High data rates, low latency (delay): LTE is technically well suited for video calls.
For video telephone, when receiving a certain data transmission, it also need sending data out to the other side. The slight delay in LTE network also facilitate video calling but the new communication to take place in real time.
LTE: In theory, well suited
The connection should also be subject to no greater variations because this can lead to problems in understanding and distorted images. The data rates of 100Mbps downstream and 50 Mbps upload in LTE offer many possibilities. While the theoretical maximum values, however, is likely to come with LTE usually have the necessary 200Kbit/s.
Short response times (latency) are also necessary for video calling, not too long to wait for the response of the other person, who then may intersect with what you’re sending.
There are obstacles
Currently, video telephone over LTE has certain difficulties. The voice transmission is carried over the internet, which is called Voice over IP (VoIP). At steady-LTE tariff Vodafone VoIP is not allowed; thus here is video calling possible.
What a hindrance is the sales data added. The LTE tariffs have a monthly data limit. This is achieved, the speed is reduced, usually to 384Kbit/s, so video calling is possible, but the connection is faster, then the limit is available for other applications, only partially available. Per hour, video calling 100-200 megabytes incur data traffic. In the current LTE tariffs for people who like to chat and much, relatively soon is closing, especially if they have other multimedia applications run on the LTE line.