Hello

Today i did get this error: "warnings:Mobile device CPU fully loaded. Related performance will be affected." after it the mobile phone dji go 4 said disconnected, i get black screen and spark started getting down , 1 meter aside of a tree...

Spark last firmware

Iphone 6 IOS 11...

Can you please specify, which version of the DJI Go 4 App you were using? Because as of today, a new version of the App is available (4.1.11) which might address the issue you just described.

4.1.11                 

Please make sure your mobile has enough space and prevent it from direct sunlight with a sunshade or a monitor hood, it will be helpful.

It gets lot of space. And it happened at night temperature 16degrees. It maybe a problem about IOS 11 and the iphone 6

I forget to say that. At that moment that i get “ disconnect” on dji go app the control stick did not respond, and spark descend in a vertical line.

Once i was connected via rc, it was better to keep control sticks working

ZukySpark Posted at 2017-9-22 01:51
It gets lot of space. And it happened at night temperature 16degrees. It maybe a problem about IOS 11 and the iphone 6

I've been using IOS 11 since June (beta) with zero issues.  might want to check your cache settings in the GO4 app.  make sure it's set not to exceed the available memory on your iphone.  

I had this message a couple of time a while back, RC, OtG, iphone  5s with current app back then.  No problem controlling and app stayed up. I suspect heat but cant  be sure.

DJI Susan Posted at 2017-9-22 00:48
Please make sure your mobile has enough space and prevent it from direct sunlight with a sunshade or a monitor hood, it will be helpful.

LOL, that was a joke , right? "prevent it from direct sunlight", what does this have of the reported issue?

LOKY Posted at 2017-9-22 05:40
LOL, that was a joke , right? "prevent it from direct sunlight", what does this have of the reported issue?

No it has a point....I had the same warnings on an iphone5s witch i tested in a warm environment....I phones when warm up from the sun or the environment triggers a switch in the phone witch underlock the cpu in order to prevent damage from heat....In that case dji app can not use the cpu in foul ghz......so it pops up that massage and lag starts......

Anuvis Posted at 2017-9-22 08:36
No it has a point....I had the same warnings on an iphone5s witch i tested in a warm environment....I phones when warm up from the sun or the environment triggers a switch in the phone witch underlock the cpu in order to prevent damage from heat....In that case dji app can not use the cpu in foul ghz......so it pops up that massage and lag starts......

That is weird, I have a 7 Plus, never had this issue, and I used is some high temperatures. Not sure iPhone does that, at least the >= 5 models

It's an iPhone safe mechanism... Every iPhone has this.....Try find this on Google....

When u get this warnings your dji go disconnected and spark landed? Does the stick comand should keep working?

ZukySpark Posted at 2017-9-22 09:51
When u get this warnings your dji go disconnected and spark landed? Does the stick comand should keep working?

No the app crashes and spark flys normal with remote but you must have it in your los in order not to make a mistake and bring it back

Keep your ram clear, ie exit all apps running in the background. iOS is great for multitasking but it eats up a lot of memory. DJI Go 4 is a memory monster.

In my case the app did no crash simple show disconnected on upper bar and black screen

Dji. Why stick comands did stop working? Is that supose?

Whenever i ve gotten this error message the app didnt crash, the RC remained connected, the spark didnt seem to be affected and video / telemetrykeot streaking on the phone.  As a precaution i returned and landed anyway.

Now i always make sure i close all open apps before the first flight and shutdown restart the phone