Mobile Software Repairing Course

Lesson 1 • Display and Touch Systems

Covers LCD, OLED, and AMOLED panel technologies alongside touch digitizer layers. Links display type to repair approach and part sourcing.

Lesson 2 • Core Internal Components

Examines processors, RAM, storage chips, and power management ICs. Connects component function to common failure symptoms.

Lesson 3 • Battery and Charging Architecture

Explains lithium-ion and lithium-polymer cell chemistry, capacity ratings, and charging circuits. Prepares students for safe battery handling in later chapters.

Lesson 4 • Mobile Device Hardware Overview

Introduces the physical architecture of smartphones and tablets. Establishes component vocabulary used throughout the entire course.

Lesson 1 • Workshop Organisation and Workflow

Establishes part organisation, screw mapping, and job tracking practices. An organised workflow reduces errors and speeds up repair turnaround.

Lesson 2 • Diagnostic and Measurement Instruments

Covers multimeters, DC power supplies, and USB testers used to measure voltage, current, and resistance. Accurate measurement is the basis of fault isolation.

Lesson 3 • Essential Hand Tools for Mobile Repair

Identifies screwdrivers, spudgers, tweezers, and opening picks required for disassembly. Correct tool selection prevents cosmetic and structural damage.

Lesson 4 • ESD Protection and Safe Handling

Explains electrostatic discharge risks and mitigation using wrist straps, mats, and grounded workstations. ESD damage is invisible and cumulative, making prevention critical.

Lesson 1 • Disassembling Budget and Mid-Range Devices

Addresses clip-based and screw-based enclosures common in budget devices. Highlights differences in build quality that affect disassembly risk.

Lesson 2 • Tablet Disassembly Procedures

Covers large-format device teardown including digitizer separation and battery access. Tablet construction differs significantly from smartphones in adhesive volume.

Lesson 3 • Adhesive and Fastener Removal Techniques

Covers heat application, adhesive softening, and screw removal sequences. Proper technique prevents cracked glass and stripped fasteners.

Lesson 4 • Reassembly Quality Checks

Establishes post-reassembly verification steps including fit, function, and seal integrity. Systematic checks catch errors before the device reaches the customer.

Lesson 1 • Touch Digitizer Calibration and Testing

Validates touch accuracy, multi-touch response, and edge sensitivity after replacement. Calibration ensures the repaired display meets original performance standards.

Lesson 2 • OLED and AMOLED Screen Replacement

Addresses the higher fragility and cost of OLED panels during removal and installation. Students learn pressure-sensitive handling and burn-in awareness.

Lesson 3 • Glass-Only Repair with OCA Lamination

Teaches glass separation from LCD using a separator machine and OCA optical adhesive relamination. This cost-saving technique requires precision to avoid air bubbles.

Lesson 4 • LCD Assembly Replacement

Covers removal and installation of LCD assemblies including frame separation and connector alignment. Proper handling prevents pressure damage to liquid crystal layers.

Lesson 1 • Charging IC and Power Path Faults

Traces no-charge and slow-charge faults to the charging IC, MOSFET, or power path components. Board-level diagnosis is introduced here as a precursor to advanced repair.

Lesson 2 • Power Button and Boot Faults

Diagnoses devices that fail to power on due to button failure, boot loop, or power IC faults. Systematic power-on sequencing guides fault isolation.

Lesson 3 • Charging Port Diagnosis and Replacement

Identifies charging port faults including bent pins, debris blockage, and flex cable failure. Port replacement restores charging and data transfer functionality.

Lesson 4 • Safe Battery Removal and Installation

Covers adhesive pull-tab removal, prying techniques, and connector handling for glued batteries. Safe removal prevents puncture, fire, and toxic gas release.

Lesson 1 • Recovery Mode and Factory Reset

Uses built-in and custom recovery environments to wipe, restore, and sideload packages. Recovery operations resolve software faults without full reflash.

Lesson 2 • Stock Firmware Flashing Procedures

Covers downloading verified firmware and flashing via manufacturer tools and Fastboot. Correct firmware matching prevents permanent device damage.

Lesson 3 • Mobile OS Architecture Fundamentals

Explains bootloader, kernel, recovery partition, and system partition roles. Understanding partition structure is essential for safe flashing operations.

Lesson 4 • ADB and Fastboot Command Usage

Introduces Android Debug Bridge and Fastboot for sideloading, flashing, and device interrogation. Command-line proficiency enables repairs unavailable through graphical tools.

Lesson 1 • Jumper Wire and Pad Repair Techniques

Restores broken traces and lifted pads using jumper wires and conductive adhesive. Trace repair extends board life when physical damage is localised.

Lesson 2 • Fault Isolation with Multimeter and Power Supply

Uses diode mode, resistance, and current draw measurements to locate shorts and open circuits. Systematic probing narrows faults to specific rails and components.

Lesson 3 • IC Reballing and BGA Rework

Covers BGA chip removal, pad cleaning, reballing with stencils, and reflow placement. BGA rework restores CPUs, RAM, and storage chips with failed solder joints.

Lesson 4 • Reading Mobile Schematics and Board Views

Teaches schematic symbol interpretation and cross-referencing with board view software. Schematic literacy is the foundation of all board-level fault tracing.

Lesson 1 • Intermittent and No-Signal Network Faults

Diagnoses dropped calls, no-service, and Wi-Fi failure caused by antenna, RF IC, or filter damage. Signal path tracing isolates faults to replaceable components.

Lesson 2 • Water Damage Assessment and Cleaning

Evaluates corrosion extent using visual inspection and electrical testing before cleaning. Ultrasonic cleaning and isopropyl alcohol treatment remove corrosion and restore conductivity.

Lesson 3 • Camera Module Diagnosis and Replacement

Diagnoses blurry, black, or non-detected camera faults at flex cable, connector, and module level. Camera replacement requires careful flex routing to avoid pinch damage.

Lesson 4 • Audio and Microphone Fault Resolution

Traces no-audio, distorted audio, and microphone failure to speaker, flex, or codec IC. Audio path tracing on schematics guides component-level resolution.