The cone of the blue dot in Google Maps is very broad, and in the navigation mode the direction is detected incorrectly and changes constantly. Tried to calibrate the compass, but with no result: 8-form movements have no effect (the compass accuracy remains "low"). Also tried to rotate the phone about all 3 axes, with no result too. Tests via *#*#7378423#*#* confirm the problem: the same direction is detected differently with 50-degree error, and compass calibration still doesn't work in this mode. Have done "Backup & reset -> Factory data reset", but this didn't help. What else can I try? Thanks in advance.
