External touch screen(Outgoing) 4G version for external touch screen (outgoing) 4G version for external touch screen (outgoing) 3G version for external touch screen(outgoing)3G version for external touch screen (outgoing) 3G version for external touch screen (outgoing) 3G version for external touch screen (outgoing) 3G version for external touch screen (outgoing) 3G version for external touch screen (outgoing) 3G version for external touch screen (outgoing)