iPadPro is divided into two versions a card version and WAFI version, the difference is that the card version more than a SIM card slot, that is, you can SIM access the iPad, using the SIM card connection cellular data for Internet access, WAFI version can only connect to WiFi or hot spots for Internet access. Details: Wifi version, does not support mobile networks. The card version (WLAN Cellular version) is a Wifi mobile network version, similar to smartphones, which not only supports Wifi networks, but also supports carrier mobile networks. (WLAN Cellular version) does not have a built-in phone component, so theoretically you cannot make calls. However, the (WLAN Cellular version) can achieve some indirect phone calls, such as by jailbreaking, and then install some network phone software, with the help of the mobile network can achieve phone calls.
In addition, you can also use some network telephone software to achieve the function of phone calls. But also need to pay attention to a problem, the iPad Pro tablet screen size reached 12.9 inches, as large as a laptop, obviously can not be as easy as the iPhone, hold the ear to call, so even if you can call, it will be very inconvenient.
Without considering the economy, of course, it is better to buy a card version, I am currently using a card version, with a 100G flow card a month, not to mention more cool. The iPad with a data card can better reflect its mobile advantages, and it is of course very convenient to use. Don't worry about the Wi-Fi signal. Some people will say that the mobile phone can be turned on the hot spot in the place without Wi-Fi signal.