I’m reporting a Bluetooth (BLE) issue that has been affecting customers of ours who have Snapdragon 865 based devices including S20+ & S20 FE. This also affects devices of other manufacturers, who are also running SD 865 chip.
I reported the issue to google, via the android bug board, but they will not look into it because it doesn’t happen on pixel devices running stock android. (No pixel phones have SD865 SoC atm)
Please see https://issuetracker.google.com/issues/177246259 for details of the issue(s)
- Issue 1: BLE stack crashes causing the ble stack to turn off and on again - our customers see this as ‘peripheral disconnections’ due to the forced reconnection when the ble turns on.
- Issue 2: BLE corruption - packet data arrives into our app corrupted, ie not what the BLE peripheral sent. This causes our app to think our timestamp has rolled over causing the clock to jump ahead 49 days.
I can provide access to the supporting documents in the bug report for verification of my debugging.
We purchased a Samsung Galaxy S20 FE 5g specifically to debug this issue, and so far I have been able to reproduce the BLE stack crash (see last comment on the google bug report) but not the corruption yet. I will update here if/when this is reproduces, but i wanted to kick off with the crash as it seems that the corruption only happens after a crash.
I feel this is actually an issue Qualcomm might need to fix, but i can’t find any direct lines of support to them, so I’m going through the various device manufacturers.