Upgrading to a new cell phone? Don’t throw out your old one! If you live in the U.S., send it to Call to Protect.
“Call to Protect is a national wireless phone collection drive designed to provide domestic violence victims and organizations with one of the most powerful tools in the fight against domestic violence... a wireless phone. The program is a partnership between the Wireless Foundation, the National Coalition Against Domestic Violence and Motorola who have worked together since 1996 to provide free phones to victims of domestic violence through the program.”
Free emergency airtime is donated by wireless service providers. Check the FAQ.