I recently purchased a tracphone at Wal-Mart. It was a cheap phone with double minutes for life of the phone.
It was easily activated within a few minutes and minutes were automatically doubled like they said. Haven't tried adding additional minutes though. The phone was only about thirty bucks and so far we have had good tone and quality service with the phone. We feel that the text messages are reasonable.
I have read reviews in the past with consumers who had a problem with the double minute issues.
Maybe I just got lucky on this purchase but with the double minutes it is a pretty decent phone.
Review about: Tracfone Phone Service.