Not a thing to be sorry about. Where are the long/lat and UTM ticks? If lost, how do you triangulate from a 5-6" screen? It's an upgrade a forest service handout with pretty colors.
Many high end phones have a battery with no ability to be replaced when the charge runs out. What do you do then?
I am a big believer in dedicated electronics...GPS, iPods, cameras, VHF radios, etc. I have seen phone fail too often in the wilderness.
Back country travel is about redundancy and what can happen.
When going out somewhere new I always have a paper map of the area and compass. I also carry a Garmin e-trex 20 when hiking. The GPS is more to record tracks so I can analyze data and nerd out on stats when back home since it has longer battery life than my phone. I also will pre-download maps of the area I'm going to hike to my phone and will occasionally pull up the app when stopped to double check where I am in regards to where I expect to be at the time. I generally use my phone for taking pics when hiking so it will stay off until I need it. In the event the battery does get drained I carry a 10K mah battery pack to recharge devices when on trail.
The main thing I do before I go on a trip is to look at maps and satellite imagery of my intended route so that I know where I'm going and where I'm supposed to be ahead of time. If all my electronic devices failed I'd still be OK as I have solid map and compass skills and could navigate that way.