Phone Checker: Device Test

Phone Checker — Guided Phone Hardware Tests

Buying a used phone? Selling yours? Phone Checker runs a guided check of the whole device — screen, speakers and earpiece, multi-touch, refresh rate, microphone, sensors, cameras, buttons, GPS and battery — and builds a clear health report you can save or share.

Built natively in Kotlin with a clean, modern dark design — fast, lightweight and fully private. Every test runs on your device, and nothing from a test is ever uploaded.

QUICK CHECK OR FULL INSPECTION
• Quick Check runs 8 essential tests in about 2 minutes
• Full Inspection runs all 20 tests in about 5–8 minutes
• Mark each part Working, Not working, or Skip
• Hardware your phone does not have is reported as Not available — never as a pass
• Finishes with a complete Phone Health Report
• Perfect right before buying or selling a used phone

SCREEN TESTS
• Touch test — find dead zones on the digitizer
• Dead-pixel test — full-screen colours reveal bad dots or patches
• Multi-touch and refresh-rate check

SOUND & VIBRATION
• Loudspeaker and earpiece test
• Microphone test with a live loudness bar
• Vibration motor test

SENSORS
• Proximity, ambient light, accelerometer, gyroscope and compass
• Live readings so you can see each sensor respond

CAMERAS & MORE
• Front and rear camera live preview
• Flashlight, fingerprint sensor and volume buttons
• GPS test with live satellite count and location fix

BATTERY HEALTH
• Estimated health — how much of its original capacity the battery still holds
• Charge cycles, on phones that report them
• Live level, temperature, voltage and charging current
• See real-time values while plugged in and unplugged
• Says plainly when a phone does not report capacity, instead of guessing a number

PHONE IDENTITY CHECK
• Checks whether everything the phone says about itself agrees
• A renamed phone can change its model name, but not its chip or its core software
• For the models that get copied most, it also checks the memory, screen and chip
• Shows you exactly what does not add up, in plain words
• It never calls a phone fake. It shows the facts and lets you decide

FULL DEVICE INFO
• Model, chipset, RAM, storage, Android version and security patch
• Screen size, resolution and refresh rate
• Everything the phone reports about itself, in one place

SAVED CHECKS
• Every check you finish is kept on your phone
• Open an old report any time and share it again
• Each one shows the battery health from that day, so you can see it change
• Delete any check you do not want to keep

SHAREABLE HEALTH REPORT
• A clean report image with a pass/skip result for every part
• Save it to your gallery or share it on WhatsApp in one tap
• Great for used-phone listings — show buyers the phone really works

100% PRIVATE — ON YOUR DEVICE
• No account, no sign-in
• Test results and reports never leave your phone unless you share them
• Camera is preview-only; the mic reads a level and never records
• No location, no photos, no audio are ever uploaded

HONEST BY DESIGN
Phone Checker will not let a missing part be marked as working. If your phone has no gyroscope, or a test cannot reach the hardware, the report says so plainly instead of counting it as a pass — and components your phone does not have are left out of the score rather than held against it.

Phone Checker reports only what the phone tells software. Battery health is an estimate from what the battery itself reports, and not every phone reports it. It cannot detect water damage or motherboard faults — so it never claims a phone is "perfect." Use it as a fast, reliable check, not a guarantee.

PERFECT FOR:
✓ Checking a second-hand phone before you buy
✓ Proving your phone works when you sell it
✓ Testing a new phone the day it arrives
✓ Diagnosing a screen, speaker, mic or sensor problem
✓ Anyone who values a quick, private hardware check

Download now and know exactly what a phone can — and can't — do.

Official apps by APPNEST
🌐 https://appnest.live