Good man,Most people suggest buying prepaid SIM chips but Radium has the sense to realise this wouldn't protect you from LE as they are able to trace a phone's unique IMEI number. Your options are to buy cheap prepay phones and discard them at regular intervals or to buy a Smartphone such as one of the Android Galaxy series and use a voice/SMS encryption application so that even if LE do monitor his calls/texts they won't know what was said.Ideally you should advice using regular phones at all. If you need a secure VOIP application to speak to people I would recommend using Jitsi in conjunction with Phil Zimmerman (the inventor of PGP's) latest application Zfone. This app encrypts your conversation through a process known as elliptical curve cryptography which to cut a long story short is extremely secure.V.Quote from: radium1911 on April 16, 2012, 02:41 amPrepaid phones only.No texting.Switch phones every few weeks, and dispose of the old one well.