In the first GTP series I was ever in my team mate had a HTC mobile be it from South Africa, he lagged badly, I actually still have the replay, If I knew how to upload it to youtube I would gladly share,
another incident, NASCAR at daytona, guy came in and said, "I'm using a new wireless set up through my NOKIA, please let me know if I lag and I will revert to my modem" he wound up jack hammering like a dildozer!
and don't get me started on the Galaxy S3, I Bought one brand new so I could play online anywhere, I have never experienced lag in a call of duty, I have seen minor jumps here and there but nothing like what was going on using that, plus I have the replay of another fella using a galaxy S3,
It sounds weird that I have all these replay's of people lagging, but, they were from replay's of some of the best races I have ever had with other people or I needed to save the replay as I am/ was a steward of that racing series,