Any user with digi line find the speaker phone got backgrounds noise when calling?

Im switching from iphone 4:
- IS scrolling is a pain comparing to silky smooth iphone.
- Camera wise IS better quality in day but worse in low light.
- IS Audio quality output from headphone jack has background hiss where iphone is quite and nice
- IS multitasking and execution of app is way much much faster than iphone 4

I just hope gingerbread will make the UI scroll or pinch/zoom smoother, at least 70-80% of iphone smoothness

Anyone has problem when on phone call for more than 5 mins, and out of sudden the speakerphone will have strong interference (THe sound like you point a mic to speaker in karaoke room) ?

Except for the above, the speakerphone also having static hiss noise at the background no matter at what volume.

If nobody having this, i'm going for warranty from the shop

iphone 4 can do that too, but it will slowly crawling on the floor. Another thing of ip4 is the home button insensitive problem, when i want to switch between apps, double tap of home button is needed, after few months the button will wear off and not sensitive anymore. this IS is better since, i'm using less energy to hit a virtual button.

i never had any problem as stated, maybe you need to check what app that causing that.