IPhone 4 shut down unexpectedly?

I was minding my own business, being on kik talking to this guy. I downloaded pinterest. I put it in the folder then my iphone froze. The apple logo appeared and it went to the homescreen. Pinterest was alright downloaded. If it helps I have tried to Jailbreak it and if froze on the apple logo. Is there anything I should be concerned about?

Nothing to be worried about! Unless it happens a lot and you are getting bothered by it you should be ok! If it does still that then you might have to reset the phone to factory setting just back up before you do it and everything will be as good as new

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