The backdrop for the use case for me with the watch was that I went from an iPhone 5S to a 6S+. In making this move to a much larger phone, I went in planning to ditch traveling with an iPad and also get an Apple Watch to help me keep the larger phone in my pocket more. I had no thoughts of the watch being a standalone replacement for my phone, but rather an extension of it. Here is a repost of a "life in the day" during a trip to London that I posted in another thread here a while back.
I noticed that my Apple Watch was helping me out a lot this morning, so took a couple of minutes to write up how. This week I'm traveling on business in London.
First off, my AW alarm woke me up... I have a difficult time waking up, and having both the AW and iPhone there gives me two different types of alarms. In addition, its much easier in the dark to reach over and tap the watch (clock mode) to see what time it is in the dark. This helps me know if I have any snooze time.
When I first put on the watch this morning, I first checked the watch face to see what my first appointment was, and could go into Sunrise to see what was on the day's agenda. I then glanced at Carrot Weather to see that it wasn't going to rain today (shocking this time of year in London) and then tapped into the full app to see that it was only 40 degrees, but how the temp would go through the day. This let me know what coat to wear.
While eating breakfast, I opened my iPhone and used CityMapper (incredible app) to pick a path to my first appointment. I chose a path that involved walking and two trains on the Underground. I'm completely unfamiliar with where I am and how to get to my destination in London, but very confident with CityMapper. I could have taken a taxi instead for about 4-5 times the cost. After choosing my path, I could then put my phone away while getting through the busy rush hour Underground without having my phone out looking like a tourist.
I haven't found that it works that great for guiding me on the walking part of the trip (with CityMapper), but I'm not jammed in with a lot of people walking down a sidewalk either. CityMapper passes the walk route to Maps, but it seemed to pass it in Car mode. I haven't investigated why.
Once I entered the Underground, I could put my phone away and use the AW. I swiped up to the Glance and it loaded my trip and defaulted to showing the ETA. Pressing, it opens the app nearly instantly and I could then scroll right to each segment of the trip. It tells me which line and direction to go to... then tells me where in the train to get for the quickest exit. While on the train, it tells me how many stops, and updates me on which stop I'm at. Then upon exit, it tells me what platform and direction to go to, and/or where to exit the underground for the quickest walking path.
I was meeting up with someone for coffee, and they had sent me a text to tell me they were at the coffee shop next to our office. Again, I was able to respond from my watch with an "OK".
Once we got to the office, I needed to connect to VPN. I logged into Cisco VPN on my computer and up popped the DuoMobile app on my watch in a couple of seconds asking for 2 factor authentication. I hit approve on my watch and VPN connected.
I got various notifications for messages, news, etc.. throughout the day on the watch. I also use a Bible app that gives me a verse of the day to my watch that I check out during notification checks from time to time. I am now using Pedometer++ which gives me a dedicated step count... a little easier to check in on to reach my walking goal.
I didn't use the Music app on the AW this morning, but do frequently use that to control my music via headphones from my iPhone. I can select and change my playing choices from the watch and leave my phone in my pocket.
I see so many people claiming the AW is pretty much useless, or that no apps are useful. I don't get it because I keep finding more and more ways to use it. I will also say that with Watch OS 2.1, I've noticed a performance improvement across the board, particularly with 3rd party apps. Some of them failed to load at all so I stopped using them, and now they are working fine. I didn't have anything today that had more than a couple of second load time.
That was a while ago, and I find that my use case for the watch will change depending on my plans for an outing. If I'm traveling, its often something like I described above. If I'm working in my home office, I find that the watch keeps me connected when I go to the kitchen or some place else and leave my phone on my desk. When I go to the gym with my Bluetooth sports headphones, I can leave my iPhone in my pocket and do everything I need to do from the watch... controlling what music I'm hearing and volume... and controlling my sports tracking.
The big thing I found when I got the watch was that I had never used the Today screen on my iPhone and never really thought through notifications. After getting the watch, I initially let it just send everything to the watch and it was overwhelming. I then became more intentional about notifications. I went in and turned them off for many apps... others I allowed to go to the phone... and then a subset of those went to the watch. So now when I get a notification on the watch, I really want it. When I'm in meetings or even doing yard work... being able to glance down and see them on the watch is very time saving.
And now the latest use case I found. There is a Dominos Pizza in a shopping center a short distance from our home. I like to pick up our pizza vs. having it delivered. They are very quick, but I usually want to squeeze in another errand in the shopping center on the same trip. The Dominos app sends me a play by play on my watch... in the oven... ready for pickup... very handy.
Oh, and one last one. I just bought a new CarPlay enabled head unit for my truck. I don't like the navigation prompts interrupting my music. So I usually mute the prompts in CarPlay and rely on watching the screen. The watch adds a little extra here because it gives you a unique taptic wrist alert when you are approaching a turn, and that reminds me to check the Apple Maps display on my head unit. If you didn't have CarPlay, it would be the same thing with reminding you to check your iPhone... but its just kind of cool that the three work well together... again allowing me to keep the iPhone put away.