IOS 12.2 system will have great changes and progress in two aspects. It may be that the previous version negatively optimized the battery life of the mobile phone, but it did not improve. On the contrary, it reduces the battery life of the mobile phone and makes users doubt the optimization ability of Apple's mobile phone system. Therefore, the optimization of iOS 12.2 system is much better than the previous version.
Moreover, the endurance of mobile phones specially designed for iPhoneXR and iPhoneXS series has been improved to some extent. Take my iPhoneXR for example, its battery life is very good, like I used to have 30% power when I got off work at 6 o'clock, but the battery life can reach 40% when I got off work in the later stage of upgrading the new version, which is still very good.
In terms of signal, since both iPhoneXR and iPhoneXS series are equipped with Intel's baseband, Intel's baseband signal is still not as good as that of Qualcomm, so the signal of Apple mobile phone equipped with Intel's baseband has not been very good, and the signal will be improved in software after this ISO 12.2 system upgrade.