i just bought two iphones and went with a 4gb Share everything plan. I was/am now paying $20 a month each for my wife's and my IPAD for a 1GB data plan for each IPAD. My question is can I cancel my 1GB data plan on each IPAD and then add the two IPAD's to my 4GB Share everything plan that I have with my iphones to use the same pool of data and can I do this WITHOUT disabling the SIM card in the IPADs and forcing me to get new SIM cards to use with my Share everything plan? Whats the process to do that? My last question is once I get the two IPADS over to my Share everything plan would I then have to connect via personal hotspot thru my iphone(1st one) or can I connect directly using my IPADS 4g LTE?