https://ts.ifixit.com/Answers/Device/Oppo_A77_5G/All?rss=yes en-US Sun, 09 Aug 2026 14:08:08 -0700 The SIM network and outgoing calls are not working on my Oppo A77 5G. I have already tried restarting the phone, reseating and moving the SIM card to a different slot, toggling airplane mode, resetting network settings, checking APN settings, and ensuring VoLTE is enabled. The SIM card and mobile data still fail to connect for voice calls. What could be causing this and how can it be fixed?

]]> https://ts.ifixit.com/Answers/View/967379/Oppo+A77+5G+SIM+network+and+calls+not+working+after+troubleshooting https://ts.ifixit.com/Answers/View/967379 Sun, 09 Aug 2026 01:59:22 -0700