The gsm Unlocked HTC U Ultra is the same great device as any HTC smartphone, but without unnecessary pre-loads or sim restrictions. You'll experience more phone freedom than ever!

The gsm Unlocked edition on allows you to pop in an activated sim from the carrier of your choice* and change carriers at will.

AT&T, T-Mobile and many other regional and pre-paid networks can use a gsm Unlocked HTC U Ultra today. See the table below.

Why would I want a gsm Unlocked HTC U Ultra?

Less pre-loaded software. Unnecessary pre-loaded applications have been removed from the gsm Unlocked HTC U Ultra. You'll enjoy a clutter-free, customizable experience.

Switching carriers is a lot easier with the gsm Unlocked HTC U Ultra. You'll be able to switch carriers at will with the HTC U Ultra unlocked edition. Simply insert your activated AT&T, T-Mobile or other supported sim to begin using your HTC U Ultra.

International travel can be a lot easier too. A SIM unlocked phone allows you to switch SIMs to the local carrier of your choice, maximizing your coverage and minimizing your cost.

Why do you have individual carrier logos on your buy page?

Many customers already have service through their preferred wireless carrier.

htc U ultra unlocked cellphone

What US networks does the HTC U Ultra Unlocked edition work on?

The hardware for the unlocked HTC U Ultra will work fully on the following US lte networks:

  • AT&T
  • CellularOne
  • Consumer Cellular
  • Cricket
  • GCI (Alaska)
  • Good2Go
  • MetroPCS
  • NET 10
  • Real Mobile
  • Simple Mobile
  • Straight Talk
  • Telcel America
  • T-Mobile
  • TracFone
  • Voce Wireless
  • WalMart Family Mobile
  • Additional carriers may be supported. To confirm, check with your carrier to ensure the bands listed below are supported.

Unlocked devices usually don't support services such as Voice over LTE (VoLTE), Wi-Fi Calling, Mobile Hotspot and LTE Carrier Aggregation. Does the HTC U Ultra Unlocked edition support those services?

Yes, unlike other mobile phone manufacturers, HTC is proud to offer the best user experience to our customers. We support Voice Services over LTE (VoLTE), Wi-Fi Calling, Mobile Hotspot and Carrier Aggregation. Our HTC U Ultra has been built from the ground up for the North America customers and wireless networks. Some services may require the feature to be supported by your mobile operator before it will function on the HTC U Ultra.

HTC U Ultra Unlocked Band Support

4G LTE: FDD: Bands B1/B2/B3/B4/B5/B7/B8/B12/B17/B20/B28, TDD: Bands B38/B39/B40/B41 with 2CA, 3CA
3G UMTS: AWS/850/900/1900/2100 (B4/B5/B8/B2/B1), HSDPA 42, HSUPA 5.76
2G/2.5G - GSM/GPRS/EDGE: 850/900/1800/1900 MHz