I have one of these and they are pretty cool, essentially you can charge and back up your iPhone or iPad at the same time – in other words, a flash drive and a changing cable in one that can be used with an iphone or ipad.
I primarily use it when I’m flying, so i can watch a 10gb 4k movie while charging it with a powerbank. I got mine when they were $40, I think $25 is the lowest price ever – even cheaper than their 16gb USB 2.0 model.
https://www.amazon.com/iPhone-Mem…01A5HIVLC/