User's Manual
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Avoid hot areas
The product should be placed away from heat sources such as radiators, heat registers, stoves, or
other products (including amplifiers) that produce heat.
Avoid wet areas
Never use the product in a wet location.
Avoid using your device after a dramatic change in temperature
When you move your device between environments with very different temperature and/or humidity
ranges, condensation may form on or within the device. To avoid damaging the device, allow
sufficient time for the moisture to evaporate before using the device.
NOTICE: When taking the device from low-temperature conditions into a warmer environment or
from high-temperature conditions into a cooler environment, allow the device to acclimate
to room temperature before turning on power.
Avoid pushing objects into product
Never push objects of any kind into cabinet slots or other openings in the product. Slots and openings
are provided for ventilation. These openings must not be blocked or covered.
Air bags
Do not place a phone in the area over an air bag or in the air bag deployment area. Store the phone
safely before driving your vehicle.
Mounting accessories
Do not use the product on an unstable table, cart, stand, tripod, or bracket. Any mounting of the
product should follow the manufacturer’s instructions, and should use a mounting accessory
recommended by the manufacturer.
Avoid unstable mounting
Do not place the product with an unstable base.
Use product with approved equipment
This product should be used only with personal computers and options identifified as suitable for
use with your equipment.
Adjust the volume
Turn down the volume before using headphones or other audio devices.
Cleaning
Unplug the product from the wall outlet before cleaning. Do not use liquid cleaners or aerosol
cleaners. Use a damp cloth for cleaning, but NEVER use water to clean the LCD screen.
Small children
Do not leave your phone and its accessories within the reach of small children or allow them to play
with it. They could hurt themselves or others, or could accidentally damage the phone. Your phone
contains small parts with sharp edges that may cause an injury or which could become detached
and create a choking hazard.
Repetitive motion injuries
To minimize the risk of RSI, when Texting or playing games with your phone:
• Do not grip the phone too tightly
• Press the buttons lightly
• Make use of the special features in the handset which minimize the number of buttons which have
to be pressed, such as message templates and predictive text.
• Take lots of breaks to stretch and relax.
Operating machinery
Full attention must be given to operating the machinery in order to reduce the risk of an accident.
Loud noise
This phone is capable of producing loud noises which may damage your hearing.
Emergency calls
This phone, like any wireless phone, operates using radio signals, which cannot guarantee
connection in all conditions. Therefore, you must never rely solely on any wireless phone for
emergency communications.
Regulatory agency identifications
For regulatory identification purposes, your product is assigned a model number of A621BL.
To ensure continued reliable and safe operation of your device, use only the accessories listed below
with your A621BL device.
Operating temperature range: 32°F to 131°F (0°C to 55°C)
NOTE: This product is intended for use with a certified Class Limited Power Source, rated 4.35 Volts
DC, maximum 1 Amp power supply unit.
Federal Communication Commission Interference Statement
This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection
against harmful interference in a residential installation. This equipment generates, uses and can
radiate radio frequency energy and, if not installed and used in accordance with the instructions,
may cause harmful interference to radio communications. However, there is no guarantee that
interference will not occur in a particular installation. If this equipment does cause harmful
interference to radio or television reception, which can be determined by turning the equipment off
and on, the user is encouraged to try to correct the interference by one of the following measures:
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and receiver.
Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
Consult the dealer or an experienced radio or television technician for help.
POP 3-5.5 4G_A62BL-TF_USA_QG_20151008.indd 30-31 10/9/2015 1:57:18 PM