Nuu F4L User manual

Getting Started
With Your
4G LTE mobile phone
Model: F4L

3
The Keypad
Notification/Status
Bar/ Option
Back/Delete (Typing)
Navigation (Up/Down/
Left/Right)/Shortcut
wheel
Menu/Confirm
Answer Call/Phone
Dialer
End Call/Power On/
Off/Home Screen/
Press Volume Down
key together for
screenshot
Holding 1 for
Voicemail Call
Holding # key swaps
between General and
Silent mode/Delete
(Typing)
Holding * key for
recent tasks
Holding 0 key for
Camera
F4L Overview
Index
F4L Overview 3
Setting Up Your Phone 4
Safety Information 6
Certificate 13
Warranty Information & Registration 15
Customer Support 15
Volume control
Earpiece
LCD Screen
AUX-In/Headset jack
microUSB connector
Microphone
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Setting Up Your Phone
Follow these step-by-step instructions to set
up your F4L.
Power off the phone before inserting any cards!
Remove Back Cover
• Remove the back cover by
prying at the corner
Insert microSD™ Memory Card
(Optional)
•Remember to power off the phone and
remove battery before inserting memory card.
Insert SIM
• Orient SIM card to match diagram
on slot.
• SIM support 4G LTE connections.
Insert the Battery
• Align the battery contacts, then insert the battery
contact-first.
Replace Back Cover
• After installing the SIM card, memory card, and battery,
align the cover and snap it closed. Be sure to press
around all the edges to ensure a secure fit.
Charge/Sync
• Plug in the microUSB connector to charge the phone
or transfer data.
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Warning:
SIM cards are small enough to become a choking
hazard, so please keep them away from children
& pets. SIM cards are also quite delicate. Please
be careful when handling your card.

6 7
Safety Information
• This section contains important information about the operation
of your device, it also contains information about how to use the
device safely. Read this information carefully before using your
device.
Electronic device
Do not use your device if using the device is prohibited.
Do not use the device if doing so causes danger or interference
with other electronic devices.
Interference with medical equipment
• Follow rules and regulations set forth by hospitals and health care
facilities. Do not use your device where prohibited.
• Some wireless devices may affect the performance of hearing aids
or pacemakers. Consult your service provider for more information.
• Pacemaker manufacturers recommend that a minimum distance
of 15 cm be maintained between a device and a pacemaker to
prevent potential interference with the pacemaker. If using a
pacemaker, hold the device on the side opposite the pacemaker
and do not carry the device in your front pocket.
Protecting your hearing when using a headset
• To prevent possible hearing damage, do not listen at high volume
levels for long periods.
• Using a headset at high volumes may damage your hearing.
To reduce this risk, lower the headset volume to a safe and
comfortable level.
• Exposure to high volumes while driving may cause distraction and
increase your risk of an accident.
Areas with flammables and explosives
•
Do not use the device where flammables or explosives are stored
(in a gas station, oil depot, or chemical plant, for example).
Using your device in these environments increases the risk of
explosion or fire. In addition, follow the instructions indicated in
text or symbols.
• Do not store or transport the device in containers with flammable
liquids, gases, or explosives.
Traffic security
• Observe local laws and regulations while using the device. To reduce
the risk of accidents, do not use your wireless device while driving.
• Concentrate on driving. Your first responsibility is to drive safely.
• Do not hold the device while driving. Use hands-free accessories.
• When you must make or answer a call, pull off the road safely and
park the vehicle first.
• RF signals may affect the electronic systems of motor vehicles. For
more information, consult the vehicle manufacturer.
• Do not place the device over the air bag or in the air bag deployment
area in a motor vehicle. Doing so may hurt you because of the
strong force when the air bag inflates.
• Wireless devices may interfere with the airplane’s flight system.
Do not use your device where wireless devices are not allowed
according to the airplane company’s regulations.
Operating environment
• Avoid dusty, damp, or dirty environments. Avoid magnetic fields.
Using the device in these environments may result in circuit
malfunctions. Do not use your device during thunderstorms to
protect your device against any danger caused by lightning.
• Ideal operating temperatures are 0 °C to 35 °C. Ideal storage
temperatures are -20 °C to 45 °C. Extreme heat or cold may
damage your device or accessories.
• Do not expose your device to direct sunlight (such as on a car

