<![CDATA[Calls not working on Volla Phone with Telus Canada network, but data and SMS work fine]]>I have a Volla phone and would like to use it with a Telus Canada SIM-Card that I purchased today, but phone calls do not work at all (neither incoming nor outgoing calls). Data and SMS do work fine, though.

I don't know what to do. Do you know any solution to this problem?

Some more detailed description:

  • Calls work on a Samsung smartphone using the same SIM.
  • I noticed that Volla does not recognize the SIM/network ("Unknown") if I set the cellular to 2G only or 2G&3G.
  • The Telus frequencies seem to match the ability of the Volla. Telus: HSPA: 850 MHz and 1900 MHz (UMTS)

Maybe related (but I am not sure):
https://github.com/ubports/ubuntu-touch/issues/1629
https://forums.ubports.com/topic/7013/us-networks-compatible-with-volla-phone

]]>https://forums.ubports.com/topic/7763/calls-not-working-on-volla-phone-with-telus-canada-network-but-data-and-sms-work-fineRSS for NodeThu, 12 Mar 2026 22:25:39 GMTThu, 26 May 2022 01:50:01 GMT60<![CDATA[Reply to Calls not working on Volla Phone with Telus Canada network, but data and SMS work fine on Fri, 27 May 2022 03:51:50 GMT]]>@gt said in Calls not working on Volla Phone with Telus Canada network, but data and SMS work fine:

@gt The issue/thread can be marked as SOLVED

https://forums.ubports.com/topic/6311/how-to-ask-a-question-and-then-mark-it-as-solved?_=1653623418131 👍

]]>https://forums.ubports.com/post/64392https://forums.ubports.com/post/64392Fri, 27 May 2022 03:51:50 GMT<![CDATA[Reply to Calls not working on Volla Phone with Telus Canada network, but data and SMS work fine on Thu, 26 May 2022 23:36:41 GMT]]>@gt The issue/thread can be marked as SOLVED

]]>https://forums.ubports.com/post/64390https://forums.ubports.com/post/64390Thu, 26 May 2022 23:36:41 GMT<![CDATA[Reply to Calls not working on Volla Phone with Telus Canada network, but data and SMS work fine on Thu, 26 May 2022 23:36:13 GMT]]>@gt After some investigation, I figured out the root cause of the problem.

Indeed, the Telus and Koodo networks in Canada seem to not support GSM/2G. The 3G/UMTS frequencies applied here in Canada do not seem to be compatible with the Volla Phone. The 4G/LTE frequencies are supported by the Volla phone. VoLTE is not supported by Ubuntu Touch. Thus, the result is that voice is not working (2G/3G), while data (4G) is working. SMS are working, but I don't know why.

A solution to the call problem are the Fido and Rogers networks. They support GSM frequencies that are also supported by the Volla Phone.

In the end, I use 2 SIM cards, data on Telus (the SIM I bought first) and calls/SMS on Fido.

]]>https://forums.ubports.com/post/64389https://forums.ubports.com/post/64389Thu, 26 May 2022 23:36:13 GMT