Hi, I have a problem which comes on my IPad Mini 4:

As long as SD is on the screen, all is fine. But if I change to another program, SD stopps logging after a few minutes. Any ideas ho to get SD running in the backround?

I have been getting Skydemon stop logging whilst being the main screen.
I get the Green box saying it is looking for the location.
I then have to go to "stop navigating" then tap go flying again and the yellow plan pops up for a couple of minutes and goes off again.

SD is the only programme running, I always switch the auto lock off.
It is not that it happens all the time. Yesterday it run perfectly for over an hour, today it dropped out all the time.
Last week was the same. One leg, no problems, second leg all I end up is a log of bits.

It is unusual because until 3 weeks ago, it was totally reliable, its an ipad mini with a Bad Elf Pro external GPS.
Its is running version 3.5.1.32, IOS 9.2.1