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diff --git a/static/usage.html b/static/usage.html index d0264e36..c954d5a9 100644 --- a/static/usage.html +++ b/static/usage.html @@ -1128,6 +1128,13 @@ It is not possible to change the IMEI on a production device and GrapheneOS will never add support for this.</p> + <p>Android 12 introduced support for the <a href="https://www.gsma.com/newsroom/wp-content/uploads//TS.43-v8.0-2.pdf">GSMA TS.43</a> standard, where provisioning for VoLTE, + VoNR, Wi-Fi calling may be handled by Google Firebase. Currently it is very rare for + carriers to be using Firebase to handle this. It is unlikely, but technically possible, that + with such carriers, you may be required to install sandboxed Google Play in order to obtain the + former mentioned functionality where the carrier has not implemented fallback provisioning via SMS. + Currently only US Cellular, Orange France, Cspire US, Cellcom US are using this standard.</p> + <p>GrapheneOS includes bypasses for carrier restrictions on APN editing, tethering via USB, Ethernet, Bluetooth and Wi-Fi and the ability to disable 2G, actions which would not necessarily have been possible on the stock operating system.</p> |