iPhone screen goes black

hello everyone,

I am using iPhone 4 from 2 years I'm in somalia .Recently I got an issue,my iPhone screen becomes black whenever I start using it.I don't know what the problem.Can any one give me any solution for this?

crwdns2934089:0crwdne2934089:0 crwdns2934093:0crwdne2934093:0

crwdns2934109:0crwdne2934109:0

crwdns2889612:0crwdne2889612:0 0

crwdns2942205:01crwdne2942205:0:

@yare the iPhone guru's are @refectio and @teetopp so hopefully they will come up with an idea on how to help you

crwdns2934271:0crwdnd2934271:0crwdne2934271:0

crwdns2934285:0crwdne2934285:0