Can iPhone 4S be hit with spyware?

Had my bank details stolen don't use cash points much when I do I cover pin always
I recently viewed a car on eBay turned out to be a scam
Seller wanted to hold money in eBay payment protection account
Then send me the car
If I was happy eBay release the funds
I new from start it was a scam.
This is why I'm concerned he sent a false eBay invoice but I accidentally clicked a link on his page
A web page come up saying host offline but showed my IP address on the page
So could I have been spy'd on

I use 3G rot my internet on iphone

Yes, any electronic device can get spyware, windows, mac, linux, ios, android, All have the risk of getting malware, spyware, bloatware, & other viruses

Yes it is possible but it is a very low chance of that happening because IOS is one of the most secure operating systems

No. Nothing on iOS can talk or interact with anything else without your permission.

http://www.apple.com/..._Oct12.pdf

You do not have an IP address. You borrow one from your network provider when you connect to their network. It can be seen wherever you go on the Internet but it does not tell anyone anything about you.

This is your current IP address…

http://whatismyipaddress.com