Hello, I'm beginer.  
I have 4 flight and 2 with weak GPS signal (ATTI mode).
Please help. I don't know it's normaly or not?

Have you been flying in the same area?
Maybe there is something disturbing the gps-signals.
You should try it somewhere else.

This is same area and problem with sport mode. No problems without sport.
My airdata: example - 1, example - 2

I’m getting the same problems as well. Around 18 satellites but no signal bars on the GPS position. My phone never has with GPS so for me it’s really strange that Spark is having all these issues.

Mishanki Posted at 2017-12-29 05:11
This is same area and problem with sport mode. No problems without sport.
My airdata: example - 1, example - 2

So then try it on an other spot to see if it’s related to the drone or the surrounding.

Don't want to scare you but looking at the warnings you get , it look's very similar to people that lost their spark due to flyoff. you get IMU error and Compas error that's bad...

Dji how to prevent fly away in this situation? Or this is defect?

after all update set the imu again, i would set it anyway and move from the area

Update all before first start

Mishanki Posted at 2017-12-29 05:11
This is same area and problem with sport mode. No problems without sport.
My airdata: example - 1, example - 2

Hi, sir. Please try to fly in a wide place with less interference. Before flight, you can enter wifi setting and see if most of the channels are green. Please fly in recommended environmrnt for your drone's safety.