Want to check your phone's hardware, sensors and components, to make sure everything is operating properly? Need to fix your smartphone or tablet?
Use TestM app to get a full phone info and device status before you go into the lab!

Check your phone easily!
TestM is a FREE full hardware diagnostic app available for your smartphone and mobile device. Use TestM to check your phone info & specs, get a full report to repair just what you need to and no more. Create accurate online certificates to buy or sell your phone.

The Most Accurate & Easy Mobile Tester App
• Pinpoint problems with your phone, tablet or smart device
• 20+ comprehensive tests for all aspects of your device
• Compatible with more than 14,000 iOS devices!
• Verify you’re not buying a stolen phone with the IMEI check
• Make sure device is unlocked and ready for use in your country
• Supports over 20 languages

Hardware Check and Report for your Device
Complete the phone IMEI check and receive a full status report online, and within minutes, get an accurate objective report with all your phone info, that can be repair your phone.
TestM reports are easy to understand, simple to produce, and available online anywhere, anytime, for any smartphone or mobile device and you can also set reminders to check your device every time you like.

List of Tests Included in the app:
• Screen test: Touch Screen, 3D touch
• Sound test: Speakers, Earpiece, Microphone, Headphones
• Motion: Gyroscope, Accelerometer, Compass
• Connectivity test: WiFi, Bluetooth, Cellular, GPS
• Hardware test: Light Sensor, Charger, Vibration, Proximity Sensor, Fingerprint Sensor
• Camera test: Front Camera, Back Camera, LED Flash

Find Repair Shops
Search for and locate repair shops nearby. Save time and money and only fix what you know is broken. Thanks to TestM you'll know exactly what's need to be fixed on your iOS device and you won’t be wasting time and money anymore on your phone or tablet.

For questions & support:

What’s New

Version 3.1.6

Crash fixes

Ratings and Reviews

4.5 out of 5
957 Ratings

957 Ratings

Matty Massaj ,

The BEST seriously

I use this app on this iPhone and my iPad and I also use it on my Samsung Galaxy A50. It does everything the details and description says. I use it on all devices at least once a week. Every Sunday to be honest. If this app had a subscription or in app purchase that needed to be purchased then I’d definitely be purchasing it. It’s so awesome that it does everything it does and the developer isn’t asking for money or donations (Most reasons for In app purchases is because the makers of these apps make nothing for publishing the app nor do they get compensated for all the equipment, software, and time spent making the app, so the app purchases are to normally help the developer out to either make another app or to help keep up maintenance on the one you got)

dpbrick ,

It’s pretty thorough

But... the ads become longer and longer the further through the tests you get. Gets pretty annoying by the end.

Also it’s not clear which tests you have passed and which you still need to do. It indicated my phone had passed all the tests, but as I looked down through the tests I realized there were several tests I had not performed yet.

Finally, the ambient light sensor test is really superficial. What you really want to know is whether or not the phone can successfully dim the screen as ambient light intensity decreases and vice versa. All it does is presumably check to see that the input from the sensor decreases when you place your hand over it.

Regarding the back camera test, I’d like to know how the person running the test would know when their face is fully framed when they have the screen turned around backwards so they can’t see it. That’s a two-person test to be sure.

The instructions for the compass test need to be clearer. While the animation shows how the test should be performed, the text of the instructions doesn’t explain you must first place the phone down on a flat surface, screen side up, and then flip it over, screen side down. So the people who are having trouble with that test are probably doing so because they are reading your instructions :-).

Still, for free, it’s a pretty good app and quite thorough.

Developer Response ,

Thank you very much for the feedback!
First, we will explain that the advertisements allow us to offer the free application tests.
There is a paid version where there are additional tests and no advertisements.
With regard to the tests, you seem to have started the automatic test and therefore the screen presented you with tests that were not done. Not all tests are still in automatic testing.
For the rear camera test, the application makes a sound when performing the test, so the user can conclude that the test is complete.
We will check the compass check instructions, thank you very much.
We continue to improve and streamline the various application tests.
We'd love to know what type of device you're using.
Thank you very much for the constructive criticism! We'd like to hear from you again.
For further questions you can contact us at

iBridget ,

Great app, a must have

Agree with other review, this app is a keeper. Just bought a used iPhone and checked all functionality with this app. The only thing that didn’t pass were the earphones, but I think that is because these are the new connections on the headphones that now have lightning connection instead of the older plug into headphones port type. So that function could use an update from developers but otherwise this app is top knotch! Recommend to all!

Developer Response ,

Hi, We at TestM are doing our best to be the most efficient smartphone testing app, we have upgraded that future for more advanced phone, thank you for your constructive feedback. TestM Team


Veesto ltd
125.9 MB

Requires iOS 11.0 or later. Compatible with iPhone, iPad, and iPod touch.


English, Arabic, Catalan, Czech, Danish, French, German, Hebrew, Hindi, Italian, Japanese, Korean, Polish, Portuguese, Russian, Simplified Chinese, Spanish, Traditional Chinese, Turkish

Age Rating


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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