144
Unable
to
charge
the
battery
1.
The battery may
discharge too much;
so it cannot be
charged until it is
connected
for
certain time.
2.
Its
performance
has worsened.
Unable
to
register to the
network
1.
Too weak signals or
strong interference.
2.
SIM card installed
properly?
Bad
contact or SIM card
damaged? If the
SIM card is broken,
please contact the
network operator to
replace it.
Summary of Contents for DST500
Page 1: ...1 USER MANUAL ...
Page 3: ...3 ...
Page 10: ...10 Below is the side of the mobile phone USB port ...
Page 11: ...11 Below is the back of the mobile phone Battery Cover Speaker Camera ...
Page 12: ...12 TV FM antenna ...
Page 13: ...13 3 Preparation before Use Sim 1 Sim 2 ...
Page 17: ...17 T flash card ...
Page 19: ...19 Battery Battery Cover ...
Page 36: ...36 network operator ...
Page 148: ...148 1 SIM1 slot Card 2 Slave card the card inserted in SIM2 slot ...