Sharing files and photos between iOS devices is ultra easy thanks to AirDrop. In the Android world, it seems it's all over the place. Huawei devices have Huawei share, at least. But what about between platforms? I've tried many so-called file transfer apps, but they are all only work when they feel like it. Shareit, sendanywhere, etc all seem to work once and then I can never get them to work again. Tried all the QR code scanning and wifi hotspot crap. Yeah, sharing via cloud is possible, but when you're on the field and want to transfer huge files, relying on cellular is too slow. Any other ideas, especially ones that don't require sending files through internet (be it cloud storage, chat, email, etc)?