iPhone11 upgrade ios15.3, running score experience
From 14.8 liters to 15.2 to 15.2.1 and then to 15.3, it feels that the ios15 is friendly to the iPhone 11, especially the 15.3 signal and endurance are better than 15.2.1.
15.2.1 is a little better than 15.2, 15.3 is best. The speed is also more than 1,000 points faster than the previous versions.
Today released 15.4 beta1, a bit of an upgrade to try