SENDO D800 Operating instructions

D800 Troubleshooting
Problem Possible cause
Phone does not power on Battery empty
Battery contacts dirty
Phone does not charge Battery empty
Charger is incorrectly connected.
Battery How long should I charge the battery the first time?
I don’t get as much battery life
as I expected. The phone uses battery power when it is switched on even if it is not in a call. Making calls and playing with the different functions of the
phone will run down the battery faster. The stated battery life is
under optimum conditions.
“Insert SIM” is displayed
when I switch on the phone SIM card is incorrectly inserted or missing.
SIM card is damaged or dirty.
The PIN code is blocked 3 incorrect entries
The PIN2 code is blocked 3 incorrect entries
Poor display Low temperature
Can’t connect to network Weak signal
Invalid SIM card
Network not allowed
Possible corrective action
Fully charge the battery and then press .
Clean contacts on battery and phone with a dry cloth, attach battery, wait a few seconds and press
.
Charge for 2 hours. Don’t worry if the battery icon does not change immediately. Disconnect and try
again.
Check the mains socket and the connection to the phone.
12 hours continuous.
Charge the phone regularly.
Check that the SIM card is positioned correctly and that the metal clip is slid across and fits firmly over
the SIM card. Try again.
Visually check the SIM and clean the contacts with a dry cloth. Try again.
Enter the PIN unblocking code supplied with the SIM card. If you do not have this code, contact your
service provider.
Enter the PIN2 unblocking code supplied with the SIM card. If you do not have this code, contact your
service provider.
Move to a warmer place and let the phone warm up.
Move into an area of better coverage. If you are in a building, move towards a window.
Contact your service provider.
Try reselecting the network. Switch off and then back on.

Problem Possible cause
Can’t make/receive calls Weak signal
Phone is switched off
Check the number
Call key not pressed
Network is busy
Call barring or fixed dialing is activated
Not registered with service provider
No credit left on your prepaid card
Low earpiece volume Low setting
Low ringer tone Low setting
Cannot enter some words Wrong entry mode
“Message list full” is displayed
in the main screen Your SIM card memory is full of text messages; therefore you cannot receive any more messages.
Some features do not work Feature not supported by the operator or your subscription.
Some menus are missing There are restrictions on your SIM card or subscription.
Possible corrective action
Check that the service provider name is displayed on the screen. If not try to reconnect to the network.
Press for a few seconds.
Use the full area code and country code in the number.
After dialing the number you must press , Call.
If you hear rapid beeps, then the network is busy. Hang up and try again.
Check the fixed dialing settings. Otherwise check the call barring settings with your service provider.
After purchasing your phone, you may need to call your service provider to activate the line.
Recharge your credit.
Press the UP side key when you are in a call to increase the volume.
Go into the Sounds menu, select Volume and increase the setting.
Your phone has T9 Text Input (i.e. it guesses what words you are trying to enter). To enter a special
word, press repeatedly to change to normal multitap mode.
Go into the Read menu of the message menu and delete some of your messages.
Call your service provider.