After my Xiaomi Mi 11Pro updated the MIUI13, my iPhone 11Pro Max also received the official version of iOS 15.2.1 pushed by Apple. Combined with the iOS update package of this version, the content of this update is not much, mainly to repair and enhance security. For the purpose of experimentation, I have upgraded the iPhone 11 Pro Max.
Before reading this article, I give a small suggestion to people holding old iPhones: Don't rush to upgrade the iOS 15.2.1 system. Why, the key is that the following points need to be paid attention to, and it is not too late to make a decision after understanding. Of course, these points need to be understood, and they are my heart's words. Well, without further ado, let's get straight to the point.
After the iPhone 11Pro Max upgraded to iOS 15.2.1, the response became a bit sluggish
At present, the battery health of my iPhone 11Pro Max is 88%, which naturally cannot be compared with the iPhone with 100% battery health in terms of performance, but when running the previous version of the iOS system, the phone is quite smooth, and even made me think that the previous version of the iOS system is the most in line with the iPhone 11Pro Max.
So, after upgrading to iOS 15.2.1, I got started with the iPhone 11Pro Max and suddenly felt that it was not so fast to slide, but a little sluggish. Of course, this so-called dullness, now I have not found that the overall experience of using the machine, but the feeling is not particularly good.
iOS 15.2.1 did not add new features, and older models can optionally be updated
As far as the operation experience of the iPhone 11Pro Max update is concerned, iOS 15.2.1 does not have any new features worth mentioning. At the same time, as just mentioned, this version of the iOS system is mainly to fix bugs, and to a certain extent, it has added some security, but the perception of ordinary users will not be very strong.
Therefore, my opinion is that if you are holding an older iPhone, you can optionally update it. In other words, suppose you are curious about what are the highlights of iOS 15.2.1, which can be upgraded, and have no impact. Conversely, if your iPhone uses a good and handy iOS system, then there is no need to upgrade.
Charging and battery life
After upgrading to iOS 15.2.1, my iPhone 11Pro Max charged slower. Of course, the charger I use is the original charger that comes with the iPhone 11Pro Max. So the charging becomes slower, and personal speculation should have something to do with the system mechanism. However, this is actually a detail change that does not have much impact. After all, the battery is aging and slower.
In terms of battery life, the battery health of the current iPhone 11Pro Max is still 88%. To be honest, in terms of my habits of using the machine, it can be used for one day, that is to say, the machine is charged in my rhythm every day. At the same time, according to my current use, iOS 15.2.1 has not found a large power consumption for the time being.
summary
iOS15.2.1 official version of the system in the function of no major changes, handheld iPhone you can upgrade or not upgrade. In addition, at the signal level, my iPhone 11Pro Max has never had a bad signal. To this end, if you are using a new iPhone, you can test it yourself.