Samsung SGH-t509s - Manual (Page 11)

Section 1: Getting Started 7
Activating Your Phone
Section 1
3. Slide the SIM card into the SIM card socket so that the
card locks into place. Make sure the gold contacts of the
card face into the phone.
4. Place the battery so that the tabs on the end align with
the slots at the bottom of the phone (1). Press the
battery down until it clicks into place (2).
5. Replace the battery cover.
6. Make sure that the battery is properly installed before
switching on the phone.
Charging a Battery
Your phone is powered by a rechargeable Li-ion battery.
A travel adapter comes with your phone for charging the
battery. Use only approved batteries and chargers. Ask
your local Samsung dealer for further details.