Huawei P20 Maintenance Manual

EML-L29V100R001 Advanced Maintenance Manual V2.1
INTERNAL
2019-6-25
Huawei Confidential
Page 14 of 67
No.
Designator
Description
Symptom
Remarks
18
J2002
Front camera
connector
The front camera malfunctions.
19
U2101
Super switch
There are charging failures and power
leakage that lead to power-on failures.
There is no port, and the OTG and DP
headset cannot be detected.
Because there are
too many
integrated
functions, the
interface charging
failures are
coupled easily.
Check other
components
related to the
faulty function
first.
20
U2102
DP two-way
transfer switch
The DP cannot be detected, or only one
side can be detected. The analog
headset cannot be detected.
21
U2201
Audio Codec
chip
Various audio faults may occur.
22
U2301
Motor drive chip
There are failures. For example, the
motor does not vibrate or vibrates
continuously or abnormally.
23
MIC2301
Secondary
microphone
The microphone fails, especially in the
hands-free mode.
24
U2501
Speaker smart
PA
Faults, such as noise or no sound from
the speaker, occur.
25
U2505
BST5V power
supply chip
There is an NFC failure, or
SuperCharge cannot be detected.
26
U2601/U2604
Compass
The compass does not work properly.
27
U2602
Accelerometer
and gyroscope
sensor
Functions, such as step counting,
knuckle screenshot, and auto screen
rotating, are abnormal.
28
U2603
Laser
range-finding
sensor
The rear camera focuses slowly.
29
LED2601
Tricolor LED
The indicator does not work.
30
U2701
Infrared control
analog switch
The infrared function fails.
31
J2802
Dual SIM card
tray
SIM cards cannot be detected.
MicroSD cards are
not supported.
32
J2901
Main FPC
connector
The phone cannot be charged, the
speaker fails, the motor fails, the
microphone fails, smart cover mode,
Check the
connection of
fastened points or

Huawei P20 Specifications

General

Panel type	TFT
Screen shape	Flat
Pixel density	428 ppi
Second display	No
Display diagonal	5.8 \
Touch technology	Multi-touch
Touchscreen type	Capacitive
Display resolution	2244 x 1080 pixels
Native aspect ratio	19:9
Rounded display corners	Yes
Display number of colors	16 million colors
Processor cores	4
Processor family	Hi-Silicon
Processor frequency	2.36 GHz
Coprocessor frequency	1.8 GHz
Processor architecture	ARM Cortex-A73
Coprocessor architecture	ARM Cortex-A53
RAM capacity	4 GB
Compatible memory cards	Not supported
Internal storage capacity	128 GB
Flash type	LED
Rear camera type	Dual camera
Front camera type	Single camera
Video recording modes	1080p, 2160p
Rear camera aperture number	1.8
Front camera aperture number	2
Rear camera resolution (numeric)	12 MP
Front camera resolution (numeric)	24 MP
Second rear camera aperture number	1.6
Second rear camera resolution (numeric)	20 MP
4G standard	LTE
2G standards	GSM
3G standards	WCDMA
SIM card type	NanoSIM
Wi-Fi standards	802.11a, Wi-Fi 5 (802.11ac), 802.11b, 802.11g, Wi-Fi 4 (802.11n)
Bluetooth version	4.2
Bluetooth profiles	A2DP, APT-X
SIM card capability	-
Mobile network generation	4G
Subscription type	No subscription
USB version	3.2 Gen 1 (3.1 Gen 1)
USB connector type	USB Type-C
HDMI ports quantity	0
Multimedia Messaging Service (MMS)	Multimedia Messaging Service (MMS) is a standard way to send messages that include multimedia content to and from a mobile phone over a cellular network
Form factor	Bar
Product color	Blue
Themes	Wallpapers
Graphics card	Mali-G72 MP12
Personalization	Icons, Menu, Shortcuts
Personal info management (PIM)	Alarm clock, Calculator, Calendar, Notes
Speakers	stereo
Audio formats supported	3GP, AAC, APE, FLAC, MIDI, MP3, OGG, WAV
Video formats supported	3G2, 3GP, ASF, H.264, MKV, MP4, WEBM
Platform	Android
Operating system installed	Android 8.1
Talk time (3G)	- h
Battery capacity	3400 mAh
Battery recharge time	1.5 h
Interface adapters included	USB Type-C - 3.5mm

Weight and Dimensions

Depth	7.65 mm
Width	70.8 mm
Height	149.1 mm
Weight	165 g