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: 1/19
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.
TCL 20 R 5G
T767H
Warning:
 All features, functions, specifications, and other product information provided in this document,
including but not limited to the advantages, aesthetics, price, components, performance, availability
and capacity of the product are subject to change without notice.
 TCL will not be responsible for any damage to the product, injury or other safety issue caused by the
result of repair by an unauthorized service provider, user repair or unprofessional product repair.
 Any damage to the product resulted from an attempt to repair the product by any person or 3
rd
party
other than TCL authorized service provider will not be covered by warranty.

TCL 20 R 5G Specifications

General

Brand	TCL
Model	20 R 5G
Category	Cell Phone
Language	English

Summary

Precautions

Maintenance Preparation

Factory Reset

4.2. Factory Reset

Step-by-step instructions for executing a factory data reset on the device.

Software Update

5.1. Software update by FOTA

Describes the Firmware-Over-The-Air (FOTA) method for wirelessly updating device software.

5.2. Software update by using Mobile Upgrade tool

Details the process of updating software using a dedicated PC upgrade tool.

Troubleshooting

7.1. What should I do if my device reboots by itself?

Solutions for when the device restarts on its own without user intervention.

7.2. What should I do if my device system lags or freezes?

Steps to resolve issues where the device's system becomes unresponsive or slow.

7.3. What should I do if my device cannot charge or charges slowly?

7.4. What should I do if my fingerprint unlock function works slowly or fails?

7.5. What should I do if my devices battery drains under normal use?

7.6. What should I do if my device auto powers off?

7.8. What should I do if my device cannot power on?