What does the cell phone signal display HD mean?

The mobile phone displays high definition, which means that the mobile phone has opened the VoLTE high-definition voice call function, and there is no charge for opening the VoLTE function. The call charging standard is the same as the existing ordinary voice, and there is no traffic charge. Unicom customer SMS subscription/unsubscribe mode: subscription: DGVOLTE to10010; Unsubscribe: TDVOLTE to 100 10.

Advantages of turning on HD:

(1) You can make phone calls while surfing the Internet. When using VoLTE to make a call, the normal connection of 4G network can be guaranteed at the same time, and there is no need to switch back to 2G or 3G network.

(2) It is faster than ordinary calling and has better sound quality. It is found that ordinary mobile phone calls usually take 8 seconds to complete dialing, while VoLTE HD network calls can complete dialing in about 3 seconds, which is more efficient.

HD is the abbreviation of English HighDefinition, and literal translation means HD. This icon will be displayed when the VoLTE function is enabled in the call settings of the mobile phone that supports VoLTE function.

VoLTE is the abbreviation of English VoiceOverLTE, that is, transmitting audio through LTE network, which is also a voice technology.

Matters needing attention in mobile phone signal

The coverage of mobile phones varies from place to place. Some mobile providers provide better coverage than others, especially in rural areas with fewer signal towers. Use the coverage check tool to check the coverage of mobile phones in your area. If other mobile network providers provide better coverage for your location, please consider switching.

Improve the receiving position of mobile phones, because there are fewer obstacles such as buildings that can block signals. If you are at the foot of the mountain or in the valley, please start climbing. If you are indoors, please try to go upstairs and stay on the side of the house closest to the mobile company's transmitting equipment.