Android Question File transfer via bluetooth?

[rosippc64a]

Hi All,
I have an android pda, named ENGONUS. No problem, works good. But now I want to transfer files via bluetooth and encountered weird cases. I need to send files with extension csv.
I can send csv file from this android to PC (win10), from android file manager and from my app too.
I can send csv file from android to another android device. Good.
But I noticed, that I can't send csv file from win10 to this device. I searched a lot, but no result. Then I tested and I can send a pdf file from win10 to this pda. Interesting.
Then I took another android phone (xiaomi) and I can send pdf or image file to that pda but not a csv file.
So something in the PDA prevents receiving csv files. How can I solve this problem?
thanks in advance
Steven

 

[Erel]

You don't have any way to modify the OS behavior.

You can implement your own app + PC program and send the file yourself, with the SPP profile.

jSerial library

The jSerial library allows you to open and communicate with other devices through the computer COM ports. It can also be used to communicate with Bluetooth devices over a virtual com port. (jBluetooth library is now available: https://www.b4x.com/android/forum/threads/jbluetooth-library.60184/)...

www.b4x.com

 

[rosippc64a]

Thank you @Erel !