Samsung SGH-T519 - Manual (Page 15)

Section 1: Getting Started 11
Activating Your Phone
Section 1
3. When charging is finished, unplug the Travel Adapter
from the power outlet and disconnect it from the phone.
Important!: You must unplug the Travel Adapter before you remove the
battery from the phone during charging; otherwise, the phone could be
damaged.
Low Battery Indicator
When the battery is weak and only a few minutes of
talk time remain, a warning tone sounds and the