The abbreviations 2G, 3G and 4G are the different mobile communication standards. 


The difference between 2G, 3G and 4G is mainly in the speed of data transmission. This is important on mobile devices such as smartphones in order to surf the Internet as quickly as possible. 


Currently, 2G, 3G, 4G and 5G exist in Germany, but not all four types are available in every region. A smartphone always chooses the best possible network, but not every smartphone supports 2G, 3G, 4G and 5G.


Android 10/12
Android 11
1. Open the settings1. Open the settings
2. "Mobile network"2. "Mobile network" 
3. "Advanced"3. "Advanced" 
4. "Preferred network type"

4. Now you can select your preferred network type
4. Now you can select your preferred network type