Yes, on the “hotspot” phone, I cannot successfully download apps from network. To reiterate, I’m NOT using Home Internet, I’m using a data sim in a mobile phone.
I have the download issue with a e-reader (Boyue T80D) running Android 8.1. I’ve sent a bug report to Google for whatever value it might have. Other data use of the hotspot works normally. I suspect Google Play Store has problems with latency. I ran a Oogla Speedtest to Tampa (USF) server:
Download 6.7 Mb/sec, Upload 0.80.
Ping: Idle tatency 99, download 295, upload 100 msec. Test was done at 08:40 AM local.
For comparison, I swapped to my phone that uses AT&*T network and turned on its hotspot. Here are the Speedtest numbers:
Download 23.2, up 0.20.
Ping 998, 426, 466.
On the "T-mobile" phone, turned off mobile data, wi-fi on, and was able to update 4 apps via the Google Play Store. So likely it’s not the latency.