GNSS power save mode? Galileo satellites working on Nokia 8!
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Michael Neumann
Mar 28, 2018, 9:19:32 AM3/28/18
to GPSTest
Hello,
I have been owner of a Nokia 8 for a few weeks now. I am happy that it supports all four global navigation satellite systems (GPS, Glonass, Beidou and Galileo). Unfortunately, the phone switches off the reception of Beidou and Galileo satellites after a few seconds when a good satellite reception (outdoor, open sky) has been reached, presumably to save power, because with plugged in power supply or active power supply by means of a power bank Beidou and Galileo remain permanently active. Does someone know if this behavior can be configured? Or is it hardcoded in the chip used for GNSS? I would like my phone to use all available satellites even when running on battery. Being in contact with Nokia support was not helpful so far :-(
Best regards
Michael
I have been owner of a Nokia 8 for a few weeks now. I am happy that it supports all four global navigation satellite systems (GPS, Glonass, Beidou and Galileo). Unfortunately, the phone switches off the reception of Beidou and Galileo satellites after a few seconds when a good satellite reception (outdoor, open sky) has been reached, presumably to save power, because with plugged in power supply or active power supply by means of a power bank Beidou and Galileo remain permanently active. Does someone know if this behavior can be configured? Or is it hardcoded in the chip used for GNSS? I would like my phone to use all available satellites even when running on battery. Being in contact with Nokia support was not helpful so far :-(
Best regards
Michael
Sean Barbeau
Mar 28, 2018, 8:47:49 PM3/28/18
to Michael Neumann, GPSTest
Michael,
That's interesting. Could you share screenshots of both scenarios (plugged in and not)?
Sean
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Michael Neumann
Mar 29, 2018, 2:13:14 AM3/29/18
to GPSTest
Sure, first pic shows situation directly after starting gps, second pic shows situation after a few seconds, third pic shows situation with usb-power supplied.
Sean Barbeau
Mar 29, 2018, 11:15:14 PM3/29/18
to Michael Neumann, GPSTest
Very interesting. I haven't personally seen this myself before but as you say it could be an energy-saving measure. There isn't anything configurable via the Android APIs that can change this, so it's not something you could manipulate from GPSTest.
You could try modifying some of the platform GPS config files (e.g., gpsconfig.xml) although you'd need root - more on this at:
I haven't looked at these myself in quite some time so I don't know if there is anything there that could help.
Sean
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Lodro Gyamtso
Mar 31, 2018, 3:12:28 AM3/31/18
to GPSTest
After several weeks of using my new OnePlus 5T device that makes use of the SoC Snapdragon 835, I have noticed the same facts.
This at first did not know how to interpret it, but after many tests I managed to understand how the SoC 835 works.
when running GPS Test
- on the balcony of my house, without walking, I first see the GPS system, after Glonass, and after a few seconds, SBAS, Beidou and then Gallileo. But from 1 to 4 seconds Beidou and Gallileo disappear.
- When I get back inside my house, I see once again Beidou and Gallileo.
This happens when I am in or out of my home without moving. Shows or loses Beidou and Gallileo. This is proven after many tests I have done.
I saw on the screen and I understood that within the home, signal (db) is reduced and the GNSS receiver opens the other systems. But when I'm out of the house, the signal grows and uses only GPS, Glonass, sometimes and SBAS. The accuracy is 3 meters with only 2 GNSS systems.
When I get back into the balcony of my house and start walking whitout stopping after 15-40 seconds, it shows Beidou and Gallileo without losing them.
Of course when I am on the road, as pedestrian or with a car and then I am moving away from the first satellite position, I have never lost any GNSS system
The amount of time required to identify and lock all known satellite systems outdoors can last from 15 to 100 seconds
This at first did not know how to interpret it, but after many tests I managed to understand how the SoC 835 works.
when running GPS Test
- on the balcony of my house, without walking, I first see the GPS system, after Glonass, and after a few seconds, SBAS, Beidou and then Gallileo. But from 1 to 4 seconds Beidou and Gallileo disappear.
- When I get back inside my house, I see once again Beidou and Gallileo.
This happens when I am in or out of my home without moving. Shows or loses Beidou and Gallileo. This is proven after many tests I have done.
I saw on the screen and I understood that within the home, signal (db) is reduced and the GNSS receiver opens the other systems. But when I'm out of the house, the signal grows and uses only GPS, Glonass, sometimes and SBAS. The accuracy is 3 meters with only 2 GNSS systems.
When I get back into the balcony of my house and start walking whitout stopping after 15-40 seconds, it shows Beidou and Gallileo without losing them.
Of course when I am on the road, as pedestrian or with a car and then I am moving away from the first satellite position, I have never lost any GNSS system
The amount of time required to identify and lock all known satellite systems outdoors can last from 15 to 100 seconds
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