Want to ask about iphone version?

Is it jailbroken or not
version:5.1.1(9B206)

Added (1). I have cydia is that mean it's jailbroken

IPhones don't come jailbroken (unless it was bought used from someone that explicitly stated that).

Looks like standard version iOS 5.1 for 3GS. Used to have one. Not jailbroken.
Best luck.
http://iosindex.com/ios/iphone/3gs/5.1.1-9B206

If you have cydia then yes it is.