DeviceDecoded
Three · Carrier Unlock

Unlock Not Known from Three

Permanently remove the Three network lock from your Not Known 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 Not Known × Three unlock

Three locks devices to its network when sold on contract or financed. Unlocking your Not Known is straightforward once your account meets Three'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 Not Known's IMEI directly, and once approved, the device is permanently whitelisted. The unlock survives factory resets, OS updates, and SIM swaps.

Three country coverage

Three operates in 9 countries. Your Not Known unlock works regardless of which country it was originally sold in.

  • 🇦🇺 Australia
  • 🇦🇹 Austria
  • 🇮🇪 Ireland
  • 🇬🇧 UK

Popular Not Known models on Three

FAQ — Not Known on Three

Can Three block this unlock?
No. Once your Not Known's IMEI is whitelisted on the manufacturer's database, Three cannot reverse it.
Will my Not Known 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 Three account credentials?
No. We unlock by IMEI alone. You don't need to provide your Three username, PIN, or account number.
What if my Not Known is still on a Three 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.

Other brands on Three

Ready to free your Not Known from Three?

Enter your IMEI to start. Money-back if we can't deliver.

Start unlock →