I can build .apk and download it on smartphone but application on smart phone cannot run

Bugs and Other Issues
1

how can I fix it or edit or how i build it

2

Please see this :
https://appinventor.mit.edu/explore/start-first-time#:~:text=Start%20the%20Designer%20and%20create,the%20top%20of%20the%20page.

3

Hi

  • Does your App run OK with the Companion?
  • Does the phone display an error message when you try to run the App?
  • Is your App Icon 96 x 96 pixels PNG format?