Download Google messages, tap the 3 dots, go to settings, open chat features (top option), enable chat features. Once that's done go to auto-download files and set to the maximum size, 105mb. IPhone uses the same setup, except they only give up to 100mb. Uses wifi and RCS data connection to download larger files. Sent a short 4k video to another android running google messages and it went through perfectly fine.
... View more