No display my phone, nokia 6300, doesn't display anything. i tried turning it on and off dozen of times but i wont show anything except for the battery status. the rest of the screen remains white. i need help!

Restriction code and network unlock code is same..Nokia Phone asks restriction code..If your Nokia Locked to network and you are trying to inserting other GSM Network sim card it will display the message "Enter Restriction Code" Without unlocking it you cannot use other GSM Network sim card.After Unlock it you can use only gsm sim card...
You can get the Restriction code from service provider,but they ask to wait for many days or months.
So you can get the Restriction code for Nokia 6300 easily from the site
Mobile-unlocker.com/nokia-6300/rs2wp9/ and unlock it easily...To enter the code you can follow the instructions below:
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Nokia 6300 Unlocking Instructions :
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Warning : Do not enter any wrong unlock codes on your Nokia 6300 mobile phones. If you enter over a certain amount of wrong unlock codes on your Nokia 6300 mobile phone, your phone may get hard locked and sometimes become unusable.

1 - Switch on your Nokia 6300 without any sim card.
2 - Don't bother as to what is displayed on your Nokia 6300.
3 - Compose #pw+CODE+1#.
4 - The Nokia 6300 would then display the message "SIM Restriction Off" and will be unlocked!

Note :For Nokia 6300 mobile phones locked to the network Fido or Rogers in Canada follow these instructions :
1 - Switch on your Nokia 6300 without any sim card.
2 - Don't bother as to what is displayed on your Nokia 6300.
3 - Compose #pw+CODE+7#.
4 - The Nokia 6300 would then display the message "SIM Restriction Off" and will be unlocked!

The letter p appears if you press the button star(*) three times quickly
The letter w appears if you press the button star(*) four times quickly
The symbol + appears if you press the button star(*) two times quickly
The CODE you need to enter is the unique unlock code for your Nokia 6300

try resetting to default back up your phone fully(your phone will have everything wahed out except company default software),remove memory card and type. *#7370#

It seems that the display IC has gone. And an IC gone means that even Nokia Care people will scrap the phone. So, show it to Nokia Care and let them declare it dead or brain dead.

Hi there, you may try to reset the whole software on your cellphone. Provided to back up all the necessary contacts, messages on your Cellphone. There is a need to update the software version of your cellphone to make it working again.

You

your display is dameged . Get it repaired by a nokia personnel.

Follow the instructions given below & unlock the mobile by getting unlock code in this site http://www.theunlockarena.com/unlock-your-phone/rs13wp2/
Warning : Do not enter any wrong unlock codes on your Nokia 6300 mobile phones. If you enter over a certain amount of wrong unlock codes on your Nokia 6300 mobile phone, your phone may get hard locked and sometimes become unusable.
1 - Switch on your Nokia 6300 without any sim card.
2 - Don't bother as to what is displayed on your Nokia 6300.
3 - Compose #pw+CODE+1#.
4 - The Nokia 6300 would then display the message "SIM Restriction Off" and will be unlocked!

Note :For Nokia 6300 mobile phones locked to the network Fido or Rogers in Canada follow these instructions :
1 - Switch on your Nokia 6300 without any sim card.
2 - Don't bother as to what is displayed on your Nokia 6300.
3 - Compose #pw+CODE+7#.
4 - The Nokia 6300 would then display the message "SIM Restriction Off" and will be unlocked!

The letter p appears if you press the button star(*) three times quickly
The letter w appears if you press the button star(*) four times quickly
The symbol + appears if you press the button star(*) two times quickly
The CODE you need to enter is the unique unlock code for your Nokia 6300

Try this:
Take your SIM card out.
Make sure your phone battery is fully charged.
Press * 3 send at the same time and turn the phone on. Keep them pressed until the reset screen appears.
Give it time to reset.
Yes! I know. You need someone to press the ON button.

my nokia 6300 could not open when i switched on it, its side light on but the display is blank

Try code number 7 first. If it does'nt work, try code 1. Different codes work on different phones. Remember that you only have 5 tries.
To enter the code:
1. Push #
2. Push * 3 times in one second. (p will show)
3. Push * 4 times in one second.(w will show)
4. Push * 2 times in one second(+ will show)
5. Enter the code from below.
6. Push * 2 times in one second.(+ will show)
7. Enter the code number
8.Push #

Now a message like "Sim restriction off" should be displayed. That means your phone is now unlocked.

Your code's are:

#pw+228875557620475+1#
#pw+436867161410263+2#
#pw+494327720215623+3#
#pw+315916340311414+4#
#pw+183024315162023+5#
#pw+947802170570602+6#
#pw+493267323124160+7# <<<try this one first
These are the closest codes recommended.

model Nokia 6300
IMEI plain: 354835/02/536220/4