How to use 2G mobile data network on Samsung Galaxy S4 Samsung Galaxy S4 does not provide direct shortcut to use 2G data network as shown in below settings, as like other mobiles. To use the 2G mobile data network on Samsung Galaxy S4 you will have to follow below steps. On your Samsung Galaxy S4, go to Settings and select More network. Under Wireless and Network settings, select Mobile networks. On Mobile Networks setting page click select the Network Mode setting. On Network mode dialog you may find below choices WCDMA/GSM ( auto connect ) : To choose any available 3G/2G network WCDMA only : Use 3G only network GSM only : Use 2G only network From the available Network mode choose GSM only mode, this will allow you to use only 2G network and not 3G.