iChecker vs Dead Pixel Test

Is your iPhone actually healthy — or is a silent failure waiting to cost you? iChecker runs 39 forensic-level diagnostic tests to expose hidden damage, dead pixels, and failing sensors before they become expensive repairs. Whether you're verifying a used iPhone before buying, confirming a screen repair was done correctly, or keeping your daily driver at peak performance — stop guessing. Start knowing. INSTANT DIAGNOSIS Tap once. Get an instant A+ to F overall health grade across every critical hardware system. No technical expertise required — just a clear, honest answer about your device's true condition. 39 FORENSIC HARDWARE TESTS • Screen & Display — multi-touch precision, dead pixel grid scan, brightness uniformity • Internal Sensors — Face ID, gyroscope, accelerometer, magnetometer, proximity sensor • Connectivity — Wi-Fi signal strength, Bluetooth, cellular routing, GPS accuracy • Hardware — front & rear microphones, all camera lenses, physical buttons, speakers DIAGNOSTIC STREAK — PREVENTATIVE CARE iChecker features the first-of-its-kind Weekly Streak system for iOS. Get intelligent reminders to run routine hardware checks. Monitor your iPhone's health over time and catch components showing early signs of failure — before a minor issue becomes a costly breakdown. SHAREABLE PDF REPORTS Generate a beautifully formatted, timestamped PDF proof report summarizing every passed and failed test. Share it instantly as undeniable evidence of your device's condition — essential for anyone buying or selling a used iPhone. WIDGETS & PREMIUM THEMES Monitor your weekly diagnostic streak directly from your home screen with sleek iOS widgets. Customize the full app interface with premium themes: Cyber Teal, Aurora Purple, Neon Indigo, and Classic Blue. All 39 tests run locally on your device. No cloud uploads. No account required. Your diagnostic data never leaves your iPhone. Privacy Policy: https://local-scan-shield.lovable.app Terms of use: https://www.apple.com/legal/internet-services/terms/site.html

Check any iPhone or iPad screen before you buy, sell, or repair. Dead Pixel Test - Screen Check runs 10 display diagnostics on your device — dead pixels, burn-in, refresh rate, touch response, color accuracy, and more. All tests run locally. No data leaves your device. ▸ 10 DISPLAY TESTS Comprehensive diagnostics that cover every aspect of your screen. • Dead pixel detection — cycle through solid colors to spot stuck or dead pixels • Touch screen test — visualize touch points and map dead spots • Brightness test — verify min and max brightness performance • Color accuracy — compare sRGB swatches against reference values • P3 wide gamut — check if your display renders colors beyond sRGB • OLED burn-in detection — reveal ghost images and uneven aging • Screen uniformity — expose backlight bleed and uniformity issues • Refresh rate — requests several frame rates in sequence and measures what the display actually delivers • Response time — check motion clarity and spot ghosting and smearing • Pixel fix tool — attempt to revive stuck pixels with rapid color cycling ▸ PRE-PURCHASE INSPECTION (PRO) Buying or selling a used device? Run a curated check sequence adapted to the panel — OLED-only checks are skipped on LCD screens. Get a clear buyer verdict, then share the result as an image card or a PDF certificate. ▸ SMART & ACTIONABLE Not just raw data — results you can actually use. • Auto-detects OLED or LCD — shows only relevant tests for your display • Pass, fail, or warning verdicts — clear answers, not guesswork • Plain-language guidance — tells you what to do next • Shareable PDF reports — document screen condition for buyers or clients ▸ PRIVACY FIRST Your screen data stays on your screen. • All processing happens on-device • No accounts, no cloud uploads, no tracking • Works completely offline ▸ PRICING FREE: • 4 core tests — unlimited (dead pixel, touch, brightness, color accuracy) • Quick Check (4-test sequence): 3 runs per day • Last 3 test sessions saved SCREEN CHECK PRO Screen Check Pro unlocks every diagnostic, the Pre-Purchase Inspection, and unlimited saved sessions. Subscription options: Pro Monthly: $4.99/month Pro Annual: $24.99/year — includes a 7-day free trial Payment will be charged to your Apple ID account at confirmation of purchase. Subscription automatically renews unless canceled at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. You can manage and cancel your subscriptions by going to your App Store account settings after purchase. Terms of Service: https://displaytester.bulpara.com/terms Privacy Policy: https://displaytester.bulpara.com/privacy