Usar la aplicación APKPure
Obtener 4G Switcher versión histórica en Android
Fuerza VOLTE y 4G en la red 3G / 2G.
Change Signal to only 4G. Especially for phones which don't have 4G/3G option and have only 2G/3G/4G.
Switch to this app for better signal of 4G or 3G.