DeviceDecoded
ATT · Carrier Unlock

Unlock DA678 from ATT

Permanently remove the ATT network lock from your DA678 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
"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
"Bought an iPhone 14 Pro on eBay for a great price. When it arrived, it was stuck on the Activation Lock screen — the seller had forgotten to sign out. I contacted the seller but go..."
James R. ·Manchester ·iPhone 14 Pro

About this DA678 × ATT unlock

ATT locks devices to its network when sold on contract or financed. Unlocking your DA678 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 DA678'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 DA678 unlock works regardless of which country it was originally sold in.

  • 🇲🇽 Mexico
  • 🇺🇸 USA

Popular DA678 models on ATT

FAQ — DA678 on ATT

Can ATT block this unlock?
No. Once your DA678's IMEI is whitelisted on the manufacturer's database, ATT cannot reverse it.
Will my DA678 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 DA678 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 DA678 from ATT?

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

Start unlock →