Litchi waypoint mission will not start

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Jan 29, 2017
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Hi,

I tried launching a waypoint mission in Litchi App. I had preplanned the mission on the Litchi Hub. My drone is a Phantom 3A, and I use a Google Nexus 7 (2nd generation) tablet.
The mission was in a coastal open area without any visible interference.
I calibrated the compass before takeoff.

I took off in P mode with FPV and then switched to F mode and Waypoints, loaded the mission and launched it. The display showed 15 satellites the green tab changed to NAVI, and there was a notification saying initialising. The drone flew for a while and then stayed in hover. I switched to P mode and sent a RTH command and landed the drone.

I tried this with the same results for three times.
The second time, as soon as I launched the mission the voice prompt said: Warning cannot start the mission; weak GPS reception on aircraft.

When I checked the Healthy Drones reports, it seems that the drone kept shifting from NAVI to GPS ATTI to Atti.
Can you explain this?
 

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