4G calls, also known as VoLTE (Voice over LTE), uses the 4G (LTE) network instead of 2G or 3G network for transmitting voice calls by transforming voice to data. If the 4G signal is not strong enough or if you are outside the 4G coverage, the call will be transferred to 2G or 3G network without any delay.
Faster call connection and better voice quality
If you use a VoLTE-capable phone that does not have VoLTE service activated, your phone will use 3G or 2G network and call initiation will take 5-7 seconds. With VoLTE, your phone will be able to connect almost immediately, thereby saving phone's battery and your time. VoLTE also enables much better voice quality.
Additionally, you will be able to use 4G internet during the call - for example, set up a mobile Wi-Fi hotspot and share your phone's data connection. The new technology also enables various future services, like call recording, intelligent caller ID, status, instant messaging, etc.
VoLTE calls cost as much as regular calls. Thus, there will be no additional charges for using the VoLTE service.
First, get a phone that supports 4G (VoLTE) calls (currently available: Microsoft Lumia 950, Microsoft Lumia 950 XL, Lumia 650 and Lumia 550 phones), and then activate the VoLTE service. If you are a Telia customer, you can activate the service through the Telia self-service or at a Telia store. VoLTE does not require a separate app. You would also need a 4G data plan subscription.
VoLTE is currently supported by Microsoft Lumia 950, Microsoft Lumia 950 XL, Lumia 650 and Lumia 550 phones, but the selection of VoLTE-capable devices will grow soon.
VoLTE works only on 4G-capable smartphones.
The following roaming and some other services are affected by 4G/VoLTE calls:
If VoLTE is activated, call forwarding works both in your home network and in roaming. If you make VoLTE calls on a phone that does not support the service and want to activate unconditional call forwarding, dial 6119925 (Estonian) or 6119926 (Russian). Call forwarding cannot be activated using a phone that does not support 4G calls.
With VoLTE you will always hear knocking when you receive another call during an active call. However, with VoLTE the caller will not receive a notification that you're busy with another call.
VoLTE service uses a new voicemail service with a new voicemail greeting. Your old voicemail messages will be archived and can be accessed by calling 5096006. To call voicemail from abroad, dial 5096005.
Hallo internet calls do not work over VoLTE. If you are an active internet calls user, we recommend not activating the VoLTE service.
Service restrictions can be set by your carrier or yourself. Restrictions set by the carrier apply both in your home network and in roaming. With VoLTE service, restrictions set by you do not apply in roaming.
To view restrictions that can bet set on voice services, click here.
Additionally, it is not possible to activate restrictions on a phone that does not support VoLTE calls.
- Restriction on outgoing calls (code 33)
- International call barring (country of location allowed, code 331)
- International call barring abroad (country of location + Estonia allowed, code 332)
If you use TwinSIM together with VoLTE and outgoing calls are restricted for the main number (e.g. with the Balance Limit service), make sure your calls are forwarded to the main number in order to receive calls.
If VoLTE and TwinNumber are used together, TwinNumber's fax and data call services do not work.
Go to your phone Settings > Regular and radio network > Mobile communications and SIM card > SIM card settings > Enhanced 4G LTE Services - IMS Registration. Your phone supports VoLTE if you have these settings.
If you have subscribed to the VoLTE service, then set the Enhanced 4G LTE Services - IMS Registration "On". The same window must show notification "IMS status: registered". If you have subscribed to the VoLTE service and activated VoLTE on your phone but the IMS status shows as unregistered, restart your phone and check again.