HTC Smart Quick Start Manual page 6

 Quick start guide
After installing the SIM card and battery and charging
the battery, you are now ready to turn your phone on
for the first time. Press and hold the END CALL/POWER
button to turn it on.
Read on and start exploring what you can do with your
phone.
5 Put the back cover on
Line up the bottom of
the back cover with the
two small openings at the
bottom of the phone, and
then gently push the back
cover down. When you hear
a click, it's secure.
6 Charge the battery
Connect the USB connector
of the power adapter to
the phone, and then plug
in the power adapter to an
electrical outlet.
It will take about three hours
for the battery to be fully
charged.