Really? I would have thought having keys and a phone bouncing around in your pockets would be a lot more annoying than a hydration pack.
Trust me on this. I have one of the biggest phones around - an iPhone 13 Pro Max. I rode for 4 hours yesterday with it in my 45NRTH pants pocket. Even though I also wore a large. CamelBak!
The pockets on all my shorts and pants are strategically located - they are all on the rear side of my upper thigh. They function flawlessly in terms of access, and my phone instantly disappears within seconds of riding.
I would never put a phone or key fob in a saddle bag, even if it didn’t interfere with the dropper. That’s just asking for trouble. Like I said, anything I have put in a saddle bag (BITD), turned to pixie dust bouncing around in there. My phone cost close to $2000.
To be clear, there are risks riding with my phone in my pocket. I get that. But that’s where Apple Care comes in.
Here’s an example of a pair of shorts with “magic” phone pockets.
A knee-length version of our all-surface trail short, built for three-season riding and styled for stops at the watering hole.
7mesh.com
I also have these from the same company, if I ever don’t mind wearing spandex alone (different approach with pockets on the front thighs and built into the top rear of the shorts/lower junction of the bib):
The MK3 Cargo Bib Short is a refined road cycling bib short, built to deliver dawn-to-dusk comfort and extended pocket storage.
7mesh.com
All of the better designed bike wear now has the rear upper thigh zipped magic phone pockets, including 7Mesh, Patagonia and 45NRTH. They can all be found on sale. I have not bought a single piece for MSRP.
Heading out now for an even more epic journey, phone in one of my two “magic” pockets, even though I will be wearing a large CamelBak again.
Good luck OP!