TECNO MOBILE LIMITED B1f User manual

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User Manual
Mobile Phone
Model：B1f
Hereby, TECNO MOBILE LIMITED
declares that this Mobile Phone is in
compliance with the essential
requirements and other relevant
provisions of Directive 2014/53/EU.

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Know your phone
1. Front camera
2. Volume key
3. Power key

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SIM/SD card installation
1. Power off mobile.
2. Refer to the following picture for SIM / SD card
installation.

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Charging the phone
You can charge your device using a charger or by connecting
it to the computer using a USB cable (comes with the
phone).
1. Please remind the front and back of the plug.
2. Use only TECNO charger and cables. Other chargers or
cables may damage the device. This will invalidate your
phone warranty.

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Operating Frequency Band (RF)：
E-GSM900: 880-915MHz (TX), 925-960MHz (RX)
DCS1800: 1710-1785MHz (TX), 1805-1880MHz (RX)
WCDMA BAND I: 1920-1980MHz (TX), 2110-2170MHz (RX)
WCDMA BAND VIII: 880-915MHz (TX), 925-960MHz (RX)
Bluetooth: 2402-2480MHz (TX/RX)
Wi-Fi: 2412-2472MHz (TX/RX)
Modulation mode：
GMSK, 8PSK (GSM)
BPSK, QPSK, 16-QAM (WCDMA)
GFSK, π/4-DQPSK, 8DPSK (BT)
GFSK (BLE)
CCK for IEEE 802.11b (WiFi)
OFDM for IEEE 802.11 g/n (HT-20)

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RF output power：
GSM900: 33dBm±2dB
GSM1800: 30dBm±2dB
WCDMA BAND I/VIII: 24dBm+1.7dB/-3.7dB
Bluetooth: 0-10dBm
Wifi: 14dBm+/-3.0dB
Specific Absorption Rate (SAR) Certification
THIS DEVICE MEETS INTERNATIONAL GUIDELINES FOR EXPOSURE
TO RADIO WAVES
Body parts Test value Test distance Limit
Head 0.352W/Kg 10g 0cm 2.0 W/Kg 10g
Body 0.691W/Kg 10g 0.5cm 2.0 W/Kg 10g

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CAUTION：
1. Use careful with the earphone maybe excessive sound pressure from
earphones and headphones can cause hearing loss.
2. Risk of explosion if battery is replaced by an incorrect type, dispose of
used batteries according to the instructions.
3. The product shall only be connected to a USB interface of version USB
2.0.
4. Adapter shall be installed near the equipment and shall be easily
accessible.
5. EUT Temperature: -10℃～+55℃.
6. Adapter1:CU-50AT
Input: AC100~240V 50/60Hz 200mA
Output: DC 5.0V 1.0A
Adapter2:CU-50ZT
Input: AC100~240V 50/60Hz 200mA
Output: DC 5.0V 1.0A
Adapter3:CU-52AT
Input: AC100~240V 50/60Hz 200mA
Output: DC 5.0V 1.2A
7. The device complies with RF specifications when the device used at 5
mm from your body, and the holder must not be of metal composition.
8. To prevent possible hearing damage, do not listen at high volume
levels for long periods.
9. Earphone and USB cable are shielded.

FCC Statement
1. 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.
2. Changes or modifications not expressly approved by the party responsible for compliance
could void the user's authority to operate the equipment.
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.
SAR Information Statement
Your wireless phone is a radio transmitter and receiver. It is designed and manufactured not to
exceed the emission limits for exposure to radiofrequency (RF) energy set by the Federal
Communications Commission of the U.S. Government. These limits are part of comprehensive
guidelines and establish 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 0.35W/Kg and when worn on the body, as described in this

Body-worn Operation
This device was tested for typical body-worn operations. To comply with RF exposure
requirements, a minimum separation distance of 15mm 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 antenna.
user guide, is 0.79W/Kg(Body-worn measurements differ among phone models, depending
upon available accessories and FCC requirements). The maximum scaled SAR in hotspot mode is
0.79W/Kg.While there may be differences between the SAR levels of various phones and at
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/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.
various positions, they all meet the government requirement for safeexposure. The FCC has
granted an Equipment Authorization for this model phone with all reported SAR levels evaluated
as in compliance with theFCC RFexposure guidelines. SAR information on this model phone is on
file with the FCC and can be found under the Display Grant sectionof http://www.fcc.gov/
oet/fccid after searching on
FCC ID:2ADYY-B1F Additional information on Specific Absorption Rates (SAR) can be found