New to me, a simple way (I think) to get stuff off iphones and ipads, yes there are other ways but this looks easy. It's not the biggest but it seems to be pretty cheap from Mobymemory. Its expensive as flash drive storage but worth it I think.https://www.sandisk.co.uk/home/mobile-device-storage/ixpand
I now have the drive. It works both ways, you can (easily) send individual files or sychronise the lot (if you have space) there are two free apps to do that and they are easy and logical to use (amazing for apple). It works with ipads as well as iphones. The lightning connector is a bit difficult to put in particularly if you have a case. It's a bad design feature that the connector is in a recess to protect it and requires positive pressure to get it out, and more pressure if you have a case on the iphone or ipad. It would have been easier if they had just put the two connectors end to end as with micro usb to usb flash drives. On the drive are a couple of security programs for windows and apple. You can use these to password protect the drive. Finally, maybe a one off, but the USB connection is really tight in any usb socket, almost impossible to put in.
A very worthwhile purchase I think, saves a whole load of agro :)