I need a good Windows 10 tablet with Intel i5 and at least 4 GB RAM, preferably 8 GB with LTE on AT&T network. I found HP Spectre 2 and Lenovo with Verizon LTE Service, but not AT&T. The only AT&T tablet is Surface 3 with Atom processor. I want something powerful. I searched the internet and it is so difficult to see powerful Windows LTE tablets and laptops. I believe every tablet and Laptop should have a SIM card and option to get Internet 4G LTE service from any of the service providers. I also wonder, why Microsoft did not come up with Surface 4 with LTE option yet.