My OnePlus6 mobile doesn't show VoWiFi option for CellC sim ?
Are there something I should do, or is waiting for CellC the only solution ?
Just doing what's stated in the above guide did not enable VoWiFi on my OnePlus 6 on the Cell C network.
Are you still experiencing the 30 minute issue on OS 9.0.3?Just doing what's stated in the above guide did not enable VoWiFi on my OnePlus 6 on the Cell C network.
Following the tutorial (linked below) and using the "H3G UK Commercial" profile did enable VoWiFi on my OnePlus 6 running stock Oxygen OS 9.0.2 on the Cell C network. I have tried it and it works. I can make and receive calls using VoWiFi, and can also send and receive sms when using VoWiFi.
However, after enabling and using VoWiFi and then switching VoWiFi off there is a delay period of about 30 minutes when receiving sms messages. After the 30 minute period has passed things go back to normal without any delay when receiving sms messages.
Link to tutorial : https://forum.xda-developers.com/oneplus-5t/how-to/guide-volte-vowifi-german-carriers-t3817542
(Note: Follow the steps in the first post of the above tutorial.
Be very careful cos you could brick your phone if you make an error while attempting this)
Rather find the newer link on XDA don't use processes for older firmware or devices as you could end up with an expensive paperweightAre you still experiencing the 30 minute issue on OS 9.0.3?
Also, in your link, the link to the OP6 guide was disabled by XDA's mods. Is the process very similar to the OP5's process?