Tefilin: Replacing: Tefilin You Took Off by Choice

If you take off your tefilin without being required to do so and with the intention of replacing them, do not say the blessings when you replace them on your head and arm. 
Note If you took the tefilin off between bar'chu and the end of amida, see the note to Tefilin: Replacing: Tefilin You Had To Take Off or That Fell Off.