Unlock Teesso from A1
Permanently remove the A1 network lock from your Teesso using its IMEI. Use any SIM, anywhere — including international carriers when you travel.
Price
$19.99
Delivery
1-5 business days
Method
Official IMEI
Permanent factory whitelist. No software.
About this Teesso × A1 unlock
A1 locks devices to its network when sold on contract or financed. Unlocking your Teesso is straightforward once your account meets A1's eligibility criteria — typically the device must be paid off and not reported lost or stolen.
DeviceDecoded uses the manufacturer's official unlock channel. We submit your Teesso's IMEI directly, and once approved, the device is permanently whitelisted. The unlock survives factory resets, OS updates, and SIM swaps.
A1 country coverage
A1 operates in 1 country. Your Teesso unlock works regardless of which country it was originally sold in.
- 🇦🇹 Austria
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FAQ — Teesso on A1
- Can A1 block this unlock?
- No. Once your Teesso's IMEI is whitelisted on the manufacturer's database, A1 cannot reverse it.
- Will my Teesso stay unlocked after a factory reset?
- Yes. The unlock is permanent at the factory level — it persists through factory resets, OS updates, and SIM changes.
- Do I need my A1 account credentials?
- No. We unlock by IMEI alone. You don't need to provide your A1 username, PIN, or account number.
- What if my Teesso is still on a A1 payment plan?
- It depends on the device's status. Start with the eligibility check at our unlock checkout — that page explains how the two-stage payment works before you commit.
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Ready to free your Teesso from A1?
Enter your IMEI to start. Money-back if we can't deliver.