With Voice over LTE (VoLTE) technology there's no more shouting or straining to hear. It's just one of the many ways U.S. Cellular® is constantly working to improve our network.
It goes beyond delivering crisp, top-quality sound. This technology also lets you surf the web at 4G LTE™ speeds while making HD voice calls.
Enjoy incredibly clear quality and reduced background noise on data voice calls made on the 4G LTE data network.
Browse, post and stream, all while talking on the phone. You can use voice and data capabilities at the same time—and at 4G LTE speeds.
It's already available to many U.S. Cellular® customers. Enter your zip code to find out more about the coverage near you.
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To be eligible for Enhanced Calling Services, you need to meet all of the following requirements:
To activate HD Voice on your iPhone:
To activate HD Voice on your Android device:
Note: Once HD Voice is activated, you will be able to enjoy the other Enhanced Calling features, such as Simultaneous Voice & 4G LTE Data, and 6-Way Calling.
Enhanced Calling is a suite of advanced cellular services enabled by Voice over LTE (VoLTE) technology. VoLTE Technology optimizes the network by delivering voice calls & SMS traffic over the U.S. Cellular 4G LTE data network instead of the traditional voice 2G/3G network, delivered through our Enhanced Calling-capable phones when connected to the Enhanced Calling network. Enhanced Calling Services include the following features:
Note: Enhanced Calling features are included in your existing voice plan at no additional charge. Enhanced Calling is not available everywhere.
To be eligible for any of the Enhanced Calling Features, you need to have an Enhanced Calling-capable phone, and be in the Enhanced Calling service coverage area.
Note: If you have any features that are incompatible with the Enhanced Calling Service, they will no longer function upon availability of Enhanced Calling. Such incompatible services include Ring-Back Tones and Regional Abbreviated Dialing Codes.
U.S. Cellular is currently working to expand our Enhanced Calling footprint to include roaming locations. Until this expansion is complete, Enhanced Calling while roaming availability will be limited.
HD Voice is High Definition voice calls with reduced background noise for clear & crisp audio connections. You can talk in a normal voice and be heard clearly even in noisy environments. Conversations will sound more natural, almost as if the person at the other end of the line is right there next to you.
Note: You must to be talking to another Enhanced Calling customer to experience the end to end HD call quality.
Simultaneous Voice and Data allows you to surf the web, continue a download, use an application, or use a feature like Mobile Hotspot all while on a phone call.
A 6-way conference call can be set up exactly the same way you would set up a 3-way call. The only difference is that if your Enhanced Calling-enabled phone is connected to the U.S. Cellular Enhanced Calling network, you can set up a conference call with up to 5 other people, even if they don't have Enhanced Calling-capable phones.
View the current list of compatible phones. This list will grow over time.
HD Voice is included in all existing plans at no additional charge. HD Voice calls are billed as standard voice calls according to your plan. No data charges apply. Calls that happen to be HD Voice calls are charged just like traditional phone calls and are billed against your monthly minute allowance according to your plan.
See the coverage map for coverage availability. We are actively working to expand Enhanced Calling availability. Please check back regularly for coverage updates.
Note: Please contact Customer Support if you wish to continue to use the incompatible features above on the legacy 2G/3G network.
You must use the new SIM Card provided with your new eligible device. However, you still need to have the Enhanced Calling setting activated on your line before you can use any of the Enhanced Calling features i.e. HD Voice, and Simultaneous Voice & 4G LTE data.
To ensure that the latest software is installed on an iPhone:
To ensure that the latest software is installed on an Android phone:
Note: A software update might require a Wi-Fi connection and over 50% battery power.
To activate HD Voice on your iPhone:
To verify that the Enhanced Calling Features are ready to use on an Android phone:
No, your calling areas won't be restricted as a result of enabling Enhanced Calling. You can make or receive HD Voice calls as long as you are within the Enhanced Calling Coverage area, and talking to another Enhanced Calling user. If you are outside of the Enhanced Calling coverage area, you can still make or receive regular voice calls.
While traveling abroad, you can still make or receive regular voice calls on our roaming partners' CDMA or GSM networks, and use HD voice were available.
Note: While using HD Voice, you may experience some audio issues or dropped calls. If you are in an area where you are experiencing calling issues, you can temporarily turn off Enhanced Calling in your phone's settings.
No, calls won't switch between 3G and 4G LTE networks. If your call starts on the 3G network and you move to Enhanced Calling coverage area, your call will continue as a 3G/CDMA call. However, if your call starts on the Enhanced Calling network and you move to a 2G/3G area, your call will drop.
If you are in an area with a weak Enhanced Calling 4G LTE signal, you may want to consider temporarily turning off the Enhanced Calling setting on your phone to avoid dropped calls.
Note: Remember to turn it back on when you're in a strong Enhanced Calling 4G LTE coverage area to take advantage of the Enhanced Calling features i.e. HD Voice and Simultaneous Voice & Data.
You can make an HD Voice call the same way you make a regular voice call (e.g., from your Contacts app, Phone app or Recent Calls), provided that both you and the person you're calling:
You can set up a 6-way conference call the same way you would set up a 3-way call. The only difference is that if your Enhanced Calling-enabled phone is connected to the Enhanced Calling Network, you can set up a conference call with up to 5 people, even if they don't have Enhanced Calling enabled on their phones.
To set up a conference call with up to 6 phones:
If you're not able to make or receive an HD Voice call, it may be due to one of the following reasons:
Enhanced Calling is a first-generation service based on new technology that will improve over time. While the new technology enables exciting new features, like HD Voice, you may initially notice some differences in your calling experience. As needed, you can turn Enhanced Calling Settings off through your phone's settings.
4GLTE not available everywhere. See uscellular.com/4G for complete coverage details. 4GLTE service may be provided through King Street Wireless, a partner of U.S. Cellular. LTE is a trademark of ETSI.
Things we want you to know: If available, Enhanced Calling features are included in your existing voice plan at no additional charge. Enhanced Calling is not available everywhere. In order to utilize Enhanced Calling features you must have an Enhanced Calling capable/enabled phone, and be within the Enhanced Calling service coverage area. To experience HD Voice, both parties must have an Enhanced Calling capable/enabled phone and be within the Enhanced Calling service coverage area. Certain services are not compatible with Enhanced Calling and will no longer function when Enhanced Calling is enabled. Such incompatible services include Ring-Back Tones, Wireless Data Priority & Regional Abbreviated Dialing Codes. Enhanced Calling can be disabled if you need to utilize any of the incompatible services