Questions & answers – Siemens M75 User Manual
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Questions & Answers
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Questions & Answers
If you have any questions on the use of your phone, you can contact us at
around the clock. As further help we
have listed below some frequently asked questions and answers.
Problem
Possible causes
Possible solution
Phone cannot be
switched on.
On/Off key not pressed long
enough.
Press On/Off key for at least 2 seconds.
Flat battery.
Charge battery. Check charging indicator in the
display.
Battery contacts dirty.
Clean contacts.
See also below under
“Charging error”.
Standby time is too
short.
Frequent use of organiser and
games.
Restrict use if applicable.
Fast search activated.
Deactivate speed search (page 96).
Display illumination switched on. Switch off display illumination (page 79).
Unintentional keystrokes (illumi-
nation!).
Charging error
(charge icon not
displayed).
Battery totally discharged.
1) Plug in charger cable, battery is on charge.
2) Charge icon appears after approx. 2 hours.
3) Charge battery.
Temperature out of range:
+5 °C to +40 °C.
Make sure the ambient temperature is right, wait
for a while, then recharge.
Contact problem
Check power supply and connection to the
phone. Check battery contacts and telephone
connection socket, clean them if necessary, then
insert battery again.
No mains voltage.
Use different mains power socket, check mains
voltage.
Wrong charger.
Only use original Siemens accessories.
Battery faulty.
Replace battery.
SIM error.
SIM card not inserted correctly. Check that the SIM card is inserted correctly
Dirty SIM card contacts.
Clean SIM card with a dry cloth.
SIM card with wrong voltage.
Use 1.8 or 3 V SIM cards only.
SIM card damaged
(e.g. broken).
Carry out a visual check. Have service provider
change the SIM card.