Without SIM card, the tablet can only make phone calls through wireless network (download VoIP) or make video calls through QQ. It's impossible to locate and punch in.
At present, Apple's tablet is divided into two types, one is the WiFi version, and the other is the mobile version, which can only use WiFi to surf the Internet. In addition to connecting WiFi to surf the Internet, the mobile version can also insert phone card traffic like a mobile phone, so it is necessary to insert a traffic card, so I remind you that you can only use WiFi to surf the Internet, not insert a card.