My Nokia 640xl has locked up and my 4 digit code will not work, how can I access my phone?

[WPCentral Question]

My Nokia 640xl has locked up and my 4 digit code will not work

How can I access my phone it has locked up and I can't access it

 

[Ed Boland]

Re: My Nokia 640xl has locked up and my 4 digit code will not work

Probably have to use the recovery tool

http://go.microsoft.com/fwlink/p/?LinkId=522381