hi
i have a DJI A2 FC with S800 evo, i have a problem with the GPS. when i flying the s800 in a full space place in GPS mode, in a moment all of the sattelites was mising and the RED Led is blinking on the aircraft, It takes just a few moments before it falls to the state of at least 14 satellites are visible. i have a IOSD Mark2 and realy the counts of sattellites was 0. and when i landings, After a few seconds, and in a moment all the satellites are found again and LED again go to pink blinking.
i checked the wiring and Configs and also i recalibrated system in the my place but has not any problem.

Please Help me that how can i solving the problem

Please contact support and have the GPS unit looked at.. This is not normal behavior.