It is common now that the tablet also support the Sim card and can use it as a phone with bigger screen. However, the popular PIPO Tablet do not support this function and it only support the WiFi network to entertainment and working. But the new generation will be designed with more and more functions in future. Buy one of the popular PIPO X10 Pro, you can look at here: https://www.pipo-store.com/pipo-x10-tv-box.html