Are you having issues with calls? if so follow the steps below to turn on VoLTE which allows you to. make calls over the 4G network.
Step-by-step guide 🔢
Tap on the Settings app
Tap Network & Internet
Tap on Preferred network Type
Select 4G (if you're using a Fairphone please toggle 4G calling to on)
Restart Your Phone 🎉
Some android devices might not support VoLTE, please check your phone model to make sure it is compatible