While I usually wait a few months to update my iPhones (I've had the original iPhone, 3G, 4, and now 6) to wait for Apple to work out all the bugs, this time I decided to update my iPhone 6 shortly after 11.0.1 was released. The reason I did the update was because Apple is still signing iOS 10.3.3 and I could back to it if I had issues or didn't like the update. Just to be clear, I did a "restore" and update rather than just update in hopes of starting with a clean slate. Also, I used iTunes on my PC rather than an OTA update.
The update went well. Most of my apps transferred just fine. The few that didn't were apps that I had purposefully decided to not update in the past. I used the word "caution" because if you have an Apple watch this is a one way trip. The process of pairing your watch again (the watch will unpair from your phone as part of the update) will require the watch to update to OS 4. This is where the major issue is.
After noticing horrible battery performance (about 50% more battery drain - more on that later) on the phone, I decided to go back to 10.3.3 a couple of days later. The roll back was done as a "restore" and an earlier backup (prior to iOS 11.0.1) was successfully installed. My old phone was back. However, the watch had to be paired up again. Unfortunately, launching the watch app and starting the paring process failed because the app could not be paired with watch due to the phone iOS being "old". It needed the latest iOS. So now, my watch is useless because there is no way roll it back to OS3. A $349 Series 1 42mm Watch is now a paper weight.
I'm not advocating not updating to the latest iOS since it contains safety patches. Just that you may want to make your own decision. Maybe, you should hold off on updating the watch later (which means you can't use it for now) until you are sure you are happy with the latest update.
My 128GB iPhone 6 is 3 years old. I like it a lot. It still runs great (no lags, great battery performance, etc). iPhone 7 and 8 do not offer enough improvements for me to shell out $600-$800 for a new phone.
My battery performance under iOS 11.0.1 vs 10.3.3: My unscientific test consisted of running a library movie (meaning I wasn't streaming it) at full brightness (wifi on, Bluetooth off) until the phone died. Under iOS 11.0.1, my phone was dead in 2:40. Back to 10.3.3, it lasted 5:30. Remember, both were installed as "new" and then restored from essentially the same backup (the old version of 10.3.3). As they say YMMV....
Again, don't update the watch until you are really sure you want to keep 11.
I hope this helps others....
The update went well. Most of my apps transferred just fine. The few that didn't were apps that I had purposefully decided to not update in the past. I used the word "caution" because if you have an Apple watch this is a one way trip. The process of pairing your watch again (the watch will unpair from your phone as part of the update) will require the watch to update to OS 4. This is where the major issue is.
After noticing horrible battery performance (about 50% more battery drain - more on that later) on the phone, I decided to go back to 10.3.3 a couple of days later. The roll back was done as a "restore" and an earlier backup (prior to iOS 11.0.1) was successfully installed. My old phone was back. However, the watch had to be paired up again. Unfortunately, launching the watch app and starting the paring process failed because the app could not be paired with watch due to the phone iOS being "old". It needed the latest iOS. So now, my watch is useless because there is no way roll it back to OS3. A $349 Series 1 42mm Watch is now a paper weight.
I'm not advocating not updating to the latest iOS since it contains safety patches. Just that you may want to make your own decision. Maybe, you should hold off on updating the watch later (which means you can't use it for now) until you are sure you are happy with the latest update.
My 128GB iPhone 6 is 3 years old. I like it a lot. It still runs great (no lags, great battery performance, etc). iPhone 7 and 8 do not offer enough improvements for me to shell out $600-$800 for a new phone.
My battery performance under iOS 11.0.1 vs 10.3.3: My unscientific test consisted of running a library movie (meaning I wasn't streaming it) at full brightness (wifi on, Bluetooth off) until the phone died. Under iOS 11.0.1, my phone was dead in 2:40. Back to 10.3.3, it lasted 5:30. Remember, both were installed as "new" and then restored from essentially the same backup (the old version of 10.3.3). As they say YMMV....
Again, don't update the watch until you are really sure you want to keep 11.
I hope this helps others....