My son has recently got a Samsung Galaxy Ace android phone. Somehow he has managed to remove three of the four icons that are normally at the bottom of the screen ( typically the green icon for making a call, the contacts icons etc ).
The bottom screen has now only one button a blue box with four small white squares in it.
How do I get the missing buttons back?
To be specific the buttons that have gone are "Phone", "Contacts" and "Messaging". Instead of being on the bar at the bottom of the screen they are now on the wallpaper with all the other icons.