For lost migrants to the US, cellphones can be lifeline

More than 1,000 illegal immigrants are rescued as they cross into United States from Mexico each year. They are increasingly using cellphones to save their lives, US and Mexican authorities say. Previously, most migrants were unaware that they could use cellphones to call for help. Others were reluctant to carry them in case they were used by U.S. authorities to track them, or simply because they feared they would get stolen. US Border Patrol agents say rescues initiated by 911 calls have jumped fivefold in the past three years in the area south of Tucson, the main gateway for migrants slipping into the United States.