Text to speech - no speech some phones

I made a simple app with text to speech.
This is a simple application that does not perform any external communication. It displays the names of Tai Ji form exercises, and when clicked, it pronounces the name in Chinese. On another page, there are Chinese numbers from 1 to 10, and when the button is clicked, it pronounces the number in Chinese.
I don’t understand why it doesn’t work on some phones.

So the app working: Poco NFC X3, Honor 90 lite, Huawei Mate 20 lite, Xiaomi Redmi 9c, Xiaomi Redmi Note 10s, Samsung F21, Blackview 7200, Huawei P30

No speech on: Samsung A52, Samsung Galaxy S22, Samsung Galaxy A53, Samsung A22, Samsung S21 FE, Huawei Y5P

The APK was shared with google drive. (not play store)

What could be their problem? Phone settings? Android version?

Hello @vizualcenter :wave:
Thank you for sharing all the details.
The sound from the text-to-speech block can vary for each device.
If you want to always hear the same sound you could record it and upload it to a database and then use the play sound block with the URL of the sound.

The main point was to avoid the digitization of all the text and individual insertion. It involves unnecessary data and extra work. :neutral_face: