Apple today launched iOS 9.2 update, mainly brought a series of optimizations and fixes. Since there are no any significant new features, with the biggest concern, of course, before deciding to upgrade is an upgrade of the actual effect. My iPhone in the hands of 6 had already beaten us to upgrade for more than 12 hours, and sharing about it.
The lack of updates 300MB, much less than iOS 9.1. Perhaps because of this, before and after the upgrade the difference is not very large. First of all, the overall speed and fluency as well as iOS 9.1, the good news is that iOS 9.2 seemed to step up a little bit. Both start and exit, and the effectiveness of running apps are good. Look at the following iOS 9.2 Beta 4 (and final) speed tests, can be seen in both generations of iPhone iOS 9.1 accelerated slightly.
Power connection, is no different from similar prior for the time being, has not seen abnormal amount of electricity consumption. LTE and Wi-Fi reception is all right. As for some problems encountered in the iOS 9.1, such as occasional lag (in the keyboard is especially likely to occur) and automatic reset, use iOS 9.2 much still did not appear.
All in all iOS version 9.2 is a very stable, but to further enhance an already smooth iOS 9.1. We recommend that you can be sure to upgrade, especially, which is already updated with iOS 9.1 there is no reason why we should not.