My 5 year old iPhone 8 was always a beast of a phone with Minecraft, but since 1.19, it's performance has plummeted. Chunks load slowly, sounds appear several seconds after they should, frame-rate drops, and the game freezes. I'm holding this is a software problem (since 1.19 is brand new and probably has quite a few bugs) and that it can be fixed. I don't think it would be a hardware issue since my phone never had a problem even with the massive 1.18 update.

Also, I was playing with my friends and disconnected (which happens a lot with the bad Wi-Fi). However, when I loaded back in, I found that my ENTIRE save file for that world was gone. My inventory, armor, levels, all of it. This is a major issue since not only is the game laggier than it was before, but peopel could lose their inventories or worlds.