Device Id: Phone Info & Tests

Device Id shows every detail about your phone — and what other apps secretly see about you. 1,000,000+ users trust it for device IDs, hardware tests, CPU monitoring and app privacy scanning.

WHY 1M+ USERS CHOOSE DEVICE ID
✓ The only device info app with a built-in privacy scanner
✓ Verify any phone before buying — instant hardware tests
✓ One-tap shareable spec report (great for selling phones)
✓ Compare your phone today vs last month — spot changes
✓ Free, no in-app purchases, no hidden upgrades

PRIVACY SCANNER — What Apps See About You
- Per-app permission audit
- See what other installed apps can read
- IDs that don't reset, IDs that do
- Stop being tracked without knowing

DEVICE INFORMATION
- Android ID, OAID (Open Advertising ID), GSF ID, IP address
- IMEI, Serial Number*
- Build, API level, Android version, kernel
- Manufacturer, model, brand, board, hardware
- Root detection, bootloader status, SELinux mode

HARDWARE TEST SUITE
- Multi-touch test & dead pixel scan
- Speaker, microphone test
- Vibration, camera flash test
- GPS provider check
- Sensor responsiveness

LIVE SYSTEM MONITOR
- Real-time CPU usage per core
- CPU temperature & thermal status
- Battery temperature trend
- RAM, storage, swap, thermal info

BATTERY HEALTH DETAIL
- Design capacity vs current capacity
- Charge cycle count (Android 14+)
- Health percentage & status badge
- Live voltage and temperature

NETWORK INFO
- Wi-Fi: SSID, RSSI (dBm), frequency, link speed, band (2.4/5 GHz)
- Cellular: carrier, network type (2G/3G/4G/5G)
- IPv4 and IPv6 addresses
- Public IP, location, ISP via ipinfo.io

DISPLAY INFO
- Refresh rate (Hz)
- Wide color gamut (P3) support
- HDR types: HDR10, HLG, HDR10+, Dolby Vision
- DPI bucket (xxxhdpi, xxhdpi, etc.)

STORAGE BREAKDOWN
- Internal storage used vs free
- External SD card stats (if present)

LIVE SENSORS
- Accelerometer, gyroscope, magnetometer
- Light, proximity, pressure
- Step counter
- See exact values updating in real time

INTERNET SPEED TEST
- Download speed in Mbps
- Ping in milliseconds
- Powered by Cloudflare

SNAPSHOT & COMPARE
- Save your phone state at any time
- Compare snapshots to spot changes
- Useful when buying used or before/after rooting

SHARE AS IMAGE
- One-tap full device report (image)
- Verified phone specs for selling, buying used phone
- Insurance / warranty proof

HOME SCREEN WIDGET
- Battery temp, RAM, storage at a glance
- Compact + medium sizes
- No app open required

Use cases:
- Selling your phone? Generate a verified spec report.
- Buying a used phone? Run hardware tests before paying.
- Curious about app privacy? See exactly what apps see about your device.
- Phone running hot? Check live CPU & temperature.
- Need an Android ID for setup? Tap and copy.

* IMEI/Serial only on supported Android versions and with permission.
* No data leaves your device. All checks run locally.

Free, no hidden upgrades.

Recent changes:
Added Traditional Chinese (Taiwan) language support, plus minor improvements.