Can I use a Galaxy Tab 3 without a sim card ?

[AC Question]

We want to use the tablet from our home wi-fi and not from a sim. We are able to connect the wi-fi however apps and internet do not work

 

[James Edmunds]

I think perhaps it means those apps that do not work on your tablet without a sim card need to connect to internet. Try some apps which may work well without internet connecting to verify that.