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dashboard) for prolonged periods.
• To protect your device or accessories from fire or electrical shock
hazards, avoid rain and moisture.
• Keep the device away from sources of heat and fire, such as a
heater, microwave oven, stove, water heater, radiator, or candle.
• Do not place sharp metal objects, such as pins, near the earpiece or
speaker. The earpiece may attract these objects and result in injury.
• Stop using your device or applications for a while if the device
is overheated. If skin is exposed to an overheated device for an
extended period, low-temperature burn symptoms, such as red
spots and darker pigmentation may occur.
• Do not use your device’s camera flash directly in the eyes of people
or pets. Otherwise, temporary loss of vision or damage to the eyes
may occur.
• Do not touch the device’s antenna. Otherwise, communication
quality may be reduced.
• Do not allow children or pets to bite or suck the device or
accessories. Doing so may result in damage or explosion.
• Observe local laws and regulations, and respect the privacy and
legal rights of others.
Child safety
• Comply with all precautions with regard to child’s safety. Letting
children play with the device or its accessories may be dangerous.
The device includes detachable parts that may present a choking
hazard. Keep away from children.
• The device and its accessories are not intended for use by children.
Children should only use the device with adult supervision.
Accessories
• Using an unapproved or incompatible power adapter, charger or
battery may cause fire, explosion or other hazards.
• Choose only accessories approved for use with this model by the
device manufacturer. The use of any other types of accessories
may void the warranty, may violate local regulations and laws, and
may be dangerous.
• If the power cable is damaged (for example, the cord is exposed or
broken), or the plug loosens, stop using it at once. Continued use
may lead to electric shocks, short circuits, or fire.
• Do not touch the power cord with wet hands or pull the power cord
to disconnect the charger.
• Do not touch the device or the charger with wet hands. Doing so
may lead to short circuits, malfunctions, or electric shocks.
• If your charger has been exposed to water, other liquids, or
excessive moisture, only an authorized service center has the right
to inspect it.
Battery safety
• Do not connect battery poles with conductors, such as keys, jewelry,
or other metal materials. Doing so may short-circuit the battery
and cause injuries or burns.
• Keep the battery away from excessive heat and direct sunlight.
Do not place it on or in heating devices, such as microwave ovens,
stoves, or radiators. Batteries may explode if overheated.
• Do not attempt to modify or remanufacture the battery, insert
foreign objects into it, or immerse or expose it to water or other
liquids. Doing so may lead to fire, explosion, or other hazards.
• If the battery leaks, ensure that the electrolyte does not make
direct contact with your skins or eyes. If the electrolyte touches
your skins or splashes into your eyes, immediately flush with clean
water and consult a doctor.
• In case of battery deformation, color change, or overheating while
charging or storing, immediately stop using the device and remove
the battery. Continued use may lead to battery leakage, fire, or

