Hi My mother lives in the UK and relies on her iPad Air 2 quite a bit. I bought her this iPad in August 2015. I can only visit once a year or so on average. Should I bring her iPad on this trip, or wait a year? "Of course I should bring her one" is the only right answer, but I have some other expensive things on this trip. So, I'm asking based on general reliability of this model, likelihood of iOS updates, battery life expectancy etc. Is the consensus that these models would work through to early 2020? If her iPad broke I could begrudgingly buy her one at UK prices, but I'm asking now because I set it up nicely for her and make sure she is happy with it. Thanks!