Force 4g LTE network mode Only and LTE only network mode for dual sim supports. It has 4G LTE Switch . 4g only network mode opens a very useful setting of menu where advanced network configurations can be selected for dual sim setup. It is common that all smart devices get switched to 2G or 3G network mode , if there is no 4G coverage available. But some devices face issue for switching to 4G LTE mode even though there is enough LTE coverage. If you are in middle of such issues, here is a