Brightness of iPhone is very low after unlock

[xanix]

Hello,
I have iphone 3gs 8gb which is 3 months old. It has amazing features and it looks very well. It works well until last week. From last week whenever I unlock my iphone, It start with low brightness or dimmed. It only start up with normal brightness when I press the power button and re-slide the unlock button. Is any one having same problem? Can any one tell me how to fix this problem?
Thanks in advanced.

[Gonzo]

As per your information it seems that you may have accidentally keep brightness to the lower level. Due to this your iphone is start up with low brightness. You can increase your iphone brightness in following way.
Unlock your iphone -> Go to main menu -> select Setting option -> click on brightness -> there you can find one slider with pointer -> now to increase the brightness move pointer to the right hand side as per your comfort -> now press OK.
As per my advise you must keep brightness as low as possible because it helps in increase the iphone's battery life.

[Pugsly]

I think for long time you haven't reset your iphone. It happened that if you don't reset your iphone for long time then your iphone is filled up with lots of unwanted stuff like cookies, cache, unwanted files, save history, etc. In this case your iphone needs to be reset to delete unwanted files. You can reset your iphone in following two ways
1. Open setting option-> click on reset option -> now click on Reset Phone -> it asked you for confirmation -> accept the confirmation .
2.You can instantly reset by pressing sleep/wake button and home button simultaneously until logo of apple appeared.

[Regina]

I also had the same problem. I tried various method but it didn't work out. I tried to increase brightness but it didn't work out. Then one of my friend said me to restore your iphone. After restoring my iphone it works very well now. As per my suggestion you can also try restore process and check whether you can fix this problem or not. You can restore your phone in following ways.
Connect your iphone -> take backup of all your data -> now format your iphone normally -> open iTunes application -> you can find restore button at right hand side, just click on it -> wait until restore process complete -> now disconnect your iphone -> now check whether you still have the same problem or not.

[Simond]

Just try to do following things to fix this problem.
1. Try to increase brightness of iphone.
2. Try to rest your iphone.
3. Try to restore your iphone using iTunes.
After performing above things if you still have the problem, then there is some serious problem happened to your iphone. In this case you must contact your nearest apple store to fix this problem.