st.file_uploader recently would not accept file when using a mobile to visit app. I thought it was deprecated due to my Streamlit version but I still encounter same issue after haven upgraded my version.
It may be worth trying different browsers on your mobile device or testing on a different mobile device. Do you still experience the issue when switching to a new configuration?
Also, are you certain that you are uploading allowed file types (CSV or XLSX)?
@Charly_Wargnier I did tried using a different browser and it worked but chrome for some strange reasons do not permit file upload when using mobile device.
Thanks for pointing that out because my anticipation has shifted.
I thought it was my chrome configuration but after having tried using other mobile devices, I still encounter the unexpected behavior.