We have Verizon Wireless on our phones and Jet-Pack, and AT&T on our iPads. This way if one doesn't work, we can usually use the other for data. Both can be used as hot spots and provide an Internet connection for any of the devices we use. We have never been without a sufficient internet connection, but Verizon Wireless seems to be the provider we end up using the most. Usually, if we can get one, we can get the other, but one is always stronger than the other, so that's the one we use, and that is usually Verizon Wireless.
Bruce