TCL 20 R 5G User Manual

Service Manual TCL Communication Technology Holdings Ltd.
Rev.: 1.0
TCL 20 R 5G T767H Service Manual V1.0
Page: 2/19
Confidential and proprietary information contained in this repair guide is subject to change without notice.
Distribution, transfer, copy of any content or data in this document without the written permission of TCL is strictly prohibited.
Content
1. Precautions ...................................................................................................................... 3
2. General Product Information .......................................................................................... 4
3. Maintenance preparation ................................................................................................. 5
3.1. Handset with at least 50% battery charges ............................................................... 5
3.2. Supported SD card and SIM card, 5V2A Charger, Type-C USB Cable ..................... 5
3.3. PC with below configurations to do software update by using PC tool. .................... 5
3.4. Backup the user data before repairing. There are two ways below for your
reference…………………………………………………………………………………………..5
4. Factory Reset ................................................................................................................... 6
4.1. Remove Google account before doing factory reset ................................................. 6
4.2. Factory Reset ........................................................................................................... 6
4.3. Recovery mode......................................................................................................... 6
5. Software Update ............................................................................................................... 8
5.1. Software update by FOTA ......................................................................................... 8
5.2. Software update by using Mobile Upgrade tool ........................................................ 8
6. Function Test with Support Centre ............................................................................... 11
7. Troubleshooting ............................................................................................................. 13
7.1. What should I do if my device reboots by itself? ..................................................... 13
7.2. What should I do if my device system lags or freezes? .......................................... 13
7.3. What should I do if my device cannot charge or charges slowly? ........................... 13
7.4. What should I do if my fingerprint unlock function works slowly or fails? ................ 14
7.5. What should I do if my device’s battery drains under normal use? ......................... 14
7.6. What should I do if my device auto powers off?...................................................... 14
7.7. What can I do if my device heats up? ..................................................................... 15
7.8. What should I do if my device cannot power on? ................................................... 15
8. Contact of TCL hotline and service centers ................................................................ 15
9. Explode View .................................................................................................................. 16
10. Split View ........................................................................................................................ 17

TCL 20 R 5G Specifications

General

Cables included	USB
AC adapter power	10 W
AC adapter included	Yes
Processor cores	8
Processor model	Dimensity 700
Processor family	MediaTek Dimensity
Processor frequency	- GHz
Processor architecture	ARM Cortex-A76+Cortex-A55
Processor boost frequency	2.2 GHz
RAM capacity	4 GB
Memory card slot type	Hybrid slot
Compatible memory cards	MicroSD (TransFlash), MicroSDHC, MicroSDXC
Maximum memory card size	1024 GB
Internal storage capacity	64 GB
Color name	Lazurite Blue
Form factor	Bar
Product color	Blue
International Protection (IP) code	IP52
Platform	Android
Google applications	Gmail, Google Chrome, Google Maps, Google Photos, Google Play, YouTube
Operating system installed	Android 11
Panel type	LCD
Screen shape	Flat
Pixel density	268 ppi
Display diagonal	6.52 \
Touchscreen type	Capacitive
Display brightness	500 cd/m²
Display resolution	720 x 1600 pixels
Native aspect ratio	20:9
Maximum refresh rate	90 Hz
Contrast ratio (typical)	1200:1
Flash type	LED
Image stabilizer	No
Rear camera type	Triple camera
Front camera type	Single camera
Maximum frame rate	30 fps
Video recording modes	1080p
Rear camera pixel size	1.12 µm
Rear camera aperture number	2.2
Front camera aperture number	2
Second rear camera pixel size	1.75 µm
Video capture resolution (max)	1920 x 1080 pixels
Rear camera resolution (numeric)	13 MP
Second rear camera lens elements	3-element lens
Front camera resolution (numeric)	8 MP
Macro camera resolution (numeric)	2 MP
Second rear camera aperture number	2.4
Rear camera field of view (FOV) angle	76.7 °
Front camera field of view (FOV) angle	80.6 °
Third rear camera field of view (FOV) angle	88.8 °
Second rear camera field of view (FOV) angle	85 °
Graphics card	Mali-G57 MC2
Talk time (3G)	- h
Battery voltage	5 V
Battery capacity	4500 mAh
Standby time (4G)	506 h
Battery recharge time	3.5 h
Continuous audio playback time	210 h
Continuous video playback time	10 h
USB version	2.0
USB connector type	USB Type-C
Headphone connectivity	3.5 mm
Speakers	Mono
Audio formats supported	AAC, ADPCM, AMR-NB, AMR-WB, APE, FLAC, MIDI, MP3, Vorbis, WAV
Video formats supported	H.264, HEVC, MPEG4, VP8, VP9
4G standard	LTE
3G standards	UMTS
SIM card type	NanoSIM
Wi-Fi standards	802.11a, 802.11b, 802.11g, Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac)
Bluetooth version	5.1
3G data rate (max)	42 Mbit/s
4G data rate (max)	390 Mbit/s
SIM card capability	-
Mobile network generation	5G
Subscription type	No subscription
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

Weight and Dimensions

Depth	8.99 mm
Width	75 mm
Height	164.3 mm
Weight	186 g