# Phone Tester: Dead Pixel Test — Sensor Tests & Health Check

> Sensor Tests & Health Check (iPhone/iPad app by Grima Hdez.)

- Source: https://appshunter.io/ios/app/phone-tester-dead-pixel-test/id6742501337 (this page in markdown: same URL + `.md`)
- Developer: [Grima Hdez](https://appshunter.io/developer/1741481582)
- Category: Developer Tools, Utilities
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 15.0 · 12 MB
- Languages: Arabic, Catalan, Croatian, Czech, Danish, Dutch, English, Finnish, French, German and 23 more
- Released: 2025-03-05
- Data updated: 2026-10-24

## What is Phone Tester?

Device Monitor: iDevice is a toolbox to check your iPhone or iPad. It shows your device specs and live memory, storage and battery readings, and lets you run quick hardware tests by eye and ear.

--- WHAT IT DOES ---

- Device info
Model, chip, RAM, storage, screen and iOS version in one place.

- Live readings
Battery level and charging state, memory, storage, connection type and thermal state, plus a live graph of the CPU used by this app.

- Hardware tests
Dead pixel test with solid colours, speaker tones, microphone level, bubble level, compass, barometer, proximity sensor, light meter (relative brightness), GPS accuracy, Bluetooth scanner, keyboard and gesture tests.

- Export and widgets
Export your device specs as a PDF and add Home Screen and Lock Screen widgets.

- Pro (optional subscription)
Removes ads and unlocks extra tools: decibel meter, gyroscope, magnetometer, metal detector, pedometer, altitude, thermal state, touch latency, haptics, NFC check, Face ID test, charging analyzer, more display tests, CSV and JSON export and PDF without watermark.

--- GOOD TO KNOW ---

It does not read battery health or charge cycles: iOS does not give them to apps (see Settings > Battery). Some tests need the right hardware, for example a barometer or a proximity sensor.

COMMON QUESTIONS
Does it need an account or internet?
No account. Everything is read from the device itself; only the optional latency test uses the internet.

What can it actually measure?
Whatever the device's own sensors expose: level, compass, magnetometer, barometer, gyroscope, ambient light (relative, not lux), microphone level, battery level, storage, memory and the screen's dead-pixel test.

Does it show battery health?
No. iOS does not let apps read battery health or cycle count. Check Settings > Battery > Battery Health.

Is the metal detector real?
It reads the magnetometer, the same sensor the compass uses. It reacts to ferrous metal and to magnets. It is not an industrial detector and it will not find gold.

Is the decibel reading accurate?
It is the microphone's reading, uncalibrated. Good for comparing one room to another, not for a legal noise measurement.

Does it change anything on my phone?
No. It reads and reports; it does not clean, optimise or modify anything.

Terms of Use: https://masaapps360.com/devicemonitor/terms/
Privacy Policy: https://masaapps360.com/devicemonitor/privacy/

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Device Monitor Pro Yearly | $2.99 | per year |
| Device Monitor Pro Weekly | $0.99 | per 7 days |
| Device Monitor Pro Monthly | $1.99 | per month |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Device Monitor Pro Lifetime | $3.99 | one-time |


## Is Phone Tester safe?

Not enough ratings yet to assess Phone Tester.

## Is Phone Tester legit?

Phone Tester: Dead Pixel Test appears to be a legitimate app. The AppsHunter Legitimacy Score for Phone Tester is 83 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 5 releases)

### 1.5.0 — 2026-10-13

New: Used-phone check. Test the screen, speaker, microphone, camera, touch, sensors, GPS and Bluetooth, mark Pass or Fail and share a PDF report.
Pro now comes as weekly, monthly, yearly or lifetime.
Fewer ads: none after a display test, and at most one every 5 minutes.
We removed the tools that showed made-up numbers or did nothing: Network Live and Network Speed, WiFi Analyzer, Network Security, Battery Tips, Storage Cleanup, Alerts, RAM Booster, Sound Frequency and Device Integrity Check. Storage now shows only real used and free space, the Pro screen lists only what Pro really unlocks, and the Gesture Test and Accelerometer readings are fixed.

### 1.4.0 — 2026-10-06

The App Store page carried a second, duplicate set of terms and privacy links pointing at a personal file host, and called this app "the ultimate tool" — neither belonged there. Both gone, and the description now answers the questions people actually ask: what the sensors can really measure, what the metal detector is reading, and how accurate the decibel number is.

In the app, the last broken placeholders in the translated texts are fixed.

### 1.3.0 — 2026-09-08

• Diagnostics, sensor states and hardware labels are now fully translated into 33 languages.
• Ads appear less often and never right after finishing a test.
• Small fixes and polish across the monitor dashboard.

### 1.2.1 — 2026-08-21

• Fixed a bug that could remove Pro access when the app was opened without a connection. If you paid, your subscription stays.
• Refunded purchases are now correctly revoked.

### 1.2.0 — 2026-08-10

• Improved translations across all supported languages
• Bug fixes and performance improvements

## Apps similar to Phone Tester

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [IDFA Viewer-Device Info Viewer](https://appshunter.io/ios/app/idfa-viewer-device-info-viewer/id6748586602) | — | Free | Developer Tools |
| [Sensor - Device Monitor](https://appshunter.io/ios/app/sensor-device-monitor/id6476280511) | 4.7 (57) | Free | Developer Tools |
| [Developer Toolbox: IDFA & ATT](https://appshunter.io/ios/app/developer-toolbox-idfa-and-att/id6743999372) | 5.0 (1) | Free | Developer Tools |
| [Device Monitor & Device Tester](https://appshunter.io/ios/app/device-monitor-and-device-tester/id6763496239) | 4.6 (17) | Free | Developer Tools |
| [Device Monitor Z: CPU x RAM OS](https://appshunter.io/ios/app/device-monitor-z-cpu-x-ram-os/id6450931919) | 4.5 (273) | Free | Developer Tools |
| [Device Info Toolkit](https://appshunter.io/ios/app/device-info-toolkit/id1529223828) | 4.3 (16) | Free | Developer Tools |

## More apps by Grima Hdez

- [Decibel Meter: Noise Level dB](https://appshunter.io/ios/app/decibel-meter-noise-level-db/id1501310833)
- [Text Reader Narrator: TTS](https://appshunter.io/ios/app/text-reader-narrator-tts/id1501312978)
- [Random: Number, Bingo, Dice](https://appshunter.io/ios/app/random-number-bingo-dice/id1501313323)
- [Drawing And Painting](https://appshunter.io/ios/app/drawing-and-painting/id1501400328)
- [Voice Recorder & To do list](https://appshunter.io/ios/app/voice-recorder-and-to-do-list/id1516155953)
- [Fit as - Register Your Steps](https://appshunter.io/ios/app/fit-as-register-your-steps/id1521810948)

All apps by Grima Hdez: https://appshunter.io/developer/1741481582

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-24.*