http://translate.google.com can be used to enter text and translate it to another language.
There are online web sites that can convert a PDF manual to a Microsoft Word Document, and then that document can be placed into https://translate.google.com and translated from English to French.
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Does not appear to be a Cell Phones question.
https://www.splendide.com/WD2100XC_IOM3.pdf
http://translate.google.com can be used to enter text and translate it to another language.
There are online web sites that can convert a PDF manual to a Microsoft Word Document, and then that document can be placed into https://translate.google.com and translated from English to French.