Need something achievable for an extremely tech illiterate person on iOS. I got told about this after they are already gone and have no access to the device, but am asked to solve the problem.
EDIT: (SOLVED) Signal was super easy, works awesome, and was easy even for my mom to figure out on her own. Thanks
Element works without play services and has iOS & Android apps (plus web) and has a pretty friendly UI.
It’s also available from F-Droid, so you wouldn’t need a Google Play apk downloader.