iPhone Error Cannot Call Messenger When Using 4G/LTE, Here’s How to Solve It!
However, if VoLTE encounters an error or your SIM has not activated this feature or the operator you are using does not provide the VoLTE feature, activating VoLTE on iPhone will not improve call quality, but will make calling over 4G/LTE more difficult. , even impossible.
To fix the error unable to call Messenger on iPhone, users only need to turn off the VoLTE feature, the steps to turn off this feature are as follows: Go to Settings -> Cellular -> Select the SIM you are using 4G / LTE -> Voice & data -> Turn off VoLTE , then need to turn off the iPhone and restart it.
After iPhone restart, the situation of interference, unable to make Messenger calls with 4G/LTE on iPhone will be fixed.
How can VoLTE be used on iPhone?
If the user still wants to use the VoLTE feature to improve call quality via 4G/LTE, there are two conditions that must be met: The operator you are using supports VoLTE and your SIM is VoLTE registered.
Currently, several major operators such as Viettel, VinaPhone and MobiFone all support the VoLTE feature. To register, you only need to install the application from the operator you are using, log in and continue registration.