i have a son ericsson that was bought 3 weeks ago not 2 days ago it was on but when i slid it open the screen went off therefore i was unable to use the keyboard but when i close it the screen comes bk on so i can get on to the menu and thing but if i try to send a message or type a number i am unable due to the screen going off when slid open, why is this and how could it be fixed?