how to monitor another persons phone calls and listen to their conversation

The issue of Spying on other people's mobile phone calls has been a
fantasy for many people. especially Parents who want to know whom
there children are taking to, couples who are too suspicious of
another and want to track their calls, employees who want to know
their boss business plans, security, intelligent and law enforcement
agents trying to get information from a suspected criminal, an
intruder trying to steal information from his victim etc. This article
will describe how this spying is performed. However be
advised that mobile phone spying is illegal in most countries and you
need special permissions to do this. The purpose of this article is
not to tell you how to intercept other people mobile or cell phone
calls, but better inform you about the tactics used by hackers so that
you can make your phone calls private and secured. Please read my
updated post on How to record phone conversation of any cell phone.

Lets start it straight up,
The person's phone and your phone must have credit(atleast N100.00)..
This can be done early in the morning or midnight when network is free.
To activate,just pick persons phone and enter following
code:**61*your fone no# (send).whenever they call the person's line,
your phone will vibrate as well and display call forwarding .Wait for
the person to pick the call,then you will begin to listen to their
dissusion.
To opp out of this setup enter ##002# on your phone and send.