Operating Instructions

• To prevent the unintended disclosure of private information, always confirm the destination before
sending messages, file attachments, or any other communications, such as email.
• To prevent the unintended disclosure of sensitive information stored in the SD card, we recommend
using the product’s SD card encryption feature to encrypt the SD card (page 35).
• Before disposing of the product or handing the product over to a third party, remove the SIM card, SD
card, and any other accessories.
• Before disposing of the product or handing the product over to a third party, perform a factory data reset
(page 64) to erase any data stored in the product.
• Before using Wi-Fi or Bluetooth features, take appropriate action to secure your data.
Waterproof/dustproof
• The product is waterproof/dustproof when the interface cover and headset jack cover are closed, and
the battery and battery cover are attached. Therefore, keep water and dust away from product’s internal
components, accessories, and optional products.
• To prevent liquids, sand, dust, or any foreign objects from entering the product, always keep the battery
cover and battery clean and make sure to firmly close the cover after opening. Take care not to get
anything caught between the cover or battery and the product.
• If the product is exposed to water droplets, wipe them off with a dry, soft cloth and shake the product to
remove the water droplets. Next, remove the battery cover, and shake the product while holding down
the battery so that it does not detach to remove the water. Then, with the battery still attached, wipe off
the water droplets on the battery and back side of the battery cover, and dry thoroughly.
• Do not leave any water droplets on the product. Water droplets may cause the micro USB port or headset
jack to short circuit, or create smears on the screen.
• If the product is wet, wipe off the moisture before connecting with peripheral devices.
• Do not dry the product with an appliance or heat source such as a microwave oven or dryer.
• Accessories
Do not use in the rain or in very humid places such as bathrooms because the accessories are not
waterproof/dustproof. Stop use if they are worn on the body, because the inside may corrode due to
humidity from sweat and cause malfunction.
Maintenance
• When cleaning the product, make sure to turn it off.
• When cleaning the product, wipe it with a soft, dry cloth. An alcohol-based disinfectant may be used if
necessary.
– If the product is particularly dirty, thoroughly wring a cloth soaked in water, wipe off the dirt, and then
wipe with a dry cloth.
– Do not clean the product with solvents such as benzene, thinner, or strong alkaline detergent because
they may affect the surface of the product.
Battery
• The battery is a consumable item. Depending on the usage conditions, it may swell as it reaches the
end of its life. When the typical battery life of approximately one year or about 500 charge cycles is
exceeded, the battery deteriorates. If the battery begins to swell, or the amount of time it can be used
after a full charge becomes dramatically shorter, the battery should be replaced with a new one. Contact
your technical support representative.
• Do not touch the terminals of the battery. Failure to observe this may cause poor contact.
• When the battery is left installed in the product, it discharges electricity gradually in small amounts even
if the product’s power is off. If left for a long period (several months or more), the battery will over
discharge and its performance may deteriorate.
• Store the battery in environments with an ambient temperature of -20 °C to 35 °C (-4 °F to 95 °F). If the
battery is stored in other environments, battery performance and battery life may be reduced.
6 Operating Instructions - Reference Manual
Introduction