I have been guilty of texting durign service... butits usually to one of my kids that Ive seen out the corner of my eye not doing exactly as I directed them to do... or if my 1 son gets up too many times to go bathroom, water, etc I will text my daughter to say DONT MAKE ME COME OUT OF THIS CHOIR LOFT.....
LOL! Reverse and that's me and my mom when I was in the choir at 12 years old (long before text messaging!)! If she saw me passing a note in the choir or something she would look up and her eyes would burn through my forehead saying "cut that out!"
I have sent texts in church (when church is just about over) to secure a meeting place with someone after church because my church building is kinda big.... And occasionally to crack a joke....