Hissing sound from the back of my iphone 3G
Ok i know this sounds like an extremely paranoid question :D
i have recently bough a new iphone 3g 8 gb
i unlocked it and ofcourse JB , 2.2.0 /2.28
i have started to hear that hissing sound when i used a sim by a network provider that isnt the one i bought it from ( then again i only used the phone for like a day or so before ) , its very low but its there :D , its not consistent its like hearing a fax modem connection , although the phone worked perfectly ( there are occassional lock ups in some applications most of them are 3rd parties ) , when i removed the sim and entered one that is supported by network that the phone was intended to use there is no hissing sound so i can pretty much say its sim related , i still am doing some testing with phone to see if the issue would appear with this sim .
so wut do u think ? did anyone experience this issue with a sim card before ?
thanx in advance :)