Samsung A640 - Manual (Page 46)

24 Section 2A: Your Phone: The Basics
Using Your Phone’s Battery and Charger
Sprint- or manufacturer-approved batteries and accessories
can be found at Sprint Stores or through your phone’s
manufacturer, or call 1-866-343-1114 to order. They’re also
available at
www.sprint.com – click the Wireless link under
“Personal,” and then click Accessories under “Shop Sprint PCS
Online.”
Warning! Use only Sprint-approved or manufacturer-approved
batteries and chargers with your phone. The failure to use
a Sprint-approved or manufacturer-approved battery and
charger may increase the risk that your phone will
overheat, catch fire, or explode, resulting in serious bodily
injury, death, or property damage.