Samsung has launched their Galaxy Note 4 at IFA 2014, Berlin and during their press conference Samsung announced that the Galaxy Note has a fast charging system which allows it to get charged from 0% to 50% in just 30 minutes.
Samsung seemed to be quite confident while boosting about their fast charging feature until they got a tweet from OPPO. It seems that OPPO is not that impressed by this technology as they have a better technology than this one. The tweet from OPPO came soon after Samsung’s press conference ended.
OPPO’s tweet mentioned that their Find7 can be charged from 0% to 75% in 30 minutes. Maybe this is what we call rapid charging. It seems that OPPO has a better rapid charging technology than Samsung and they are all up to boost about it. [source]