android: force low refresh rate
There are 2 adb command to change the refresh rate, one of them (or combination of both) might work on your phone:
adb shell settings put system min_refresh_rate 10.0adb shell settings put system peak_refresh_rate 10.0
Some vendors might have custom settings for changing the refresh rate, you can find them with adb shell settings list system | grep refresh.
Unfortunately my phone has locked possible refresh rates to 60/90/120, any other value won't do anything. But some phones seem to have lower possible refresh rate if you wanna try. If you're not sure which refresh rates are possible on your phone you might be able to see them with this: adb shell dumpsys display | tr ',' '\n' | awk -F= '/^ fps/ {v[$2]=1} END {for (r in v) print r}'. Not sure if this works on all phones, but worked on mine. (from so)
There should be "Show refresh rate" setting under developer options which helps to detect if the adb command was successful or not.
My idea was to force the refresh rate to something very small, essentially turning my phone into a dump phone.
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