Mobile Testing Center
Dialer codes, with their limits
Search by code, brand or test. Each code says how sure we are, and many do nothing on newer phones.
Read this first. A code that does nothing is normal. Makers remove or change these codes, and no code works on every model. We tested none of them on a device. Each card says how sure we are. If a code does not work, use the manual tests in our guides.
*#06#Show the IMEI number (two on a dual-SIM phone).
All phonesMaker documentedSafe: only shows information- What you should see
- A box with IMEI, and IMEI2 on dual-SIM phones. On some phones also the serial number or EID.
- Limits and warnings
- Compare it with the box, the invoice and Settings > About. If they differ, do not buy.
*#21#See whether calls, SMS or data are being forwarded to another number.
All phonesStandardSafe: only shows information- What you should see
- A message listing each service as forwarded or not forwarded.
- Limits and warnings
- Shows status only. Forwarding that is switched on in a used phone can send your calls to the old owner. Do not dial codes that start with ## or ** to change it; use Settings > Calls instead.
*#62#Show where calls go when the phone is off or has no signal.
All phonesStandardSafe: only shows information- What you should see
- A message with a forwarding number, or none.
- Limits and warnings
- Network dependent. Read-only.
*#67#Show where calls go when the phone is busy.
All phonesStandardSafe: only shows information- What you should see
- A message with a forwarding number, or none.
- Limits and warnings
- Network dependent. Read-only.