Start with evidence
Webcam TestOpen your webcam locally to verify that the browser can access and display a live camera stream.
→Microphone TestCheck whether your browser can detect your microphone and receive live audio.
→Keyboard TestPress keys and verify that the browser receives the expected keyboard events.
→Left Right Speaker TestPlay left and right channel tones separately.
→Dead Pixel TestShow solid colors full-screen so you can visually inspect for dead or stuck pixels.
→Touchscreen TestDraw on the screen to verify touch/pointer coverage.
→Device families
Mac, iPhone, iPad, AirPods, displays.
DeviceOK does not publish a model page until it has model-specific data, a relevant test/diagnostic path, and authoritative sourcing. This brand hub is the safe entry point while the model knowledge graph grows.
Model-specific diagnostics
MacBook Air 13-inch (M3, 2024)A model-specific inspection center for the M3 MacBook Air's display, keyboard/trackpad input, camera, microphone, speakers and browser-visible connections before Apple Diagnostics.
→AirPods Pro 2Check left/right audio, frequency playback and microphone behavior when AirPods Pro 2 are connected to the current device, then separate Bluetooth/profile issues from earbud hardware symptoms.
→Apple iPhone 16Check the iPhone 16 browser-visible camera, microphone, speakers, touch and display behavior, then use the model's documented USB-C, DisplayPort and charging capabilities to avoid treating cable or charger limits as phone failures.
→MacBook Air 13-inch (M4, 2025)A model-specific MacBook Air M4 diagnostic center for display, keyboard, camera, microphone, speakers and charging checks, with Apple's current dual-external-display limit kept separate from cable, dock and monitor capability.
→MacBook Air 15-inch (M4, 2025)Test the 15-inch M4 MacBook Air's browser-visible hardware paths, then compare charging and external-display behavior with Apple's model-specific 70W fast-charge and dual-display documentation.
→Apple iPhone 15Inspect the iPhone 15's browser-visible screen, touch, cameras, microphones, speakers and charging/data expectations, with USB-C advice tied to Apple's exact USB 2 and DisplayPort specification.
→Apple iPhone 15 ProA model-specific iPhone 15 Pro center that distinguishes its USB 3 up-to-10-Gb/s data path from the USB 2 path on non-Pro iPhone 15 models while keeping charging, display and browser tests separate.
→iPhone 17Model-specific tests for iPhone 17 display, touch, cameras, microphones, speakers and USB-C behavior, with its USB 2 data ceiling kept separate from DisplayPort video output.
→iPhone 17 ProDiagnose iPhone 17 Pro user-facing hardware and its faster USB-C path without confusing USB 3 capability with actual cable, host or storage throughput.
→iPhone AirA browser-safe inspection center for iPhone Air touch, display, camera, microphone, speaker and USB-C symptoms before moving to native Apple diagnostics or service.
→MacBook Air 13-inch (M5, 2026)Inspect M5 MacBook Air display, keyboard/trackpad, camera, microphones, speakers, Thunderbolt ports and external-display expectations before Apple Diagnostics.
→MacBook Air 15-inch (M5, 2026)Model-specific inspection for the 15-inch M5 MacBook Air, including its built-in screen, user input, camera/audio path and Thunderbolt external-display chain.
→AirPods 4Check left/right playback and microphone behavior on AirPods 4 from the current device before changing Bluetooth profiles, app routing or assuming an earbud has failed.
→iPad (A16)Test iPad (A16) touch, display, camera and audio while keeping its USB-C data and external-display limits tied to Apple's documented specification.
→iPhone 16 ProInspect iPhone 16 Pro touch, display, camera/audio and USB-C behavior while keeping its ProMotion and high-speed USB capabilities tied to Apple's exact specification.
→iPhone 15 Pro MaxModel-specific checks for iPhone 15 Pro Max display, cameras, audio and USB-C, including its faster USB path rather than treating every USB-C iPhone as USB 2.
→iPhone 14Inspect a used or problematic iPhone 14 without assuming USB-C behavior: this model uses Lightning, with MagSafe and Qi charging limits documented separately.
→iPhone 14 ProCheck iPhone 14 Pro touch, 120Hz-class display behavior, cameras and audio while keeping its Lightning-era accessory path distinct from USB-C Pro models.
→iPhone 13 ProA source-backed inspection center for iPhone 13 Pro display/touch, camera and audio, including its 120Hz ProMotion behavior and Lightning connection generation.
→MacBook Pro 14-inch (M5 Pro, 2026)Diagnose the 2026 14-inch M5 Pro MacBook Pro around its 120Hz-class built-in display, three Thunderbolt 5 ports, HDMI and multi-display path before Apple Diagnostics.
→MacBook Pro 14-inch (M4, 2024)Inspect the 14-inch M4 MacBook Pro display, keyboard/trackpad, camera/audio and external-peripheral path with Apple model facts beside browser evidence.
→iPad Air 11-inch (M4)Check iPad Air M4 touch, display, camera and audio, with its 11-inch 2360×1640 panel and Apple Pencil support anchored to Apple's current specs.
→iPad Pro 13-inch (M5)Model-specific iPad Pro M5 checks for Tandem OLED display/touch, adaptive refresh, camera/audio and USB-C accessories before native iPadOS diagnostics.
