This looks to be a follow up of:<p><a href="https://worthdoingbadly.com/vowifi/" rel="nofollow">https://worthdoingbadly.com/vowifi/</a><p>Which was a really good read!<p>I noted this however:<p>> However, VoLTE’s implementation is not compatible with our everyday VPNs and VoIP software. This report from Sysmocom shows that it would take months to modify Ubuntu Touch for VoLTE support.<p>I wonder why that is? I am using a Pinephone with Mobian right now, and a Librem 5 with PureOS, and both support VoLTE just fine.