if we buy iphone 3gs and do not upgrade it to ios 4 then would we have to

Matt

New member
compromise some of the apps and game? i mean to say that is it like that that some apps and games doesnot work on previous ios or not compatible issues.
is there any problem upgrading 3gs to ios 4.
is it necessary to jailbreak the iphone so that the games and apps from external sources such as torrents work on the phone and r there any problems in jailbreaking the phone .
please reply fast i have to buy one.
 
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