ViLTE

ViLTE is a technology for video calls over the 4G network - through it data packets are used to make high-quality video calls. ViLTE is an extension of Voice over LTE (VoLTE) that adds high quality video to voice over LTE. The service does not require additional registration or a special application in order to be used and to provide full security of SIM based authentication.

To have a smartphone, supporting ViLTE, subscription plan with 4G access and to be in the area of 4G coverage.
These are some examples that supports ViLTE Huawei P20, P20 Pro, P30 and P30 Pro, Samsung Galaxy S7, S7 edge, S8, S8+, S9, S9+, S10, S10e, S10+, Note8, Note9, A6, A6+, A8, J4, J6, J6+, A7 and A9.

ViLTE calls does not consume from the available MBs and are charged as per the official Yettel price list.

No, ViLTE is not accessible over WiFi.

No, ViLTE is not accessible for customers on prepaid plans.

No, the ViLTE service is not accessible for fix numbers, it is to be used only by mobile numbers.

No, the ViLTE service is not accessible while roaming abroad. It is accessible only on the Yettel mobile network.

If you are business subscriber who uses outgoing call restrictions or short dialing between business numbers, also if you use one of the IVR or Business Contact Center services, you may not use VoLTE

ViLTE in Bulgaria is only supported by certain models of phones - usually more modern smartphones. Maybe your phone doesn't support ViLTE, so you can't turn it on. Find relevant model with ViLTE on our website.
Alternatively, your phone may have software for another geographic region, meaning it is intended for markets outside Europe.

It is possible your plan not to include 4G service, or you are outside 4G coverage. In order to help you, please contact Yettel customer service.