Bought the Fenix 8 47m - Solar to upgrade from my Forerunner 945. Ever since I received the watch in early October, I've been disappointed with its performance.
1) Battery - my battery life is just bad. I'm struggling to get around 10 days of battery life and that is with minimal GPS activity. In my latest charge, I charged to full battery last Saturday at 2pm. Now it's around Thursday 12am and I'm left with 42% battery. This is with just one 50 min GPS run.
Settings: no pulse ox, only turn on Bluetooth to sync to my phone one to three times a day, no WiFi, airplane mode on, no music, brightness 10% with timeout 8 sec, no vibration and sound for button press, no light for gesture. Watch is updated as and when a new update is available. I think it's safe to say this is a much lighter use case compared to Garmin's idea of smartwatch usage.
Currently using a connect iq watch face but it's the same one from my 945 days, and I have no battery issues with my 945. Also, have 2 connect iq apps but those are only used for workout activities. My 945 had 2 additional connect iq widgets as well but that didn't cause any battery problems for my old watch. Sad to say that my 5 year old 945 lasts longer than my brand new Fenix 8 even with more things installed.
2) Crashes - I cannot believe the number of times my fenix 8 crashes. Sometimes while using the map for a short while, it crashes. I find that using touch screen in the map has a higher chance of crashing. I literally just tried to use the map as I'm typing this and it crashed. Also had it crash on me before when navigating around the activity page.
The worst repeatable crash I had encountered was after running marathon in late November and saving the activity. For that day, everytime I press the up button, the watch will crash without fail. Pressing the down button all the way to the last widget glance will also crash the watch. I don't know if that's got to do with the marathon activity, but for that day, I couldn't even touch the up and down button for fear of crashing it. Interestingly, once the clock struck midnight, the watch returned to normal.
Another negative point is once the watch crashes, any data between the last sync and crash will not be saved to garmin connect. Let's say I synced my watch at 8am, turn off Bluetooth for the rest of the day and my watch crashes at 6pm. No data between that time will be saved to garmin connect BUT looking at my watch, the data is still there (heart rate, stress level graphs etc). It is just not saving to GC. What gives???
Bugs - I don't have much to complain except for one thing - why am I seeing phone notifications even though I turned them off in my watch settings? I'm still seeing WhatsApp messages etc on my watch. Is this a bug?
Is my fenix 8 a dud? My Forerunner 945 worked so much better from day one. The forerunner 945 is expected to last 14 days and I could squeeze up to around 10 days even after 5 years of usage. My Fenix 8 is expected to last 21 days and I'm struggling to even get half the expected battery life. My fenix 8 crashes so much more in 2 months while my Forerunner 945 only crashed like 1 or 2 times from what I remembered after 5 years.