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Reliable screen diagnostic tool: touch grid, multi-touch, dead pixels & colors.
Test and inspect your smartphone display and touch performance with Touch Screen & Display Test — a lightweight, reliable, offline diagnostic utility built for device owners, technicians, and pre-owned phone buyers. Whether you suspect dead touch zones, erratic inputs, defective pixels, or color banding, Touch Screen & Display Test provides dedicated modules to evaluate your screen's physical condition. NO ADS. NO LOGIN. 100% OFFLINE. ZERO SENSITIVE PERMISSIONS. ================================== KEY DIAGNOSTIC MODULES ================================== TOUCH TESTS: • Touch Grid Test: Divide your display into a full-screen grid. Swipe across the glass to verify if every sector registers touch input properly. Uncovered zones highlight potential touch issues. • Multi-Touch Test: Detect simultaneous touch points. Verify your device digitizer capacity, track individual pointer IDs, and monitor real-time X/Y coordinates. • Touch Trail Test: Draw continuous paths across the panel to detect broken line trajectories, jitter, sudden coordinate drops, or dead edges. • Touch Point Crosshair: Inspect precise touch coordinates, active pointer IDs, and pressure levels (where hardware-supported) with real-time crosshair visualization. • Potential Ghost Touch Observation: A 30-second timed observation test. Place your device on a flat surface without touching the screen to monitor and record unexpected touch events. • Edge Sensitivity Test: Verify responsiveness along the glass perimeter near physical bezels and curved borders. DISPLAY & COLOR TESTS: • Solid Color Test: Full-screen solid colors (White, Black, Red, Green, Blue, Yellow, Cyan, Magenta, Neutral Gray) to check for backlight bleed, tinting, and color uniformity. • Dead Pixel Inspection: Visual inspection screens designed to help you spot stuck, dead, or hot pixels that remain discolored against solid backgrounds. • Gradient Quality Test: Smooth RGB, grayscale, and primary color gradients to observe color transitions, banding, and gamma fidelity. • OLED Burn-in & Retention Test: Specialized inspection patterns (neutral gray and high-wear silhouettes) to observe permanent burn-in or temporary image retention. DEVICE & SCREEN INFORMATION: • Display Specifications: Instantly view physical screen resolution, logical dimensions, pixel ratio, screen density, orientation, refresh rate (Hz), and OS version. GUIDED FULL DIAGNOSTIC FLOW: • Run a streamlined 8-step guided test covering touch and display modules in under two minutes. • Receive an aggregated Screen Health summary report. TEST HISTORY & REPORT SHARING: • Save diagnostic reports locally on your device. • Export and share formatted certificates to document screen condition before buying or selling a used phone. ================================== PRIVACY & TRANSPARENCY ================================== • 100% Offline: Operates seamlessly in Airplane Mode with zero internet access required. • No Account Required: No registration, no passwords, no cloud sync. • Zero Sensitive Permissions: No camera, location, storage access, or microphone. • Local Storage Only: Settings and test records remain strictly on your physical device. ================================== IMPORTANT DISCLAIMER ================================== Touch Screen & Display Test is a sensory testing utility designed to help users observe screen responsiveness and display artifacts. This app CANNOT physically repair damaged digitizers, cannot calibrate broken hardware, cannot restore dead sub-pixels, and does not provide official medical or laboratory certification. If touch issues or discolored pixels persist, please consult an authorized device service provider.