Yes you can. I have a 3G mobile hotspot by at&t called the mifi 2372, and it works GREAT for Xbox live. My little brother has It for ps3 and actually has nat type 2. If you play Call of Duty, there will be little lag, but still great, fast connection. In any call of duty games, the most bars you have is 3 unless your host, then you have 4 in gaming. I live out in the country, and I have VERY slow Hughes Net which doesn't provide UnUp (universal plug in play, for gaming) but then I got the mifi 2372 and it is great!! Other services such as Verizon and sprint also have the mifi 2372. Hope this helps!!
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Some PS3 games have online play. When you own the game, have an online connection, and the game disc is in the machine you can play online
Some PS3 games have online play. When you own the game, have an online connection, and the game disc is in the machine you can play online
You need the game in the PS3 to play it online, then it is an option available if you are also able to go online
no
No the PS3 network is free to play games on