In terms of stability, the official version of iOS 14.7 is much better than that of iOS 14.6. Feedback from many iPhone 7P users, after updating to iOS 14.7, found that the fever was greatly reduced and the battery life was also improved. After all, iOS 15 will be pushed soon. IOS 14.7 is expected to be the last big version of iOS 14, and all bugs have been fixed, which is very suitable for the elderly.
However, it should be noted that there is a small problem in the official version of iOS 14.7, which even Apple admitted. If you use an old iPhone that only supports fingerprint unlocking, you will encounter the situation that you can't unlock the iPhone with Apple Watch, and you can only solve it by entering a password. It is expected that this BUG will not be solved until the next minor version of iOS 14.7 is updated.
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Generally speaking, the overall problem of iOS 14.7 is not big. Except for some functional updates, the overall stability has been improved, and it is strongly recommended to upgrade.
Fluency: it feels good, and 14.6 is no problem to use, so 14.7 really doesn't feel any difference.
Fever: Because it is basically used in an air-conditioned room, there is little difference between daily use and before, but I feel less feverish when playing the game (King), so I specially tried two games.
Endurance: because playing games, to be honest, it doesn't feel obvious. It is reasonable to say that the fever has gone down and the endurance should be improved, but it is also very limited.