iOS has had an issue for years now, where if you lock the screen of the iPhone that using the personal hotspot, it will automatically disconnect for some stupid reason. Android doesn’t have this problem. I think the reasoning is, because iOS and android used to different hotspots. Say I use my sisters, android devices are hotspot, and that never happens when I lock my device. Can Apple use the same Wi-Fi hotspot very because this is really annoying
Try connecting bluetooth instead of wifi. Turn on hotspot & bluetooth of phone 1 and bluetooth phone 2. Select to connect to bluetooth of phone 1 from phone 2. This solved it for me, i had this issue too.
I play pokemon go on 2 phones. Stable for 3hrs straight gaming no issue with bluetooth, but with wifi will disconnect occasionally.