The 0x37 capabilities came from LOS14.1 releases, I don't know why this was changed.
In case you are still wondering about the capabilities part, the difference between 0x37 and 0x31 is that 0x37 has bits 1 and 2 enabled. According to the commented part, these are MSB and MSA. These are A-GPS features: https://en.wikipedia.org/wiki/Assisted_GPS#Modes_of_operationAs for why the changes you saw are in the source, my guess is that the changes were Kanged from another device that may have slightly different hardware.
To me it looks like, on GPS Test app, the amount of satellites "In use" is always the same as GPS satellites with a signal bar. I know this is vague but it looks like GLONASS satellites are not in use even if their signal is found. Can someone confirm?Again, we don't have BEIDOU. As for which satellites are used to get a fix, I cannot remember any GPS test app that actual distinguishes which satellites are used. Most I have seen gives you the number of satellites used, and the strength of each satellites, so you can only assume that the strongest satellites are the ones being used.
Please give a screenshot to show that you know that the GLONASS satellites are not being used.
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