Master code and Nokia network problem

Problem 1:

Your Name: suraj bhandari
Your Email Address: bhandarisuraj2000@yahoo.com
Subject: unlock security code
Message: this is second hand phone i forgot to ask the security code,can you help me?my IMEI 356277014719920 THNKS.

Solve:If it is nokia phone then your master code is 2462020476 .

Problem 2:

Your Name: salam
Your Email Address: salam_mal@yahoo.com
Subject: n72 network
Message: n72 founding a n/w but no access....

Solve:There is a network ic problem with your phone, it must have got damaged get it repaired from a local repairman.
Otherwise try upgrading the phones firmware by going to nokia site and downloading a new update and then via data cable update the phone operating system.