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explosion.
• Do not put batteries in fire as they may explode. Damaged batteries
may also explode.
• Dispose of used batteries in accordance with local regulations.
Improper battery use may lead to fire, explosion, or other hazards.
• Do not allow children or pets to bite or suck on the battery. Doing so
may result in damage or explosion.
• Do not smash or pierce the battery, or expose it to high external
pressure. Doing so may lead to a short circuit or overheating.
• Do not drop the device or battery. If the device or battery is dropped,
especially on a hard surface, it may be damaged.
• If the device standby time shortens significantly, replace the
battery.
Cleaning and maintenance
• Keep the device and accessories dry. Do not attempt to dry it with
an external heat source, such as a microwave oven or hair dryer.
• Do not expose your device or accessories to extreme heat or cold.
These environments may interfere with proper function and may
lead to fire or explosion.
• Avoid collision, which may lead to device malfunctions, overheating,
fire, or explosion.
• Before you clean or maintain the device, stop using it, stop all
applications, and disconnect all cables connected to it.
• Do not use any chemical detergent, powder, or other chemical
agents (such as alcohol and benzene) to clean the device
oraccessories. These substances may cause damage to parts or
present a fire hazard. Use a clean, soft, and dry cloth to clean the
device and accessories.
• Do not place magnetic stripe cards, such as credit cards and phone
cards, near the device for extended periods of time. Otherwise the
magnetic stripe cards may be damaged.
• Do not dismantle or remanufacture the device and its accessories.
This voids the warranty and releases the manufacturer from liability
for damage. In case of damage, contact an authorized service
center for assistance or repair.
• If the device screen is broken in a collision, immediately stop using
the device. Do not touch or attempt to remove the broken parts.
Promptly contact an authorized service center.
Emergency calls
• The availability of emergency calls is subject to your cellular network
quality, service provider policy, and local laws and regulations. Never
rely solely on your device for critical communications like medical
emergencies.
Environmental protection
• The device and its accessories (if included), such as the power
adapter, headset, and battery should not be disposed of with
household garbage.
• Disposal of the device and its accessories is subject to local
regulations. Support proper collection and recycling.
Safety precautions
• Use of wireless hands-free system (headphone, headset) with a
low power Bluetooth emitter.
• Make sure the cell phone has a low SAR.
• Keep your calls short or send a text message (SMS) instead. This
advice applies especially to children, adolescents and pregnant
women.
• Use cell phone when the signal quality is good.
• People with active medical implants should preferably keep the cell
phone at least 15 cm away from the implant.

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Disposal and recycling information
This symbol on the device or on its packaging
indicates that the device (including its electrical
accessories) should not be disposed of as normal
household garbage. Do not dispose of your device
as unsorted municipal waste. The device should
be handed over to an authorized collection
center for recycling or proper disposal at the
end of its life.
Battery Caution
1. Use only NUU Mobile-approved batteries, chargers, and cables
to charge your phone. Unapproved chargers or cables can
cause the battery to explode or damage the device.
2. Use only NUU Mobile-approved batteries, chargers and cables.
Use of unapproved batteries, chargers and cables may cause
safety issues and the warranty will be cancelled.
3. You can recharge your battery many times, but all batteries
have a limited lifespan. If you notice a significant deterioration
in your phone’s battery life, you will need to purchase a
replacement battery for replacement. If the battery is built
in the phone, do not attempt to remove built-in batteries
and contact an authorized NUU Mobile service center for a
replacement.
4. Your phone may become warm after prolonged use or when
exposed to high ambient temperatures. If your phone becomes
hot to the touch, unplug the USB cable, disable non-essential
features, and avoid prolonged skin contact. Place your phone in
a cool location and allow it to cool down to room temperature.
5. Charging times may vary depending on the ambient
temperature and the remaining battery level.
6. Avoid using your phone when it is charging. Do not cover your
phone or the charger when it is charging.

