now i'm communicating with apple support regarding the hissing issue, already email them the video of my phone with hissing issue, looking forward to the reply.

if before this u were android user, i guess u will love ur i7 very much

u r damn lucky !

u r absolutely correct, not only games, mostly all of the application.
Apple products is expensive but all the money we paid are worthy for the software they created.
now android manufacturer keep on pushing hard on the hardware, but in mobile technology world, software and hardware both are playing a important role and software is something very expensive, not only money but also the intellectual

performance yes, iOS is fast, but what i want to highlight is the integration of all the applications with iOS are very well, no matter the stock apps or the third party apps we downloaded from apple store. the quality control for apple store on every single app is very good.

hope mine will get replaced with brand new set also....
now still waiting for them to reply....

run an apps (video recording, HD games. rebooting the phone), place the back of the phone to your ear.
if there r hissing sound, you can hear it from the apple logo there.

at first i also have the same thought as u, but after few days i plan to report because in future i might need to capture video recording in a very quiet room, so if this issue never been solve, i will not able to capture a video in a quiet mode. so i decided to contact apple by today.

i'm using the stock mail from iOS by adding my hotmail account, no problems at all