Well this works on computers, so maybe give it a try. Take out the battery, don't worry you will not lose any phone numbers. And just let it sit about two minutes and put the battery back in. Sometimes that will clear all the passwords. Otherwise you gotta take it to the phone service provider.
How to unlock memory card of nokia 3110c?
3110
how to format nokia 3110c phone memory ?
you can put a wi-fi in 3110c nokia
Did you mean the network unlock ?.If it so means you can unlock your Nokia 3110c by the service from the provider http://www.wickedunlock.com/nokia-3110c/rs11wp9/ .Here they provide the unlock code along with instruction .To get the code you need to submit the country name,network provider name and IMEI number
Press *#7780#
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yes
no
Finish what Hitler started
You can get restriction code for your Nokia 3110c mobile phone from Theunlockspot.com at reasonable price.Here they ask you to specify the country name,current network provider and IMEI number of your mobile phone.