Bog-standard mobile - not SMART. Pay as you go. Foolishly l let a child play with it, and now just a (I think) wallpaper is on the screen. It still makes and receives calls OK, but only shows the wallpaper on the screen. Looked in the manual but couldn't find a way to get rid of it. Phoned T-Mobile, who said I'd have to take it into a shop to get it factory-reset.
Can anyone help please?
Can anyone help please?