How Can I Intercept Cellular Phone Calls?

To intercept cellular phone calls, one can use a method known as phone cloning whereby incoming messages are intercepted and outgoing ones are sent as if from your own phone. This is done by making a copy of the sim card to be intercepted using sim readers that can read its cards crypto key. Then the sim card is transferred to another phone, an a firmware is installed onto the phone to be intercepted which picks up all the texts broadcast to a given channel instead of limiting to the ones addressed to you.