I think it is best to check the spec of any device as not all have in built GPS or cell phone. SD or FMS are not compute heavy programs so processor power is not a worry the screen and storage are I think are more critical even a cheap Chines will do the job and cost a third or less of an ipad. The yearly cost of phone/data and SD may exceed the tablet cost and its only a one off cost so even the extra of an ipad is not the biggest expense just some thoughts.