The wifi version can only use wifi to access the Internet.
The 4G version of the iPad not only uses wifi to access the Internet, but can also plug in a SIM card to access the Internet.
1, the 4G version and the WiFi version has the same screen, processor, fingerprint and other hardware level, the only difference is that the 4G version adds cellular data network and GPS and Glonass positioning system.
2. Insert the 4G card of China Mobile, China Unicom and China Telecom into the iPad4G version of the full Netcom version, that is to say, the 4G network of the three major operators can be retrieved.
3, 4G version of the body appearance and WiFi version of the same model is exactly the same, but the weight is slightly different. The 4G version weighs 444 grams, slightly heavier than the Wi-Fi version, which weighs 437 grams. There are two differences in the details of the fuselage, the 4G version of the fuselage has a plastic part at the top of the back, whether silver, gold and deep space gray have this area, the role is to make the iPad built-in 4G antenna can have better reception.
4. Compared with the WiFi version, the 4G iPad has the following advantages:
(1) First of all, with the cellular data network, iPad can be completely free from the restrictions of wireless LAN, anytime and anywhere to browse the web or send and receive emails, in addition, because the 4G version adds GPS positioning system, so iPad can also accept GPS satellite signal positioning in the absence of data network. (2) Although the 4G iPad adds cellular data, it still can't make calls or send or receive SMS messages, but with the new features of iOS 8, as long as iPad users have the same iCloud account of the iPhone, the iPad can replace some of the iPhone functions. This includes making and receiving calls, iMessage and SMS text messages.
5, 4G version is only for the mobile office has a high demand for users, most people for iPad just at home to read books and videos, 4G version is almost difficult to come in handy. And many business people, need to send and receive emails at any time, edit documents, work reports, etc., in the 4 inch or 5 inch mobile phone screen is obviously still a little cramped. And for today's iPad, the Office suite is already on the shelves, which will make mobile work feel like a fish in water.
The call version refers to the phone card can be inserted for use, the WiFi version is unable to use the phone card, can only connect to WiFi.