Inmates in US county jails (most county jails) have a Chirp phones / devices (also known as Churp phones) which they can use to send and receive texts / SMSs. Unfortunately it is quite expensive, $0.10 per incoming text / SMS and $0.10 per outgoing text / SMS.There is however a solution, USAchirp.com provides a way here to save $100's or even $1