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General| Display | 4.5 inches |
|---|---|
| Processor | 1.3 GHz Dual-core |
| RAM | 512 MB |
| Internal Storage | 4 GB |
| Expandable Storage | MicroSD, up to 32 GB |
| Rear Camera | 5 MP |
| Battery | 1730 mAh |
| Colors | Black, White |
| Chipset | Mediatek MT6572 |
| Front Camera | 0.3 MP |
| SIM | Mini-SIM |
| Weight | 150 g |
Visual overview of the phone's exterior design and key components.
Detailed specifications including size, weight, display, and technical standards.
Guidance on the manual's purpose and limitations for repair technicians.
Essential safety precautions and guidelines for performing repairs.
Information on how to access further product and repair details online.
Prerequisites and items required for the software upgrade process.
Diagram illustrating the physical connection between the device and PC.
Step-by-step guide to installing necessary USB drivers for the upgrade.
Detailed steps and procedures for performing software upgrades.
Instructions on using the 'Flash Tool' software for firmware upgrades.
Guidance on setting up the Flashtool for optimal download performance.
Detailed procedure for performing USB-based software upgrades.
Alternative method for upgrading software using an SD card.
Troubleshooting common issues encountered during software upgrades.
Overview of the phone's core architecture and functional blocks.
Detailed analysis of the baseband subsystem and its components.
Detailed schematic and analysis of the power management circuit.
Analysis of the circuit responsible for battery charging and management.
Explanation of the system's clock generation and distribution circuits.
Circuit analysis for flash memory and related data pathways.
Detailed analysis of the Radio Frequency (RF) subsystem.
Circuit analysis for the RF signal reception path.
Circuit analysis for the RF signal transmission path.
Analysis of external components and their associated circuits.
Analysis of the LCD display circuit and troubleshooting steps.
Circuit analysis and fault diagnosis for the phone's keypad.
Analysis of the vibration motor circuit and its functionality.
Circuit analysis for the audio receiver and troubleshooting common issues.
Analysis of the microphone circuit and troubleshooting for no sound.
Circuit analysis for headphone jack and related audio functions.
Analysis of the SIM card interface circuit and troubleshooting card recognition.
Analysis of the Micro-USB port and its data transmission functions.
Analysis of the SD card slot and its data connectivity.
Circuit analysis for the camera module and its data signals.
Troubleshooting for combined Bluetooth, Wi-Fi, FM, and GPS functionalities.
Analysis and solutions for common faults like sensor or touch screen issues.
