DeviceDecoded
ATT · Carrier Unlock

Unlock H2O from ATT

Permanently remove the ATT network lock from your H2O 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.

Trusted by thousands · Money-back guarantee
"We had 12 ex-company iPhones from a department closure — all locked to a previous employee's Apple ID. IT department had no record of the credentials. DeviceDecoded handled all 12..."
Marcus T. ·Birmingham ·iPhone 11 Pro (x12 units)
"My mum passed away last year and left me her iPhone 12. I couldn't get past the iCloud screen and Apple said without the credentials there was nothing they could do. DeviceDecoded..."
Sarah M. ·Edinburgh ·iPhone 12 Mini
"Factory reset my old iPhone before giving it to my daughter and somehow lost access to the Apple ID I'd used for years. Apple Support couldn't help without the original email addre..."
Priya D. ·London ·iPhone 13

About this H2O × ATT unlock

ATT locks devices to its network when sold on contract or financed. Unlocking your H2O is straightforward once your account meets ATT'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 H2O's IMEI directly, and once approved, the device is permanently whitelisted. The unlock survives factory resets, OS updates, and SIM swaps.

ATT country coverage

ATT operates in 2 countries. Your H2O unlock works regardless of which country it was originally sold in.

  • 🇲🇽 Mexico
  • 🇺🇸 USA

Popular H2O models on ATT

FAQ — H2O on ATT

Can ATT block this unlock?
No. Once your H2O's IMEI is whitelisted on the manufacturer's database, ATT cannot reverse it.
Will my H2O 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 ATT account credentials?
No. We unlock by IMEI alone. You don't need to provide your ATT username, PIN, or account number.
What if my H2O is still on a ATT 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 H2O from ATT?

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

Start unlock →