Putting mobile tracker on iphone?

So my boyfriend has an iphone 3gs (jailbroken) and i have an iphone 4s (not jailbroken)
I'm wanting to track sms' calls etc on his phone, all the free tracking apps i've looked up cost unless the phones jailbroken i've heard there are free ones but i'm wondering if its my phone that needs to be jailbroken or his? And what are the best ones etc?

That sounds really risky… Are you sure you want to do that?

If you want to track your Boyfriend try to use this link:- http://www.softwarespycell.com is easy to install and cheap for you. You going to read everything SMS he send or receive.

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