I have an iPad and a Samsung Galaxy S4. I use the iPad the most, but I use it mostly at home when it's on WiFi. When I travel, I just add to my data plan as needed, usually just for $20.00 with Verizon. My smart phone is with ATT and I pay $100.00 per month, but that depends on how much data you use. You can set the phone to deny access to data when you get close to your monthly limit so you don't have high overage charges.