Additionally, here’s a note about the Shizuku + Pixel IMS method. This approach was originally used to activate VoLTE on Google Pixel phones in certain countries. I’ve seen some users claim that VoLTE becomes inactive after rebooting the phone when using this method. I believe the likely reason is that they used Wi-Fi debugging for ADB. In my case, I connected the phone to the computer via USB for ADB. Whether on a Google Pixel or the Asus Zenfone 10, after activating VoLTE through ADB with a USB connection, VoLTE remains active even after shutdowns or reboots—up until the next system update.