Try this: prova_2.aia (3.3 KB)
and post a screenshot (I want to see with my own eyes). 
It does not work
Excuse me Anke, but if I upload the files from the media section and I see the list of names in the listpicker, why if I click on a name it is not transferred to the label? What does it have to do with android 11 or other.
In other phones everything works perfectly.
In my opinion it must all depend on a possible update or piece of update that has given this problem.
I'm about to give up 
, but one last try:
and post a screenshot after picking ...
Does the ListPicker open on the Note 7?
If so, then the ListPicker.AfterPicking event is not triggered.
I don't remember ever having such a problem on any of my many test devices or reading anything on the forums about it.
I check it on a Xiaomi REDMI NOTE 5 → no issue (as expected).
Thank you all for the help you are offering me, I understand your frustration.
Anke, In fact, even on note7 it has always worked,
But as written, strange things had been happening for a few days, even when it worked on note7.
It was already a few months that I used note seven via usb, for app tests and it had never given me problems.
Only from the day of a few weeks ago, when I wrote to you that I was detecting (app malfunction problems), some problems that I did not understand, blaming appinventor.
Maybe it will be note 7 (my mobile phone) to have problems of some kind, which I can't imagine, now I'll try to reset the phone to factory settings, we'll see what happens.
I have to find someone who has the same phone, I think that may be the only proof that can clarify everything.
But he should be willing to let me install the App, and whether it worked or didn't reset the phone and see if without updates, it would still work, I'll see.
I have reset the mobile to factory settings, and now everything is working great.
Don't ask me what happened before, I don't know.
I don't know why this was happening, but the fact is that it wasted time for me and all of you.
The only operation that I have carried out that could perhaps explain everything, is:
when I first tried to update the system, it took me to the card where it asked me to activate the Wifi, I tried to find an option to make it do it directly from the network, but not found it, so I gave up, because not having an ADSL line I would not have could connect it to Wifi.
But this morning it occurred to me that I could do it via the Huawey p8 lite's "portable wifi hotspot".
I activated it and connected to the p8 Wifi, making any updates.
Surely this was the operation that corrected the Redim note7 problems.
But of course the question remains, because days before, everything worked and then all of a sudden nothing worked anymore? BO !!!!!
The important thing is that everything is working now and I can work.
I imagine if this problem were repeated on all cell phones of the same type, it would be huge trouble for everyone.
I beg your pardon again, but it wasn't my fault. I hope it will be of use to others.
Excuse me again, but to me this behavior of the Android system of Note 7, however thinking about it, does not convince me.
I could have understood if, without an update, the app did not make me load texts from the disk, but here the operations that I could not carry out were internal to the app, so, how does an update or a system, prevent an internal option , like, in fact, transferring a text to a texbox from a listpicker.
I believe that no update can act within the app. so.
I don't know what you think, but for me, it's not clear and it seems impossible to me.