Hello! Robovac here!

Hi! I’m RoboVacDev! I am new to this forum and just started working with MIT App Inventor.

I hope I feel welcome! Bye!

Hi There @RoboVacDev ! Nice that you started using MIT App Inventor, well you might get some problems in BT connection, so be careful!

What do you mean by this?

@Peter Actually, this has happened to me, if you’re using Android 12+ for testing or downloading your app, and if your app has a bluetooth connection, an error can show up saying unable to connect. It could be because of Android 12+ permissions or maybe something else. I still can’t solve this problem, so if you know on how to solve this, please message me.

So why not open a topic about your question with blocks etc?

Dear @Akshaj_Rarhi, I remember that you have already asked about the BT connection between Arduino and a phone. Since in that post there were no updates, I was supposing you've already solved, otherwise, as @Peter has said, please post again what are your concerns/troubles (i.e. Arduino code; AI2 .aia; brand of phone and its Android level).
In the meanwhile, may I suggest you to give a look to the FAQ (as @ABG linked to your original post) so to have the most updated information about BT (some old examples might probably work or older Android versions but could have problems with newer versions).
Best wishes.

Dear @uskiara , actually the problem is not yet solved, as i said, it could be because of app inventor problems or android 12+ permissions, everything is currently fine, just its the app inventor or my phone, thats it. And also, sorry for the late reply cuz I had an exam today.