[ 139 ]Frequently asked questions (FAQ)21Q. How can I change the contrast of my phone’s display?A. The contrast of your phone’s display is fixed and cannot be changed.Q. Why doesn’t the battery last as long as the user guide says it will?A. A battery’s life greatly depends on how the battery is charged. Be sureto charge the battery for 24 hours so it will reach a 100% charge.• CARE AND MAINTENANCEYour phone is a product of superior design and craftsmanship and shouldbe treated with care. The suggestions below will help you to fulfill anywarranty obligations and allow you to enjoy this product for many years.When using your phone, battery, charger, or any accessory:• Keep it and all its parts and accessories out of the reach of smallchildren.• Keep it dry. Precipitation, humidity, and liquids contain minerals thatwill corrode electronic circuits.• Do not use or store it in dusty, dirty areas as its moving parts can bedamaged.• Do not store it in hot areas. High temperatures can shorten the life ofelectronic devices, damage batteries, and warp or melt certainplastics.• Do not store it in cold areas. When the phone warms up to its normaloperating temperature, moisture can form inside the phone, whichcould damage the phone's electronic circuit boards.• Do not attempt to open it. Non-expert handling of the device coulddamage it.• Do not drop, knock or shake it. Rough handling can break internalcircuit boards.• Do not use harsh chemicals, cleaning solvents, or strong detergentsto clean it. Wipe it with a soft cloth that has been slightly dampenedin a mild soap-and-water solution.
