4G 5G switcher -Work All Phone is a free Android application developed by Rz InfoTech. It falls under the category of Utilities & Tools and aims to provide users with the ability to switch between different mobile network modes.

With this app, users can easily switch between 5G, 4G LTE, 3G, WCDMA, GSM, and CDMA networks with just a single tap. In addition, it offers advanced network information such as network connectivity info, network capability info, link properties info, and phone info. Users can also enable Volte on supported devices and check their internet speed. The app displays the signal strength and provides a history of checked internet speed tests.

To use the app, users need to open the 5G 4G Force LTE Setting in the app and select the desired mode. They can scroll down to find the option "Set preferred network type" and choose either LTE Only for 4G or LTE/UMTS auto(PRL).

Please note that this app may not work on all devices, as some devices restrict the force switching mode.