How to turn off speakerphone<br>Turn off speakerphone during a call. It is important to know how to turn off speakerphone during a call without hanging up on the caller on the other end. [substeps] Tap the round, highlighted speaker button on your iphone screen.
Owners of the iPhone find  the speakerphone option to be useful enough to understand how it works. 
( z1 find :ARG0 ( z2 person :ARG0-of ( z3 own :ARG1 ( z4 phone :name ( z5 name :op "iPhone" ) ) ) ) :ARG1 ( z6 have-degree :ARG1 ( z7 option :mod ( z8 speakerphone ) ) :ARG2 ( z9 useful :ARG1 z7 ) :ARG3 ( z10 enough ) :ARG6 ( z11 understand :ARG0 z2 :ARG1 ( z12 thing :manner-of ( z13 work :ARG1 z4 ) ) ) ) )