Which phone is compatible with my carrier?

1. What is the distinction between a locked and unlocked phone?

Locked phones are only compatible with certain carriers, while unlocked phones can work with any carrier. It is recommended that you choose a device that is fully compatible with your carrier to get the best service. Even though devices from a particular carrier may function with other carriers, the service may not be optimal. For instance, a Galaxy S10e that is specific to AT&T may operate with a T-Mobile plan, but MMS may not be sent.

If you are a Sprint customer or use one of its MVNOs, it is suggested that you buy an unlocked device since we cannot ensure that Sprint-compatible devices will operate on T-Mobile.  

2. Using a different carrier? 

In the United States, AT&T, Verizon, and T-Mobile (including Sprint) are the three major carriers that own and manage all of the wireless network infrastructure required for wireless service on our devices. 

All other carriers are Mobile Virtual Network Operators (MVNOs). They use the wireless network infrastructure of the three major carriers via contracts and business arrangements. They do not possess any of the wireless network infrastructure and are "renting space" from the three carriers.

There are many advantages to using an MVNO, such as being cost-effective and not having complicated contracts. However, it may have drawbacks, such as restricted coverage and service that is subject to data throttling.

Which network does my MVNO carrier use?

3. Verify carrier compatibility on the listing

After you've identified the phone you want, you may always verify which carrier(s) the phone works with and whether it's unlocked by looking at the listing.

4. Verify whether the phone is compatible with GSM or CDMA

If you're purchasing an unlocked phone, the next step is to check whether it's GSM or CDMA-compatible. Most modern phones support both frequency bands. 

5. I have already purchased a phone, what should I do?

a. Locate the IMEI Every phone has a unique IMEI number that can be used to check whether it is locked or unlocked. You can check the number using an IMEI checker.

Here's how to find your IMEI number:

For iPhone, navigate to Settings > General > About.

For Android, go to Settings > About Device > Status.

Alternatively, you can dial #06# on either an iPhone or Android device, and the IMEI number should appear.

b. Look for your carrier's BYOD page We have provided links to the Bring Your Own Device (BYOD) pages for various carriers below. Typically, carriers will verify the IMEI number of your device to ensure it is legitimate and compatible, and then request that you insert your SIM card and dial a number. If you are a Sprint customer or use one of its MVNOs, we recommend purchasing an unlocked device. We cannot guarantee that Sprint-compatible devices will function on T-Mobile.

BYOD pages for various carriers are listed below:

Contact your carrier