Why the is on but in a dark screen with the words "Alcatel one touch

Anyone has any ideas or same problem from Alcatel phone. This is the third time the dealer had to replace this phone for me for the same kind of issue.

One late afternoon my Alcatel one touch phone suddenly blacked on me, it would not completely turn on or off. It only has a dark screen with the words "Alcatel one touch" and in the bottom " powered by Android" it blinks every other couple seconds or 4.