IPhone 13, upgrade iOS 15.2 to IOs15.1.

I use iPhone 13. Since 15.2RC, we have been paying attention to this system, and the evaluation has been very general, which can be said to be worse than the evaluation of 15. 1

My 13 factory system, 15.0.2, took me one day to upgrade to 15. 1 and then to 15.5438+0 (it is said that the signal problem has been fixed), and I used this system for the longest time. What makes me most satisfied is the battery life (because I have an old mobile phone, I usually listen to books for 6 seconds, so I can sleep because I need wired headphones), and the light use of 13 can last for two days on a single charge.

I saw those new features before upgrading 15.2. I think all other new features are the same, except that the weather can locate the area. So it's about fluency, battery life and bug fixing.

I read a lot of comments from netizens before upgrading. Generally speaking, it is:

1. The fluency has been improved, which is better than the RC version (I understand it should be the same, because the newly upgraded system will be smooth all day).

2. The signal has improved.

3. The battery life is reduced a little.

4. There are no obvious bugs.

5. Fever is less.

Then I upgraded 15.2.

My real feelings after the upgrade:

The 1. signal has not changed.

2. The fever has not changed.

The battery life has been reduced a lot, and it can't be used for two days.

The new function is not interesting, and I don't have a watch for the most important ECG function.

5. Small bugs still exist. For example, hands-free calls will flash, and appstore details will be stuck.

Then I watched the discussion in the bar for two days:

Then I want to try it myself. After I upgraded 15.2, the data recovered well. After using it for a day, the most obvious feeling is that the battery life has been reduced too much, and I really miss the battery life of 15. 1.

I replied 15.5438+0. 1. I started reading your comments again. It is said that it will take some time for the battery life to be normal. Then I rose to 15.2. It took more than a day, but this time I didn't run out of electricity all night. I think it should be good. It consumes a lot of electricity during the day. In the past, 15. 1. 1 used 20% of the electricity in the morning, but now 15.2 is visible to the naked eye.

I couldn't bear it any longer, but I dropped it back to 15. 1. 1. I was afraid that this version would be closed soon and could not be brushed.

I brushed 15.2 twice, and finally decided to go back to 15. 1. 1, and then upgrade it after the last few versions of 15 or when there are really valuable new functions. By then, all aspects should be satisfied. At least the previous versions I remember, 9.3.5, 10.3.3, 14.7. 1, 14.8, are all very good systems.

The screenshot above is the content in the bar. I want to see the comments of netizens. Go and have a look.

My suggestion: iPhone 13, anyway, 15.2 has a problem, then go back to 15. 1. 1, at least with good battery life.