The Kaf HaHayim on Women Wearing Tefillin
Kaf Hahayim Orah Hayim 38:7-9:
7) Women and slaves are exempt from Tefillin because it is a time-bound positive commandment. And even though we hold like Ribbi Akiva that nighttime can still be a time for Tefillin, nevertheless, Shabbat and Yom Tov are not times for Tefillin, which renders it a time-bound positive commandment. --- Rosh in Halachot Ketanot Hilchot Tefillin Siman 29, Beit Yosef, Levush, Taz 38:1, and see also in the Rosh for other reasons.
8) Ibid - Women and slaves are exempt from Tefillin etc. And that is also true according to the Ariza"l, and see the reason in Sod: Etz Hayim
9) Ibid in the gloss: And if women want to be stringent upon themselves, we protest against them. And so agreed the Birkei Yosef 38:1, check it out there. And check out the Rav [who wrote] Beit Hillel Z"L in Yoreh De'ah 182:2 who brought down the Targum Yonatan Ben Uziel in Ki Tetze on the verse "A woman shall not wear that which pertaineth unto a man" who translates it as "There should not be a garment of Tzitzit and Tefillin - which are vestments of man - on a woman". We see from here that not only is she exempt from Tzitzit and Tefillin, but she also transgresses this with a negative commandment. And the Petah Hadevir 38:2 brings him down, check it out there. Also check out the book Shomer Emunim Parshat Ki Tetze on the verse "A woman shall not wear that which pertaineth unto a man" and these are his words, "The words 'כלי גבר' in Atbash [is לכמ רשג, which] is the gematria of "זו תפילין" which is the Sod of the male world, and there is no proof from Michal bat Sha'ul who put on Tefillin." And the Yafeh Lalev 38:2 brings him down and writes, "That which he wrote that there is no proof from Michal bat Sha'ul, possibly he means that Michal bat Sha'ul was a wise woman who knew about herself that she had a soul from the male world, which is why 'And Michal the daughter of Saul had no child.'" And see Sha'ar Hagilgulim Introduction 9 who writes that a woman to whom a male soul was reincarnated cannot become pregnant unless she has a great merit to allow her to add another female soul within her using Sod Ha'ibur, etc. Check it out there. And see what we wrote earlier in 17:5.