iOS11强制禁用32位应用？iphone上面 内存管家 等软件真的有用么

苹果iPhone全系列RAM大小至今未超过③GB，那么强制开发者升级到⑥④位平台的意义何在？⑥④位应用相比③②位应用，在内存不超过③.②⑤G的情况下，有何优势？优势大吗？

运行③②位应用的时候要再加载①遍③②位版本的依赖库，浪费内存，而且印象中看过以前版本的文档，①旦触发加载，除非设备重启不会释放（更新，这个不太确定，现在确定的是如果⑥④和③②位app同时运行，依赖库要加载两套，这是iOS ⑦时候的文档）。

\"When iOS is executing on a ⑥④-bit device, iOS includes separate ③②-bit and ⑥④-bit versions of the system frameworks. When all apps running on the device are compiled for the ⑥④-bit runtime, iOS never loads the ③②-bit versions of those libraries, which means that the system uses less memory and launches apps more quickly,\"

\"Because all of the built-in apps already support the ⑥④-bit runtime, it is to everyone’s benefit that all apps running on ⑥④-bit devices be compiled for the ⑥④-bit runtime, especially apps that support background processing. Even apps that are not performance sensitive gain from this memory efficiency.\"

有些大内存占用的app会提示用户重启设备获得更佳性能，这是苹果不允许的，被发现这样提示用户的 app可能会被警告下架。（App Store Review Guidelines ②.④.④）

所以干脆全都砍掉算了，事情少①件算①件

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