How do I know if the phone can work with my SIM card in my country?

1. You can click the links below to see other users' feedback:

2. You can find the the phone's supported bands in product specifications and check if those meet your sim-card carrier's needs or contact your carrier.

*Due to different carrier's policy regarding to unlocked phones, LTE wireless service may not be available even if listed bands are supported by your carrier. When this happens, please contact your carrier for more details.

Is Unihertz smartphone compatible with major US carriers?


We have recently made an announcement on the connection issue with AT&T.

Notice: About Recent AT&T Issues in USA

According to the feedback we receive from users recently, you can still use the smartphones on Verizon and T-Mobile.

For Verizon users:

Our phone can work fine in Verizon network. However, as it is not certified by Verizon, you cannot activate your new SIM card with it. Please activate the new SIM card with another Verizon certified device and then use it in your Unihertz phone.

For T-Mobile users:

You can use the SIM card on Unihertz smartphones.