Urgent help plz

[Android Question]

Hi,
i have an Android galaxy s2 model GT-I9100
its been like 3 weeks now since i started facing problems with it , where i get like a block sign all sudden on the top bar instead of the WI-FI sign or the data connection then it shuts down and i cant restart it unless i keep it on charge.
and the second problem is when i use any application i downloaded it will work for few minutes then it shuts down ,even if the battery is full.
I need help what can i do?!

 

[teddyearp]

Without a whole lot of other info to go on, (I.e. is the phone rooted, and/or running a custom ROM/kernel) I will say that on the surface, you might have an app that doesn't get along well with your phone. Try deleting any new apps from three weeks ago one at a time and see if that helps.

good luck