I have tried an iPhone 6, iPad Air 2, iPad mini 2, iPad mini 4, and a Samsung Galaxy S2 on my P3S. I'm not a real Android fan, and my eyes aren't what they use to be, so I found the best for me to be the iPad Mini 4 for size, speed, and screen brightness. Since I use T-Mobile, I got their cellular version, and being a longtime patron, I got 2GB of data for free each month on that device. I think anyone can get 200MB for free. I cache maps when I can, but even when I have to use cellular, I've never used over 200MB of data, and it's nice to have sometimes. My 2 cents.