Thanks for the feedback, here are a couple variations. #72 - the same as #3 but with more rounded corners on the smartphone. #73 - I moved the smartphone to the right a little & extended the 'S' so the smartphone was not touching the 't'.
#74 - I made it so that the smartphone is not touching the lettering at all, this may make it easier if you eventually wanted to put the logo on the actual product & you might want to just use the letters (without the phone graphic) Let me know you thoughts. Thanks.
P.S. That was a pretty cool idea for your wife to give you a logo as a gift.