If you are having TAB (Tablet Computer) without SIM card support, you can still run internet in the TAB by using internet connection from the other mobile. The other mobile can connect to internet by 2G, 3G or 4G network. The above type of TAB uses only Wi-Fi signal to connect to Internet.
The only requirement of other smart phone is that, it should be Wi-Fi hotspot enabled device, meaning is that you can generate Wi-Fi signal from this type of mobile. Most of Android Mobile is having this facility.
To generate Wi-Fi from your Android mobile, 1st you need to enable the data connection in your mobile. Once date connection is established, you can start Wi-Fi network from your mobile by going at Setting > More > Tethering & Portable hot spot > Slide Wi-Fi Hot Spot to ON Position. For password and other setting, you can click on Wi-Fi Hot Spot and manage it.
Once Wi-Fi Hot Spot becomes ON, you will have Wi-Fi network in nearby area of mobile, if you search for Wi-Fi network in your area in your TAB, you will be able to see the Wi-Fi network provided by your mobile, connect to the Wi-Fi network and use the internet in your TAB. The data will actually come from the SIM inserted in the mobile.
You can use this method to use internet in “SIM card not supported TAB “ in traveling also, you just need to keep Wi-Fi hotspot ON in your mobile and keep it in your pocket.