Ericsson: Secret Codes and Tricks for All Vintage Models — Complete Guide 2026

Ericsson and Sony Ericsson phones are among the most loved by vintage phone collectors. From the first GSM models like the T28 and T29, up to the more advanced T39, R320 and the T68 series, every device hides a series of secret codes and tricks to access service menus, hardware tests, system information and advanced functions.

In this complete guide you will find all Ericsson secret codes divided by era and model, with detailed explanations on how to use them, what they do and what risks they involve.

1. Universal Ericsson secret codes

2. Secret codes for Ericsson T28, T29, T39

3. Secret codes for Ericsson R320, R380

4. Secret codes for Sony Ericsson T68i, T610, K750i

5. How to correctly format an Ericsson

Method 1 — Soft reset

Go to Menu > Settings > Reset settings. Confirm and wait for the restart.

Method 2 — Hard reset with codes

Type *#7370# (some models only). Enter the security code (default: 12345). Confirm and wait.

Method 3 — Hard reset with physical keys

1. Turn off the phone.
2. Hold: Volume Up + Power (or Volume Down + Power depending on the model).
3. Release when the Ericsson logo appears.
4. Select Wipe data/factory reset.
5. Confirm with the Power key.

6. Common Ericsson problems and solutions

"The phone won't turn on"

Cause: dead battery. Solution: charge for 30 minutes, then try again.

"The phone is stuck on the Ericsson logo"

Cause: corrupted firmware. Solution: hard reset with physical keys.

7. Ericsson collector value 2026

Buy Ericsson on Infosate

Looking for an original, verified and working Ericsson? On Infosate you'll find a selection of vintage Ericsson phones — T28, T29, T39, R320, T68i and many more, all checked before shipping.

👉 View the Ericsson collection on Infosate

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