Marilyn, I'm with you. And I keep my cell phone for myself, not use for business. I still have a land line and voicemail box. About 5 of my clients have my cell number because they are also church members and it's in the directory. But I do not want to use my cell for business. And the majority of the time, I have the sound off. I check it frequently and do have my personal and business emails downloaded to keep up, but almost never respond on my phone.
When I retire in 3 years (I think) and give up my website and land line, I may keep a simple second cell with the number we've had since 1988 with 4 mailboxes - just for fun. Dual sim cards? Over my head, too, and I travel abroad every year.