19.3.02 SL42-SL45-err-ger.fm U35 /SL45i- English, A31008-H4860-A1-3-7619 Troubleshooting 81 If you have any questions relating to the use of your device, we are available around the clock to help you at www.my-siemens.com/customercare. In addition, we have listed the most frequently asked questions and their answers below. Problem Possible causes Phone cannot be On/Off key not pressed for long switched on. enough. Flat battery Press On/Off key for at least two seconds. Charge battery. Check charging indicator in the display. Battery contacts dirty Clean contacts. Battery in total discharge (charge icon no longer displayed). Charge battery. It may take up to two hours for the charge icon to appear. Standby time too Frequent use of the organiser short. and games. Restrict use if necessary. Speed search active. Deactivate speed search (see p. 63). Display illumination on. Switch off display illumination (see p. 63). Unintentional keystrokes (and illumination). Activate key lock. Charging fault Battery totally discharged. (charge icon not Temperature out of range: displayed or +5 °C to +40 °C flashing) Contact problem No mains voltage SIM error Possible remedy S Charge battery. Make sure the ambient temperature is right, wait a while, then recharge. Check power supply and connection to the phone. Check battery contacts, clean them if necessary, then insert battery again. Plug in to a different socket or check voltage. Charger defective If the charger does not warm up, replace it. Wrong charger Only use original Siemens SL45i accessories. Battery faulty Replace battery. SIM card not correctly inserted Make sure that the SIM card is correctly inserted. The card carrier must be engaged (see p. 7). SIM card contacts dirty Clean the SIM card with a dry cloth. SIM card with wrong voltage Use 3 V SIM cards only. SIM card damaged Inspect the damage. Return SIM card to Service Provider.