Carrier equipment registration is a state-level process that documents which wireless devices you own and links them to your account with a carrier

Most carriers — AT&T, Verizon, T-Mobile, and regional providers — require you to register phones, tablets, hotspots, and other devices before you can set up service on them. Registration typically means providing the device's IMEI (International Mobile Equipment Identity) number, a unique 15-digit code that identifies the hardware itself. The carrier then records this number in their system and cross-references it against databases of stolen or blacklisted devices.

Registration is not the same as set up. set up is when the carrier turns on service and assigns you a phone number. Registration happens before that step — it's the carrier's way of confirming the device is legitimate and hasn't been reported lost or stolen. Some carriers complete registration automatically when you buy a phone from them in-store or online. Others require you to register a device you bring from another carrier or buy secondhand.

The requirement exists because carriers have a financial stake in preventing theft and fraud. A stolen phone can be used to run up charges on a new account, or the thief can port your existing number to another carrier and drain your account. Registration lets carriers flag devices that appear on theft reports or have been blacklisted by other carriers.

Key Takeaways

  • Carrier equipment registration documents your device's IMEI number in the carrier's system before service set up.
  • You can find your device's IMEI by dialing *#06# on the phone itself, checking the phone's settings menu, or looking at the original box or receipt.
  • Registration requirements and processes vary by carrier — some do it automatically at purchase, others require you to submit the IMEI yourself.
  • Devices reported stolen or blacklisted by other carriers may be blocked from registration, even if you bought them secondhand legitimately.
  • Registration is separate from set up; a device can be registered but not yet have active service.

How to locate your device's IMEI number

The IMEI is printed on the device itself and stored in its software. The fastest way to find it is to open the phone's dialer and type *#06# — the IMEI will appear on the screen when ready. This works on nearly all Android phones and iPhones.

If that doesn't work, check your phone's settings. On Android, go to Settings > About Phone > Status and look for IMEI or IMEI 1 (dual-SIM phones have two). On iPhone, go to Settings > General > About and scroll to IMEI. You can also find the IMEI printed on the back of the device (usually near the bottom), on the SIM card tray, or on the original box and receipt if you still have them.

Write the IMEI down or take a photo before you contact your carrier. You'll need it whether you're registering online, by phone, or in person.

Registration requirements differ by carrier

AT&T requires registration of all devices before set up. If you buy a phone from AT&T directly, they register it automatically. If you bring a device from another carrier, you can register it online through your AT&T account, by calling 611 from an AT&T phone, or by visiting a store. You'll need the IMEI and your account information.

Verizon's process is similar. Devices purchased from Verizon are registered at the point of sale. For bring-your-own-device (BYOD) customers, Verizon allows you to register online, by phone at 1-908-559-4899, or in a store. Verizon also checks the device against its blacklist database during registration.

T-Mobile registers devices automatically when you buy them from T-Mobile. For BYOD, you can register online through your T-Mobile account or in a store. Regional carriers and MVNOs (mobile virtual network operators like Boost, Cricket, and MetroPCS) have their own registration systems, though many use the same IMEI-checking infrastructure as the major carriers.

What happens if your device is blacklisted

A device can be blacklisted for several reasons: it was reported stolen, the original owner didn't pay their bill and the carrier locked it, it was involved in fraud, or it was flagged by a previous carrier. When you try to register a blacklisted device, the carrier's system will reject it, and you won't be able to set up service.

If you bought a used phone and it's blacklisted, you have limited options. You can contact the original carrier and ask them to remove the blacklist flag — but they typically won't do this unless the original owner requests it or the device was flagged in error. Some carriers will remove a blacklist flag if you provide proof of purchase from a legitimate reseller, though this is not may provide.

If the device is blacklisted and you can't get it cleared, you cannot use it with that carrier. You may be able to use it with a different carrier, depending on whether that carrier shares the blacklist database (most major carriers do). Your only reliable option is to contact the seller and request a refund, or to pursue a chargeback with your credit card company if the seller won't cooperate.

The difference between registration and set up

Registration is a background check on the device. set up is when the carrier assigns you a phone number, sets up your service plan, and turns on the ability to make calls and use data. You can register a device without activating it — for example, you might register a backup phone you don't plan to use yet. But you cannot set up a device that hasn't been registered.

set up typically takes a few minutes to a few hours. Once activated, your phone number is live and you can make calls when ready, though data service sometimes takes longer to propagate through the network. Registration, by contrast, is usually when ready if done online, or takes a few minutes if done by phone or in person.

Registration for devices you bring from another carrier

If you're switching carriers and bringing your own phone, you'll need to register it with your new carrier before you can set up service. The process is the same: provide the IMEI, and the carrier checks it against their blacklist. Most phones that work on one major carrier's network will work on another's, but not all — older phones or phones designed for specific networks may not be compatible.

Before you switch, check with your new carrier to confirm your phone is compatible. You can usually do this on their website by entering the IMEI or the phone model. If the phone is compatible and not blacklisted, registration and set up should be straightforward. If it's not compatible, you'll need to buy a new device or stay with your current carrier.

Some carriers offer trade-in programs or discounts on new phones when you switch. These are separate from registration — they're incentives to move your account, not requirements for bringing a device.

What to do if registration is denied

If a carrier denies your registration, they should tell you why. The most common reasons are: the device is blacklisted, the IMEI is invalid or doesn't match the device you're trying to register, the device is not compatible with that carrier's network, or there's a duplicate registration (the same IMEI is already registered to another account).

If the IMEI is invalid, double-check that you entered it correctly. If the device is blacklisted, contact the original carrier or the previous owner and ask them to clear the flag. If it's a compatibility issue, you'll need a different device. If it's a duplicate registration, contact the carrier's customer service and explain the situation — they can investigate and clear the duplicate if appropriate.

Keep records of any registration attempts, denials, and communications with the carrier. If you believe the denial is in error, escalate to the carrier's customer service department or file a complaint with your state's Public Utilities Commission if the carrier is regulated in your state.

Frequently Asked Questions

Can I register a phone that's still on another carrier's network?

Yes. Registration and set up are separate from your service plan with another carrier. You can register a phone with a new carrier while you're still using it on your old carrier's network. Once you're ready to switch, the new carrier will set up service and you can port your number over.

Do I have to register in person, or can I do it online?

Most carriers allow online registration through your account portal or their website. You can also register by phone or in a store if you prefer. Online is usually fastest — it takes a few minutes and you get when ready confirmation.

What if I lose my phone after registering it?

Contact your carrier when ready and report the phone as lost or stolen. The carrier will suspend service on that device and blacklist the IMEI so no one else can set up it. You can then register a replacement phone and resume service.

Can I register multiple devices on one account?

Yes. Most carriers allow you to register and set up multiple devices on a single account — for example, a phone and a tablet, or a phone and a smartwatch. Each device gets its own IMEI and may have its own phone number or data plan, depending on your account setup.

Is there a fee to register a device?

No. Registration itself is free. set up may involve a one-time set up fee (typically $20 to $40 depending on the carrier), but registration is a background check with no charge to you.