USB-C Checker: HDMI Video Out

Find out if your phone can show its screen on a TV or monitor with a USB-C to HDMI cable, before you buy the adapter. USB-C Checker tests your phone's USB-C port for video output (DisplayPort Alt Mode, Samsung DeX), measures charging speed in watts and checks USB OTG, in one small, honest app. ✅ VIDEO OUTPUT CHECK (HDMI · DISPLAYPORT ALT MODE · DEX) A USB-C port that charges is not always able to send video. Most checkers guess from one signal and get it wrong. USB-C Checker combines several: • Your phone model, compared with a list of phones known to support USB-C video output • The alternate modes your USB-C port advertises (DisplayPort Alt Mode), when your phone shares them • Your USB controller speed: video needs USB 3, a USB 2.0 port can't do it • Vendor DisplayPort settings and Samsung DeX You get one clear result: Supported, Probably supported, Probably not supported, or Unknown. When the information isn't reliable, we say Unknown instead of guessing "not supported". 📺 CONFIRM WITH A CABLE Plug in a USB-C to HDMI adapter and a TV, monitor or projector. The card turns green the moment Android sees the screen and shows its resolution and refresh rate. That is real proof, not a guess. 🔎 CHECK ANOTHER PHONE Buying a new phone for a USB-C monitor setup? Type its name (Galaxy S24, Pixel 9, Xperia 1 V, Fairphone 5…) or a Samsung model code and see if it supports video output. ⚡ CHARGING SPEED METER • Live battery input power in watts, current in mA and voltage • Peak power, a live graph, battery level and temperature • Find the charger and cable that charge fastest, and the one that is slowing you down We are honest about limits: Android measures power at the battery, not at the wall, and phones slow charging above about 80%. The app tells you when a reading can't be trusted. 🔌 USB OTG CHECKER See whether your phone supports USB OTG (On-The-Go), then plug in a flash drive, keyboard, mouse, gamepad or camera to confirm it works. Every connected USB device is listed with its type. 🛠 USB-C PORT DETAILS For power users: USB-C data and power role, power mode (USB PD, 1.5 A, 3 A), USB-C and Power Delivery revision, alternate modes with their SVIDs, DisplayPort properties and DeX. Copy the full report to share it on a forum or with support. ❓ GUIDE & FAQ • Does my phone support USB-C to HDMI? • What is DisplayPort Alt Mode (DP Alt Mode)? • Which USB-C to HDMI cable or adapter should I buy? • Plugged in but no picture on the TV? • Does MHL work on USB-C phones? • Why is my phone charging slower than the charger's rating? 📡 NO VIDEO OUTPUT? If your phone can't output video over USB-C, no cable can fix that. The app points you to Wi-Fi screen mirroring instead. WORKS WITH Samsung Galaxy S, Note, Z Fold and Tab S (DeX), Google Pixel 8 and newer (Android 16), Sony Xperia 1 and 5, ASUS ROG Phone, Motorola Ready For, Fairphone 5 and every other Android phone with USB-C. Any HDMI TV, monitor or projector, USB-C hubs and docks. PRIVATE BY DESIGN No account. Your measurements stay on your phone. Wondering whether a USB-C to HDMI adapter will work with your phone? Check it in 5 seconds with USB-C Checker.

What's new in 1.1: • Bug fixes and performance improvements