Correct, but also do not overly rely on electronics. Like people, batteries go dead. The same goes for even a compass. They too can go tits up. Read the F*CKing maps, descriptions, etc ahead of time and commit it to memory. Take copies along on the climb. The total reliance of GPS is BS.
No kidding. When I tell people at work that I climb without a GPS, they say "WHAT?", as though it's impossible to do so. Jesus Christ, I've been climbing with maps and compasses and altimiters all my life. Now a GPS is suddenly indispensible? I don't trust them because like SS and Dino said, batteries go dead, and all electronics can fail in one way or another. I just don't trust them. I have used them, but see them as entertaining novelties more than anything else. I'd rather save the weight and use the map and compass.