Wiko POWER U20 Guide D'utilisateur page 19

Tips for Reducing Exposure Levels
We recommend that you use your phone in good reception
conditions in order to reduce the amount of radiation received.
It is advisable to limit the amount of time you use the phone in
underground car parks and when travelling by car or train, etc.
Reception conditions are indicated by the bars that are
displayed on your phone: the more bars there are, the
better the reception quality.
We recommend that you use the hands-free kit to reduce
exposure to radiation.
To reduce the adverse effects of prolonged radiation
exposure, we advise teenagers to hold the phone away
from their lower abdomen, and that pregnant women hold
the phone at a distance from their stomach.
13.
Only qualified service personnel should repair your
device. If you give your device to non-qualified personnel
for repair, the phone will not be covered by WIKO's warranty.
14.
The IMEI code is the serial number used to identify your
device and for After-Sales support. There are several ways
of finding your IMEI code:
• Type * # 06 # on your mobile telephone's keypad.
• Refer to the packaging box that your telephone came in.
• Remove the battery from your device: on the back, you will
see a label with your IMEI code. (For non-removable batteries,
refer to the IMEI engraved on the telephone's rear casing).
Radio frequencies Band information
~
Frequency Band
GSM 1800/1900
GSM 850/900
UMTS B1/B2/B5/B8
FDD LTE B1/B3/B5/B7/B8/
B20/B28
TDD LTE B40
Standard
802.11b
802.11g
802.11n
BLUETOOTH
Bluetooth Version
EDR
LE
WWAN
Maximum output power (dBm)
31.50
34.00
24.30
23.70
23.70
WLAN
Frequency EIRP Power (dBm)
2.4~2.4835GHz 19.00
2.4~2.4835GHz 17.50
2.4~2.4835GHz 17.50
EIRP Power (dBm)
10.00
-1.50