The Difference Between VoLTE and 4G
VoLTE,It is the Voice over Long-Term Evolution,a voice bearer under LTE (4G network),Because the LTE (4G) network no longer transmits traditional voice, it can only transmit pure data, and voice must be transmitted through ims or 2-3G network, so only when VoLTE is combined with 4G, 4G has enough bandwidth to transmit VoLTE voice (3G bandwidth is not enough to transmit voice circuit), VoLTE and 4G co-exist.The difference between VoLTE and 4G is that 4G network is the carrier, and volte transmits voice.
Compared with 2G and 3G voice calls, volte can improve the voice quality by about 40%, because it uses high-resolution codec technology. VoLTE access delay is 50% lower than 3G, about 2 seconds, while 2G is 6-7 seconds. In addition, 2G and 3G offline dropouts occur from time to time, but the VoLTE hardly dropout.
For users, VoLTE experience is significantly better than traditional CS voice. First, the introduction of high-definition voice and video codecs has significantly improved communication quality; second, the call duration of VoLTE has been greatly shortened, and VoLTE has shortened the time by more than half compared with CS calls; third, users can also enjoy lower voice call charges.