http://revach.net/article.php?id=2889

Section: Halacha   Category: Tshuvos
Shevet HaKehosi: Can You Write In Middle Of Davening?
Duringthe parts of davening that it is assur to talk, are you permitted to write, or is writing considered like talking?  The Shevet HaKehosi (1:73) says that there is a Machlokes HaPoskim by Hilchos Shvuos, if writing is like speaking.  The Pischei Tshuva (YD 276:1) holds that itis like talking.  However Rebbi Akiva Eiger (Tshuvah 30) says that it is considered speaking only if a person has in mind that his writing should be like speaking.  Otherwise, says Rebbi Akiva Eiger, it would be assur to write Hashem's name (Yud, Key, Vav,..) in the Torah since we may not pronounce Hashem's name the way it is written.  Therefore unless you had in mind that your writing during davening should be like speaking, it is not considered as such.

While writing may not be like speaking, the Shevet HaKehosi says that in Hilchos Kesivas Sefer Torah we see that writing is considered a Hefsek unless you are writing pasukim.  Therefore he paskens that unless you are writing pasukim or Divrei Torah or it is a "Tzorech Gadol", you should refrain from writing in middle of davening.

Important Note: We try to convey theTshuva to the best of our ability. We admit that our understanding maynot be accurate. Please also understand that this Tshuva may not be thefinal word on this topic. One should consult a Rav before drawing anyconclusions.