Smartwatches similarly have had the same effect for me and I can anecdotally recommend it.
I think another thing to consider is having ways for people to reach you _without_ your cell phone. For instance, I have a home phone, and calling my cell also rings that home phone. You could set up something similar if you have an office phone, or using a softphone on your desktop. That leaves you with instances where you leave home or the office, which are honestly cases where I'm personally least likely to look at my phone because I'm usually doing things that occupy my full attention (unless I'm commuting where I'm often reading a book on my phone).
I think another thing to consider is having ways for people to reach you _without_ your cell phone. For instance, I have a home phone, and calling my cell also rings that home phone. You could set up something similar if you have an office phone, or using a softphone on your desktop. That leaves you with instances where you leave home or the office, which are honestly cases where I'm personally least likely to look at my phone because I'm usually doing things that occupy my full attention (unless I'm commuting where I'm often reading a book on my phone).