Use phone for online games

Hi,

I play alot of fps games. I was thinking of using my phone to connect to the internet on my laptop when im on the move. But my data plan is only 500mb. How much bandwidth do games like Call of Duty and Team Fortress 2 use typically. I'm talking just unmodded vanilla servers. Will the 500mb be sufficient to play games on the odd occasion? Please note I rarely if ever use any of it on my phone.