Check Phone - Điện thoại

A comprehensive solution to help you confidently inspect, assess, and detect any risks when buying a used iPhone or checking the condition of your current device. Built on the practical experience of leading hardware technicians, the application provides all the tools and in-depth knowledge to help you avoid refurbished devices, devices that have undergone repairs, devices with modified batteries, or devices with hidden iCloud locks.

HIGHLIGHTED FEATURES

1. 12-STEP TECHNICAL INSPECTION PROCESS
A detailed and scientific step-by-step process ensures users don't miss any important details:
- External inspection: Inspect bottom screws, screen bezel rubber gasket, SIM slot, back glass, and frame.

- Screen and display assessment: Check True Tone, touch sensitivity, color range, and ProMotion 120Hz refresh rate.

- Face ID and camera test: Lens, ultra-wide angle, telephoto optical zoom, OIS image stabilization, and 4K video recording.

- Audio and call test: Top speaker, bottom speaker, main microphone, and noise-canceling microphone.

- Connectivity and charging test: Fast charging, computer data transfer, Wi-Fi, Bluetooth, and cellular signal.

- Critical test: Instructions for resetting the device and reactivating it with a real SIM card to completely eliminate hidden iCloud, locked devices with hidden SIM card adapters, and remote management configuration (MDM).

2. DIRECT HARDWARE TESTING TOOLKIT
Integrated in-depth hardware tests directly on the device:

- Multi-touch drawing: Continuously draw across the screen and all four corners to detect dead pixels or erratic lines.

- Screen Dead Pixel Inspection: Displays the standard color range (Red, Green, Blue, White, Black) to detect reflective spots, color tinting, or screen lines.

- Multitouch Point Counting: Tests the ability to recognize multiple fingers simultaneously to evaluate the touch IC.

- Motion and Proximity Sensors: Measures real-time parameters of the gyroscope, accelerometer, magnetic compass, and ear-contact screen off sensor.

- Physical Utilities: Tests the Dual-Tone Flash system and Taptic Engine vibration motor by turning them on and off.

3. GUIDE TO DIAGNOSING 14 COMMON PROBLEMS
Provides identifying signs, risk levels, and standard market repair cost estimates:
- Differentiating between genuine screens removed from devices and aftermarket GX/JK screens with thick bezels.

- Warning: Screens with spliced ​​copper wires or crimped cable connectors are prone to recurring screen lines.

- Exposing the trick of entering serial numbers to activate a fake green battery indicator on the software.

- How to check if litmus paper turns red when the phone has been exposed to water.

4. DETAILED VIDEO LIBRARY
A system of close-up macro-angle instructional videos, allowing you to easily compare every detail of the screws, speaker membranes, SIM slot, and screen gasket of the original device.

5. 24/7 AI ASSISTANT FOR DEVICE ASSESSMENT
Instant, intelligent advice, answering all questions about hardware faults, analyzing test reports, and providing accurate valuation advice before you make a purchase.

Check iPhone - Your partner on every journey to choose a safe and quality phone.