One can easily transfer contacts selected from the computer (a Mac here, via blutooth); Very easy and effective: You can, for example, if you just extract the list, select this subset directly to Mac and transfer the block to the phone. Same for the update to complete when desirable. There are also a "favorites" feature on the screen Appeals for direct access to the most useful numbers (direct short list)
In short, a very good very comfortable, efficient unit, Amplified sound good.
Only downside: the shell is a bit slippery if installed elsewhere than on its support. One can add to it an anti slip back if it is placed directly on furniture. No problem, it would be exactly the same with an iPhone without rubber shell.