has just been upgraded to iOS 15 . It was a 14.8 system before. The upgraded system is a few small functions I like, such as taking photos and scanning text, and text on pictures can be copied and extracted directly. These functions are actually very practical. That's why I want to upgrade to iOS 15.
My phone is Apple 12. After the upgrade, I restarted it and started charging. After being fully charged at 9 o'clock in the evening, the battery dropped to 92% until 7 o'clock in the morning. The terrible thing is that during this period, I almost I don’t use the cell phone much, sleep time, and I play with the computer from nine to eleven and don’t touch the cell phone much. That is to say, from nine o’clock in the evening to seven in the morning, 8% of the battery is lost on standby, which is terrible... …The phone does not turn on Bluetooth, and the background refresh is all turned off, which is a pure standby state. This power loss is really scary.
is not recommended for everyone to upgrade, but the current power failure situation is scary, I hope to give some suggestions to friends who want to upgrade.
used iPhone7 to upgrade to iOS 15 system before, and the power loss is relatively fast. At least so far, my phone has no evidence that the flight will be better after the upgrade, and it is because the flight will be worse after the upgrade.
I am most afraid of battery life, because the battery life of Apple phones has always been a headache, so it is better to observe and observe before upgrading.
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