iOS 15 自带的「一起听」好不好用？用过之后我想说……

首先，要确保双方的设备都升级到了 iOS 15.1 版本，如果不确定的话，可以去「设置-通用-关于本机」里看一眼。如果有一方没升级到 iOS 15.1，那么版本低的一方将无法看到共享的屏幕内容。
TechRepublic

Still Using an Older Version of iOS or iPadOS? Update Now to Patch These Critical Security ...

Still Using an Older Version of iOS or iPadOS? Update Now to Patch These Critical Security Vulnerabilities Your email has been sent On Monday, Apple issued critical ...