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DBTEL DB-T302C Manual Do Utilizador

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Problem Solving 
38
 
Problem Solving 
Problem Solving 
1.  When you switch on your phone, 
“Insert SIM card” is displayed.  
a.  Check that the SIM card is correctly installed. 
b.  Ensure that the gold chip is not damaged or 
scratched. 
c.  Check the SIM card contact. If they are dirty, 
clean them with an antistatic cloth. 
 
2.  When your phone shows “PIN”, “PIN2”, 
“PUK”, “PUK2”, and “Barring code”. 
a.  Please contact your network service provider 
for the numbers. 
b.  Enter the wrong PIN code three times in 
succession, the SIM card will be blocked. 
c.  For the PUK code, check with your network 
service provider. 
 
3.  No connection to network. 
a.  Check the signal strength meter in the display. 
If the signal is weak, move to an open space 
or move closer to a window and try again. 
b.  Contact your network service provider for 
further detail. 
 
4.  Your correspondent cannot hear you. 
a.  Check that the network signal strength is 
normal and try again. 
b. 
Check that the microphone is unmuted.
 
 
c.  Holding the phone closer to your mouth. 
 
5.  The battery won’t charge. 
a.  Check that the charger is properly connected. 
b.  The message “Charging” will only be shown 
when you charge the battery with the handset 
switched off. 
 
6.  You can’t make calls. 
a.  Check the signal strength meter in the display. 
If the signal is weak, move to an open space 
or, if you are in a building, move closer to a 
window. 
b.  The network is busy, please try again later. 
c.  Check whether the call charge limit has been 
reached. 
 
7.  The battery drains faster than normal. 
a.  Check whether you are in an area of variable 
coverage. This uses extra battery power. 
b.  Ensure that the using environment is not in 
extreme temperatures. At extreme hot or cold 
temperatures, battery performance is 
significantly reduced. 
8.  The LI-ION battery was being charged 
overnight. 
It is strongly recommended that not to charge the 
battery for more than 24 hours. It may decline the 
battery performance or cause damage to the 
battery. 
 
9.  The headset starts beeping. 
The signal is weak or out of coverage.