I want one hotspot to use at a 2nd residence, a car and an RV, in other words to take with me. And a plan with more data than 15G/ mo, probably 50-100G. I have an older unlimited plan with 3 phones, a tablet and an unreliable hotspot. AT&T must have something comparable to the newer Verizon and T-Mobile plans which are much more reasonable for mobile WiFi. Not seeing this on website. Thank you.