) codes for the ZTE Blade A52, taken from the teardown reference. Technicians use them to check the IMEI, run the built-in hardware test and calibrate the cameras. Type each code in the phone dialer.
The codes
| Code | What it does |
|---|---|
| *#06# | Show the IMEI — compare it with the label, box and certificate. |
| *#*#983#*#* | Open the engineering dialer (a new keypad). |
| *983*673636# | Enable engineering instruction mode (enter this in the new dialer first). |
| *983*70# | Run the automatic hardware function test (touch, speaker, vibration, keys and more). |
| *#*#83788#*#* | Open the camera calibration menu (used after a camera or screen repair). |
💡 Enter *#*#983#*#* first to open the engineering dialer, then run *983*673636# to unlock engineering mode before *983*70#.
Check the software version
To confirm which firmware build is installed, open Settings > About phone > Build number. Match this against the latest ZTE Blade A52 firmware if you are diagnosing software faults or planning a reflash.
⬇️ Need the software? Download official ZTE Blade A52 stock firmware free on ROM Palace — direct links, no waiting queue.
Frequently asked questions
How do I check the IMEI on a ZTE Blade A52?
Dial *#06#. The IMEI on screen should match the one printed on the SIM-tray label, the retail box and the certificate.
How do I run the hardware test on a ZTE Blade A52?
Dial *#*#983#*#* to open the engineering keypad, enter *983*673636# to enable engineering mode, then dial *983*70# to start the automatic function test.
More ZTE Blade A52 guides
- ZTE Blade A52 Disassembly Guide: Full Teardown Step by Step
- ZTE Blade A52 Battery Replacement: Safe Step-by-Step Guide
- ZTE Blade A52 Screen Replacement: Display Module Guide
- ZTE Blade A52 Common Problems & Troubleshooting (Won’t Turn On, Charging, Signal)
- How to Flash ZTE Blade A52 Stock Firmware (SPD Upgrade Tool) — Fix Bootloop, Unbrick & FRP