Mobile and Offline Developer Guide

Mobile App Development with Lightning Web Components and LWC Offline
Create Mobile-Ready Components
Use Mobile Device Features in Mobile Apps
Offline Considerations and Limitations
Offline Environment Details
Use Salesforce Features While Offline
Development Tools and Processes
Understand the Mobile Development Cycle
Set Up Your Development Environment
Preview Components on Mobile
Validate Lightning Web Components for Offline Use
Develop Offline-Ready LWCs with the LWC Offline Test Harness
Test Harness Overview
Install the Test Harness App
Test Harness Prerequisites
Test Harness Compatibility
Download and Install — Android
Download and Install — iOS
Use the Test Harness App
Debug Lightning Web Components
Debug Mobile Components
Customize the Offline Experience for the Salesforce Mobile App
Use MCP Tools for Mobile LWC and Offline Development (Beta)
Salesforce Mobile App Generation (Developer Preview)
Quick Start Tutorials
PDF

Test Harness Prerequisites

To make full use of Test Harness, you need a complete working mobile development environment. If you haven’t set up your mobile development tools yet, see the following resources for guidance.

Salesforce DX Setup

You don’t need to set up both Xcode and Android Studio unless you want to use Test Harness in virtual devices on both platforms.

Note

Third-Party Developer Tools