AirDrop has its issues too. Used to work in educaiton at a school with 100+ iPads within reception range. Quite common to have A-to-B drops work but not the rev

AirDrop has its issues too. Used to work in educaiton at a school with 100+ iPads within reception range. Quite common to have A-to-B drops work but not the reverse direction i.e. B-to-A. Solution was often to ask another student C and use their iPad as a proxy i.e. B-to-C-to-A to get something from B to A. Quite fustrating given it would be an issue one day and not the next and what device it appeared on was totally random too. The same device B would send/receive fine to other devices but just not to A, and A itself would send/receive file to others but just not to B! No rhyme or reason to it, and of course being Apple no way to properly debug it.