hello Rose,
i didn’t clear cache since it’s not only on my phone.
before last night it was ok, but then i tried polylang plugin. deactivated it immediately since it blocked my homepage.
then i took a look at wpbakery settings and checked support of cyrillic fonts
http://prntscr.com/sdrken
now i unchecked it as it was before this trouble
also, i added myriad pro font and used it for the theme. didn’t check on my phone, only in the theme options preview. when i found about this issue today i removed all custom fonts and set for browser’s default.
that’s it