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permitted levels of RF energy for the general population. The
guidelines are based on standards that were developed by
independent scientific organizations through periodic and
thorough evaluation of scientific studies. The standards include
a substantial safety margin designed to assure the safety of all
persons, regardless of age and health. The exposure standard
for wireless mobile phones employs a unit of measurement
known as the Specific Absorption Rate, or SAR. The SAR limit
set by the FCC is 1.6 W/kg. * Tests for SAR are conducted with
the phone transmitting at its highest certified power level in all
tested frequency bands. Although the SAR is determined at the
highest certified power level, the actual SAR level of the phone
while operating can be well below the maximum value. This is
because the phone is designed to operate at multiple power
levels so as to use only the power required to reach the network.
In general, the closer you are to a wireless base station antenna,
the lower the power output. Before a phone model is available
for sale to the public, it must be tested and certified to the FCC
that it does not exceed the limit established by the government
adopted requirement for safe exposure. The tests are performed
in positions and locations (e.g., at the ear and worn on the body)
as required by the FCC for each model. The highest SAR value for
this model phone when tested for use at the ear is 1.25W/Kg and
when worn on the body, as described in this user guide, is 1.27W/
Kg (Body-worn measurements differ among phone models,
depending upon available accessories and FCC requirements).
The maximum scaled SAR in hotspot mode is 1.32W/Kg. While
there may be differences between the SAR levels of various
phones and at various positions, they all meet the government
requirement for safe exposure. The FCC has granted an
Equipment Authorization for this model phone with all reported
SAR levels evaluated as in compliance with the FCC RF exposure
guidelines. SAR information on this model phone is on file with
the FCC and can be found under the Display Grant section of
http://www.fcc.gov/oet/fccid after searching on
FCC ID: 2ADINS2801L Additional information on Specific
Absorption Rates (SAR) can be found on the Cellular
Telecommunications Industry Asso-ciation (CTIA) web-site at
http://www.wow-com.com. * In the United States and Canada,
the SAR limit for mobile phones used by the public is 1.6 watts/
FCC Caution
Any changes or modifications not expressly approved by the
party responsible for compliance could void the user’s authority
to operate the equipment.
This device complies with Part 15 of the FCC Rules. Operation is
subject to the following two conditions:
(1) This device may not cause harmful interference.
(2) This device must accept any interference received, including
interference that may cause undesired operation.
Note:
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 or more 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/TV technician for
help.
Specific Absorption Rate (SAR) information:
Your wireless phone is a radio transmitter and receiver. It is
designed and manufactured not to exceed the emission limits
for exposure to radio frequency (RF) energy set by the Federal
Communications Commission of the U.S. Government. These
limits are part of comprehensive guidelines and establish

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FCC Hearing-Aid
Compatibility
(HAC) information
The device has been tested for hearing aid compatibility. This
device has an M4 and T4 rating. When some wireless devices
are used near some hearing devices such as hearing aids
and implants, users may detect a buzzing or humming noise.
Some hearing devices are more immune than others to this
interference noise. Wireless devices may also vary in the amount
of interference they generate.
The ratings for compatibility of digital wireless devices with
hearing aids are described in the American National Standards
Institute (ANSI) C63.19 standard:
M-Rating: Phones rated M3 or M4 meet FCC requirements and
are likely to generate less interference with hearing devices than
phone that are not labeled. M4 is the better/higher of the two
ratings. This phone is rated M4.
T-Rating: Phones rated T3 or T4 meet FCC requirements and are
likely be more usable with hearing devices’ telecoil than unrated
phones. T4 is the better/higher of the two ratings. This phone
is rated T4.
For information about hearing aids and digital wireless phones
FCC Hearing Aid Compatibility and Volume Control:
http://www.fcc.gov/cgb/dro/hearing.html
kg (W/kg) averaged over one gram of tissue. The standard
incorporates a sub-stantial margin of safety to give additional
protection for the public and to account for any variations in
measurements.
Body-worn Operation
This device was tested for typical body-worn operations. To
comply with RF exposure requirements, a minimum separation
distance of 10mm must be maintained between the user’s body
and the handset, including the antenna. Third-party belt-clips,
holsters, and similar accessories used by this device should
not contain any metallic components. Body-worn accessories
that do not meet these requirements may not comply with RF
exposure requirements and should be avoided. Use only the
supplied or an approved.

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Please visit our website for details on warranty information.
www.nuumobile.com
Warranty Registration
Warranty Information
Register your device
Thank you for choosing NUU Mobile. To receive helpful tips
and faster tech support, register your device online at
https://us.nuumobile.com/product-registration
Customer Support
Questions? Let us help. We’re here to support you.
Service Center:
Phone: Toll Free: 844-NUU-3365
U.S. hours: 9am-6pm ET,
WhatsApp: [phone]
Email: [email protected]
Online Chat: M-F 24 hrs, us.nuumobile.com/chat
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Learn more about NUU
Mobile products, features and
accessories at
www.nuumobile.com