Asus Zenfone 9 User Manual

74AppendixAppendixSafety informationCAUTION! Use of controls or adjustments or performance of procedures other than those specifiedherein may result in hazardous radiation exposure.ASUS Phone care• Use your ASUS Phone in an environment with ambient temperatures between 0 °C (32 °F) and35 °C (95 °F).• Use a cleaning cloth with water to wipe the surface of the phone. Do not apply alcohol, organicsolvents, detergent or use high-pressure sprayer to avoid damage.• Sudden changes in temperature can cause condensation or fogging on the lens. If this occurs,place the phone at room temperature or in a dry environment and wait until the moisture hasdried before using it. In cold areas, keep the phone in a warmer place such as an inside pocketcan prevent condensation.The batteryWARNING: Disassembling the battery by yourself will void its warranty and may cause serious harm.Your ASUS Phone is equipped with a high performance non-detachable Li-polymer battery.Observe the maintenance guidelines for a longer battery life.• Do not remove the non-detachable Li-polymer battery as this will void the warranty.• Avoid charging in extremely high or low temperature. The battery performs optimally in anambient temperature of +5 °C to +35 °C.• Do not remove and replace the battery with a non-approved battery.• Use only ASUS battery. Using a different battery may cause physical harm/injury and maydamage your device.• Do not remove and soak the battery in water or any other liquid.• Never try to open the battery as it contains substances that might be harmful if swallowed orallowed to come into contact with unprotected skin.• Do not remove and short-circuit the battery, as it may overheat and cause a fire. Keep it awayfrom jewelry or metal objects.