1. A method comprising: modifying a user interface (UI) rendering component of a mobile device to form a modified UI rendering component, wherein the modified UI rendering component is enabled to dynamically change a rendering of content based on geo-cultural information by performing operations comprising: receiving, at the mobile device, the content including a textual character, an encoding of the textual character using a first code point according to a character encoding standard; detecting, at the mobile device, that the mobile device is present at a geographical location, the mobile device being associated with a mobile user; selecting, at the mobile device, a variant selection rule, wherein the variant selection rule specifies a location based condition to select a variant corresponding to the textual character, wherein the variant conveys one of (i) a similar meaning in a different language than a language of the textual character, and (ii) has the same first code point but is associated with a different language than that of the textual character; selecting, at the mobile device, according to the variant selection rule, a variant mapping corresponding to the first code point, the variant mapping including the variant; and causing an on-the-fly change in a display buffer of the mobile device, the on-the-fly change comprising replacing, at the mobile device, in the rendering of the content, the encoding of the textual character with an encoding of the variant.