There's a yellow line above your home button.. I think it's burned
Anyone please advise me

If it's a line on the bottom of your LCD, then 'burnt' would be a strong word. I've seen this occur before, but only within certain apps/environments. Turn off the phone for a while, then turn it back on. If the symptoms persist, the most you would need to be concerned about is an LCD replacement.

Please note that without a photo/screenshot, it's difficult for anyone to make even a plausible diagnosis of your problem. Start with that first.

Thanks

can you post a pic or two?

hmm.. that could be software installed from cydia..
cant remember the name.. it's something like auto-hide dock..
lolz..

bros and sisters...
i found out the problem..
its the dock prefs app...
haha...
thnks anyways... im a newbie in iphone so im a lil scared if anything happen to it...
lol..
haha