Is Airtel's 4G network slow

Vodafone: VoLTE for the time being not for other tariffs

Prepaid customers are still waiting for VoLTE
Installation: LTE-based Internet access has now also become the standard for Vodafone prepaid customers. Just this week, the D├╝sseldorf mobile network operator improved its CallYa Smartphone Special tariff, so that customers now have 1 GB of high-speed data volume available in every four-week billing period. A transmission speed of up to 375 Mbit / s is available in the 4G network.

However, customers with prepaid tariffs cannot make calls in the LTE network. "VoLTE can be used with Vodafone in the Red, Black and Red + second cards," said the company's press office on request from "There are currently no plans to extend it to other tariffs - not even to CallYa."

CallYa customers continue to automatically switch to the GSM or UMTS network to set up a call, even if the user's smartphone is suitable for Voice over LTE (VoLTE) and the device uses 4G for Internet use. This process, known as Circuit Switched Fallback (CSFB), delays the establishment of a connection. In addition, it does not always work reliably, so it remains to be hoped that in the future all customers who have LTE access for Internet use will also be able to make calls via 4G.

VoLTE and WiFi calling not with UltraCard

Prepaid customers are still waiting for VoLTE
Montage: It is still not foreseeable at Vodafone whether and when VoLTE and WiFi Calling will also be available for customers with an UltraCard. "" A multiple card like the UltraCard is difficult to implement even in normal mobile communications. And WiFi calling uses a completely new technology: Telephony over the Internet (IP telephony). It is very time-consuming to integrate such mobile phone products as the UltraCard into this new technology, "said the Vodafone press office.

Deutsche Telekom also offers calls in the LTE network and via WLAN for customers who use a MultiSIM. Telekom's MultiSIM is comparable to the Vodafone UltraCard. Up to three SIM cards are switched for a cellular connection. Telef├│nica also wants to enable MultiCard owners to use VoLTE and WiFi calling in the future. For this purpose, among other things, the company set up a new MultiCard platform last year.

More and more VoLTE-enabled smartphones

Vodafone also reports that an increasing number of smartphone models are suitable for Voice over LTE. In addition to the cell phones that are sold under the mobile network operator's own brand, this includes devices from Apple, HTC, Huawei, LG, Microsoft, Samsung and Sony. A list of all compatible end devices can be found on the Vodafone website.