→Magic Mouse (USB-C)Test pointer movement, clicks and scrolling on the USB-C Magic Mouse independently of Bluetooth pairing and macOS gesture configuration.
→Apple requirements and fit questions
What charger does iPhone 16 need, and how fast can it charge?iPhone 16 charges through USB-C. Apple states that fast charging can reach about 50% in around 30 minutes with a 20W-or-higher USB-C power adapter and USB-C cable. Apple also specifies MagSafe and Qi2 wireless charging up to 25W when the required higher-power adapter and compatible charger are used.
→Can iPhone 16 connect to a monitor over USB-C?Yes, when the display path supports the required video mode. Apple lists DisplayPort support on the iPhone 16 USB-C connector and specifies native DisplayPort video output over USB-C for video mirroring and video out. The same USB-C port is limited to USB 2 data rates, so video capability should not be confused with high-speed USB data capability.
→How many external displays can a MacBook Air with M4 use?Apple states that MacBook Air models with the M4 chip support up to two external displays simultaneously in addition to the built-in display, subject to the supported resolution and refresh-rate combinations. Closing the lid does not increase that number on M4 MacBook Air models.
→Can the 15-inch M4 MacBook Air use a 70W USB-C charger?Yes. Apple lists the 15-inch MacBook Air (M4, 2025) as fast-charge capable with a 70W USB-C power adapter. Apple also lists MagSafe 3 and two Thunderbolt 4 (USB-C) ports that support charging.
→Does iPhone 15 USB-C support video and USB 3 data?Apple specifies iPhone 15 USB-C for charging, DisplayPort video output and USB 2 data up to 480 Mb/s. It supports video output, but the non-Pro iPhone 15 is not a USB 3 10-Gb/s data device.
→Can iPhone 15 Pro transfer data at 10 Gb/s over USB-C?Apple specifies USB 3 data up to 10 Gb/s on iPhone 15 Pro, but the cable and connected device must also support that data rate. A USB-C cable that charges the phone is not proof of 10-Gb/s capability.
→Is iPhone 17 USB-C USB 3, and can it connect to a monitor?iPhone 17 supports DisplayPort video over USB-C, but Apple specifies USB 2 data up to 480 Mb/s rather than USB 3. A cable can therefore support video while file transfers remain limited by the phone's USB 2 data interface.
→Does iPhone 17 Pro support 10 Gb/s USB-C data?Yes. Apple specifies USB 3 data up to 10 Gb/s on iPhone 17 Pro's USB-C connector, alongside DisplayPort. Reaching that class still requires a host, cable and storage device that support the same path.
→Can MacBook Air M5 run two external monitors while its built-in display stays on?Yes. Apple states that M5 MacBook Air supports up to two external displays simultaneously in addition to the built-in display, subject to the documented resolution and refresh-rate combinations.
→Are the MacBook Air M5 USB-C ports Thunderbolt 4 at 40 Gb/s?Yes. Apple specifies two Thunderbolt 4 / USB-C ports on the 13-inch M5 MacBook Air with Thunderbolt 4 and USB4 up to 40 Gb/s, plus charging and DisplayPort support.
→Can iPad (A16) output 4K 60 Hz even though its USB-C data is USB 2?Yes. Apple specifies USB 2.0 data up to 480 Mb/s while separately supporting native DisplayPort output and one external display up to 4K at 60 Hz.
→Does iPhone 16 Pro support 10 Gb/s USB-C data?Yes. Apple specifies USB 3 data up to 10 Gb/s on iPhone 16 Pro over USB-C. The cable, host port, hub and storage still have to support the faster path; a USB-C cable that only carries USB 2 data will keep transfers at USB 2-class speeds.
→How fast can iPhone 14 charge with MagSafe?Apple specifies MagSafe wireless charging up to 15W on iPhone 14. Qi wireless charging is listed up to 7.5W. Wired fast charging uses the Lightning connector and a suitable USB power adapter/cable path.
→Does iPhone 13 Pro have a 120 Hz display?Yes. Apple lists ProMotion technology with adaptive refresh rates up to 120 Hz for iPhone 13 Pro. The panel does not have to remain at 120 Hz continuously because the refresh rate is adaptive.
→Do MacBook Pro M5 Pro ports support Thunderbolt 5?Yes. Apple specifies three Thunderbolt 5 / USB-C ports on the 14-inch MacBook Pro with M5 Pro, with Thunderbolt data rates up to 120 Gb/s in supported configurations plus USB4, charging and DisplayPort functions.
→How many external displays can a 14-inch MacBook Pro with M5 Pro run?Apple documents support for up to three external displays on the M5 Pro configuration, with specific resolution and refresh combinations depending on which Thunderbolt and HDMI outputs are used.
→Does iPad Pro M5 support 120 Hz?Yes. Apple lists ProMotion technology with an adaptive 10 Hz to 120 Hz refresh range on the 13-inch iPad Pro with M5.
→When the browser reaches its limit
Apple Diagnostics can test internal Mac hardware that a website cannot inspect, including potential issues with components such as memory, processor/logic-board related hardware and wireless components.
Open Apple Diagnostics for Mac