Oppo F5 Forum

General How to get rid the yellow device manager warning when try to use the screen off app

the latest update security patch just get my nerve
try to use the screen off app, the warning message of device manager keeps displaying on top of the phone screen
is there anyway to get rid of it?


#1 androsmedo, May 1, 2018
Yes, just allow the update
#2 Dannydet, May 1, 2018
#3 androsmedo, May 1, 2018
hi how ?
the yellow thing just keeps blinking when i activate the screen off app.
#4 androsmedo, May 1, 2018
Flashing yellow 'Device Manager is on' warning? Well I've never seen that on an Oppo phone before. Something new that Oppo has added with a firmware update possibly? Something that got enabled in Developer Settings? Other than that, no other ideas what it could be. What 'screen off' app of which you speak?Again I've never seen that on an Oppo before.
#5 mikedt, May 1, 2018
screen off app is the app to turn of screen without hitting the power button.
tried looking all in developer options nothing seem to turn it off

im dying goshh please help me
#6 androsmedo, May 1, 2018
Apparently this "device manager" is something that's been added by Google recently. Which could have been that update your F5 received.
How this is implemented in Oppo's Color OS flavour of Android, I don't know.

I've got an Oppo R9 here that I keep as a spare, and there's nothing like this on my phone. Also I've got a brand new Huawei Mate 10, and that doesn't have it either. And that's all I know about it.
#7 mikedt, May 1, 2018 Last edited: May 1, 2018
#8 androsmedo, May 1, 2018
Same issue here. I'm unable to use any email client for my work email due to this warning. This needs to be fixed :(
#9 Max_H, May 2, 2018
What happens if you tap to turn it off, like the message states?
#10 lunatic59, May 2, 2018
It deletes any account associated with the app or closes the app.
So if exchange is setup in any email client, it deletes the account and delete all emails.
#11 Max_H, May 2, 2018
It's not a bug, it's a feature.

Yours is an Oppo phone as well I assume?

Looking at the article I posted previously....
Google recently announced a new service - Android Device Manager,

And with Color OS that Oppo devices use, it's showing the yellow "Device Manager is on" warning. I'm pretty sure this is an issue that Oppo needs to fix with Color OS, possibly with an OTA update. Color OS is a heavily modified and customized version of Android, that's mainly used in and was originally intended for China, where there is no Google services basically. That's likely why I haven't seen it on an Oppo, and my new Huawei Mate 10 doesn't have this Android Device Manager either. I think this type of warning is specific to Oppo's Color OS, because if you root it, it will show a red "THIS DEVICE IS ROOTED" warning in the notification area.

I suspect this problem may also affect non-Chinese variant Vivo phones that use Funtouch OS, which is extremely similar to Color OS. Both Oppo and Vivo are really the same company, BBK.
#12 mikedt, May 2, 2018 Last edited: May 2, 2018
Yes, mine is an. OPPO F5 too but a non China version. Seems they didn't think through the implications while adding this feature.

Hope Oppo becomes aware of this problem sooner and launch the needed update.
#13 Max_H, May 3, 2018
This is happening to my Oppo F7 as well. Hope Oppo will fix this mess
#14 RadityaRusdi34, May 11, 2018
I get pretty much the same thing.

Trying to change anything on the screen lock is a pain. OnePlus5. I can turn the damn screen lock off, and then I promptly get love notes from Google about security which I consider none of Google's business. I don't allow Google's track my phone app and phone management utlitlies anyway. The apps for that are disabled, and NOVA Launcher prime is the phone's manager. I use the phone as a reference library, phone calls and texts. I don't need social apps, location, maps or any other apps in those categories. There is nothing personal installed on the phone.I don't need any security lectures.

The Vulcan pushes too hard when he tries to swipe, and since an illness, most of the fat layer or whatever padding under my fingers is gone and swipe doesn't always work.. He's allowed by me and normal family type usage to use the phone.

I will not do face, voice or fingerprint ID just in case the Vulcan does need my phone.
I want an app that will allow a sideways swipe or maybe 3 taps instead of a swipe.
#15 zuben el genub, May 11, 2018 Last edited: May 11, 2018
FWIW Oppo phones also do a similar yellow notification bar warning when Developer Mode is enabled. That other phones don't do.

Good luck in getting these things fixed, as Oppo don't really seem to be interested in much outside of China these days. They shut their international community support forum a while back now, and closed Oppo Style their international official retail site.

And talking of China phones, I wouldn't recommend buying a ZTE either now, because they may not have much of a future.
#16 mikedt, May 12, 2018 Last edited: May 12, 2018
It's a refurb and far, far cheaper than buying a new car to satisfy "hands free"
He simply will not use a non-flip. Think he's worried about butt-dialing and scratching the screen as he just shoves the phone in a front pocket. The other complaint is the keys are too small to type on.

If it works, and he likes it, I will simply have to find a decent android flip - more like a feature phone than a top of the line.

#17 zuben el genub, May 13, 2018
same goes here.. after download lockwatch app .. "device manager is on'' keep blinking non stop at the top of my oppo f5..what can i do....huaaaaaaa
#18 nur jaja, May 16, 2018