I missed a call and the sign is flashing, I have returned the call but sign still flashing, please how do i stop this or delete it
Try pressing Calls/Volume Down & see if there's an option to clear.
Based on how other models work, I'd expect options to appear in the display above the Mute &/or Back buttons.
If that's not the case you'll have to resort to the helpline (0800 145 6789), unless someone who actually has one posts.