Hi @TDNZ,
I am sorry to hear about this.
I do recommend you contact your Local support team to repair your handset, but if you just want a work around for the overlay issue, please see below:
The message Screen overlay detected appears when an installed app, that has the permission to draw over other apps, is running in the background. When the message appears, you have to either pause the overlay feature of the relevant overlay app, or disable the Draw over other apps feature for the overlay app, that is, for the app that has the Draw over other apps feature enabled.
If you can't identify which app use the overlay, you can use Safe mode to exclude 3rd party apps. If any downloaded apps are causing a conflict with the phone, your handset will work correctly in this mode.
There are two ways to start the phone in Safemode.
The first method of starting the phone in Safemode is to press and hold the silver power button until the option to “Power off” displays on the screen. When this is displaying, press and hold on the “Power off” option on the screen and after around 2-3 seconds the phone will ask to reboot into Safemode.
The second method of starting the phone in Safemode if you have difficulty with the first is to reboot the phone and when the phone is booting up press and hold the down volume until “Safemode” is displayed on the screen.
Once the phone is in Safemode use the phone as usual to test if there is any change.
To exit Safemode once the device has been tested simply reboot the phone.
If the phone is working correctly in this mode, this indicates there is a third party app causing a conflict with the device.
When you use an overlay or filtering app such as F.lux, Twilight or CF.Lumen, the message Screen overlay detected can appear. The only time this message is shown is when you download a new app or try to use a new feature in an app you’ve already installed. When you use a new app for the first time or try to access a new feature, Android 6.0 will ask for your permission. The Screen overlay detected message is there to stop these permission requests from appearing until you’ve shut down or paused the overlay app.
The permission Draw over other apps allows an app to display on top of other apps you're using, and may interfere with your use of the interface in other apps, or change what you think you're seeing in other apps.
To avoid the message Screen overlay detected from appearing pause or close the overlay feature of an app. If this doesn't solve the issue, you should turn off the Draw over other apps feature for of the relevant overlay app.
To pause the overlay feature of an app
- From your Home screen, tap the Application screen icon.
- Find and tap the app that is causing the overlay.
- If a pause option is available in the app, pause the app. The pause feature may be a button in the app, or an option in the settings menu of the app. If a pause option isn't available, you have to shut down the app.
- Open the app you were originally using and accept the permission.
- You can now choose to reactivate the overlay app right away (the one you paused). You will then have to temporarily disable the overlay feature each time an app requests permission. Alternatively, you can choose to re-enable the overlay feature when you're prompted once you use the overlay app.
To disable the Draw over other apps feature
- From your Home screen, tap the Application screen icon.
- Find and tap Apps.
- Tap the settings icon (gear icon).
- Tap Draw over other apps.
- Find and tap the app running in the background (the overlay app).
- Drag the slider beside Permit drawing over other apps to the left, turning off the permission.
- Close and reopen the app you were originally using when the message appeared.
- Complete the set up of the application permission.
