My (Flashlight) app don't work for a person on Google Play

[Julian]

Hi,

I have publish an app (is an lamp torch) make with appinventor2 on playstore and a visitor have instal my app and rate me 1 star because the app don't work on here smartphone, i have test on 3 smartphone (samsung j3, a5 and oneplus3) and it work fine, so i don't unerstand.

The person send me an email with his model smartphone and version android but i don't know where to start to try debug the app to make succes on the smartphone of this person.

When does it happen to you how do you debug ?

Thanks

Best regard

[SteveJG]

A lamp app?  Does it use the device flashlight?  Not all phones have a flashlight.

Your app works on three devices.  Great.  You know what capabilities they have; do you know what hardware is present in the User's device?  Figure out what might be different in the user's device.  You can google the specs for the user's phone on the Web.

If you do not have the model and same operating system ti test on, debugging an issue like this could be impossible.  The app might be failing because it lacks crucial hardware, its system memory or storage memory is full etc.or the app uses a capability that is not available on the User's operating system.

Some developers use an emulator to test apps.  An emulator works well if the issue is not a hardware issue, that is you are testing for performance on different operating systems and screen sizes.

Good luck..

[Julian]

Thanks for your help ;)

Yes it use device flashlight of camera

I have the info for model and android version of the person :

model : archos 50 cobalt

android version : 5.1

I have take a look in specification of this smartphone, and it say : Back camera : 8 MP* AF + Flash LED, and in google image i see the led, so we can delete this problem ^^

For hardware i have found this :

• CPU : Mediatek MT6735P ARM Cortex A-53 @ 1.0GHz*4
• GPU : Mali T720 MP3
• RAM : 1 GB
• Internal Storage : 8 GB

What kind of emulator i can try in your opinion ?

I see that 1Gb ram is not huge for smartphone now.

[SteveJG]

You are actually asking if an emulator can simulate turning on a cellphone led.  None of them can.  Many developers mention GenyMotion as an all purpose emulator.  It may 

serve your purposes.  I do not use it.  It can simulate the responses of many different operating systems and screen sizes.

App Inventor has no Block capability of turning on a flashlight.  You used an extension so you might contact the developer of that extension directly for advice.

[Julian]

Thanks SteveJG !

I contact the developer of this extension.

Best regard