After having failed with companions in Fallout 3 and New Vegas...more specific to track them down after they went missing, they added with the Gun Runners Arsenal a terminal to call them, as they were unable to add a PipBoy function for it. Now in Fallout 4 you expect that they added a function right off the bat...or even better...not let it happen that they disappear...but oh wonder, I sent Piper to the Minutemen stronghold, I travel there after I needed to do some BoS missions and she is nowhere to be found.
Do I need to wait now until this function comes with the season pass or even start a new game*, just because they don't learn their lessons?
*In fact I just did load an old file and so lost 2 hours progress.