I'm not familiar with either of those devices but I'd expect as much.Sounds pretty much the same as instructions from SPOT or InReach
When using a satellite phone you must realize you are communicating with a satellite hundreds of miles in orbit. The satellite signal must go up to one of the satellites and then the signal must go down to a ground station where it is then delivered to the call destination. For you to accomplish this with Globalstar or Iridium satellite phones you must be outdoors or have an external antenna outdoors with at least 80% view of the sky.
https://globalcomsatphone.com/the-dos-and/
So apparently you're not much better of with an actual SAT phone though you can carry on a conversation.