Your phone must have been at the root, tuorial Root click Here
1; Download Hifont.apk here
2; Select the font.
2; Select the font.
3; Download
4; After download done > Use
5; And click Ok
Tested On Xiaomi Redmi 2(MIUI 6.6&7.1&7.2 Kitkat Device Build 2014817)
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