Forms Edit Text error on some devices

Hi, I have a problem with forms edit text, when I input text in some devices works fine in others shows only boxes, it's an encode error with uff-8?
how can I solve this?
I have tested in the same files and fields in two tablets a samsung galaxy tab4 and a tab S

It seems that devices have no fallback font in their own android distribution.
I suggest you to look at www.radaeepdf.com/support/knowledge-base...component&kbartid=25 .

I have already added droidsans font,droidsansfallback font and roboto regular font but the problem persist only with the samsung galaxy tab S, what can I do,can someone help me?.

Hi Radaeepdf team,

i also get same error on android version 5.0 and at 6.0 text is displayed
www.radaeepdf.com/forum/Android-developm...rrect-showing-squres

i changed the ttf file Roboto-Regular but still sqares are printed but its work under 5.0 and some device of 5.1.1
Please help