Top free and open-source software for mobile phone PCB layouts and schematics include KiCad, EasyEDA, Fritzing, and DesignSpark PCB. KiCad is a popular, cross-platform open-source option with comprehensive features. EasyEDA is a cloud-based tool that includes schematic capture, simulation, and PCB layout. Fritzing is known for its beginner-friendly approach, and DesignSpark PCB is widely used in the EDA community. 

Top free and open-source PCB design software

  • KiCad: 

    An open-source, cross-platform suite for electronic design automation (EDA) that includes schematic capture and PCB layout. It's a popular choice for its wide range of features and large community support. 

  • EasyEDA: 

    A free, web-based tool with integrated schematic capture, simulation, and PCB layout capabilities. It's accessible directly through a web browser. 

  • Fritzing: 

    A platform designed to help makers and hobbyists create their own PCB designs with a focus on ease of use and a visual, beginner-friendly interface. 

  • DesignSpark PCB: 

    A PCB editing tool used in EDA applications that is available for free. 

  • TinyCAD: 

    A program focused on drawing circuit diagrams, often referred to as schematics. 

  • CircuitMaker: 

    A free, community-driven tool from Altium for hobbyists and makers, offering schematic capture and PCB layout features. 

  • PCBWeb Designer: 

    A free CAD application for designing and manufacturing electronics hardware. 

  • LibrePCB: 

    A modern, open-source PCB design tool that is ideal for beginners and hobbyists. 

  • Upverter: 

    An online, collaborative EDA tool that integrates schematic capture and PCB layout. 

  • ZentiPCB: 

    A platform that offers a range of free software tools for PCB design.


DZKJ Schematics is a mobile phone repair tool that provides schematic diagrams and bitmap PCB layouts for a variety of smartphone brands like Apple, Huawei, Samsung, and Xiaomi. It helps technicians by acting as a map to understand the internal wiring, component locations, and connections within a phone. This tool is used for diagnosing and repairing mobile devices. 

  • Function: 

    DZKJ Schematics displays the internal circuitry and component connections of smartphones, similar to a circuit diagram or a blueprint. 

  • Components: 

    It includes both high-level schematics, which show the logical design, and bitmap layouts, which show the physical placement of components on the board. 

  • Purpose: 

    Technicians use the software to diagnose problems, troubleshoot issues, and guide their repairs by having a clear visual reference for the device's internal structure. 

  • Availability: 

    It is a professional software tool available through the official website, with some parts of the PDFs available for free.