Go to a major carrier (I use Tmobile) open a prepaid account load it with $20 or so. Give a fake name if needed and walk out with a sim card that you can use on your regular phone and just switch the sim cards when needed.
Pick up a Track phone at Wal-mart, get a phone that is good for texting.
Originally Posted by Tan Khan
That does help a lot.
However, this can be tracked by someone with legal or illegal access to cell phone company info. Every phone that uses a SIM card also has an IMEI ID number that is unique to the phone. If you put your hobby SIM in your real world phone, the cell phone company can link the two SIMS.