lifetime. If left unused, a fully charged batterywill lose its charge over time.Always keep the battery between 15°C and25°C (59°F and 77°F). Extreme temperaturesreduce the capacity and lifetime of the battery.A device with a hot or cold battery may notwork temporarily.Accidental short-circuiting can happen when ametallic object touches the metal strips on thebattery, for example, if you carry a sparebattery in your pocket. Short-circuiting maydamage the battery or the connecting object.Do not dispose of batteries in a fire as they mayexplode. Dispose of batteries according tolocal regulations. Recycle when possible. Donot dispose as household waste.Do not dismantle, cut, open, crush, bend,puncture, or shred cells or batteries. If abattery leaks, do not let battery liquid touchskin or eyes. If this happens, immediately flushthe affected areas with water, or seek medicalhelp.Do not modify, remanufacture, attempt toinsert foreign objects into the battery, orimmerse or expose it to water or other liquids.Batteries may explode if damaged.Use the battery and charger for their intendedpurposes only. Improper use, or use ofunapproved batteries or incompatiblechargers may present a risk of fire, explosion,or other hazard, and may invalidate anyapproval or warranty. If you believe thebattery or charger is damaged, take it to aservice centre for inspection beforecontinuing to use it. Never use a damagedbattery or charger. Only use the chargerindoors.Additional safety informationEmergency callsMake an emergency call1. Ensure the device is switched on.2. Check for adequate signal strength. Youmay also need to do the following:• Insert a SIM card.• Remove call restrictions you haveactivated for your device, such as call barring,fixed dialling, or closed user group.• Ensure your device is not in an offline orflight profile.3. To clear the display, press the end key asmany times as needed.4. Enter the official emergency number foryour present location. Emergency callnumbers vary by location.5. Press the call key.6. Give the necessary information asaccurately as possible. Do not end the call untilgiven permission to do so.Important: Activate both cellular andinternet calls, if your device supports internetcalls. The device may attempt to makeemergency calls both through cellularnetworks and through your internet callservice provider. Connections in all conditionscannot be guaranteed. Never rely solely on anywireless device for essential communicationslike medical emergencies.