I use T-mobile wi fi 4 G LTE from my tablet?
You will have to check with your carrier to find out. I assume you mean using tablet as the hotspot?
Most cell carriers throttle back speed after so much data is used. Lets say you have unlimited data plan...they give you 10 or 20GB of data at LTE speed which is 12-16MB of speed which is enough to run box. But 10GB of data will only last you 8-10 hrs watching something in 720 HD and after data is used, they throttle back down to 1-2MB of speed until remainder of billing cycle is up to start over. There is SD channels on this in which it doesn't use as much data but you don't get to use the full effect of box. I don't know if T-Mobile does this and I am only speaking on Verizon. Out of all the boxes I have sold, only one came back due to using hotspot for Verizon. I do however have a customer with the same MiFi which is a business account and he said he has no issues but I did call Verizon about business accounts and they said it's the same but they get a little more data before it throttles back.