苹果今天发布了iOS 16 beta 4，也就是第四个开发者测试版。最新测试吧包含了很多新功能和改进，包括信息App、家庭 App、邮件App、锁屏通知、CarPlay功能等。

相比较此前版本，iOS 16 Beta 4在新增10张壁纸之外还为Home应用新增了2张壁纸，分别是野花和建筑风。

在iOS 16前3个测试版中，邮件发送后10秒内可以取消发送。在今天的Beta 4中，用户可以选择时间，10秒、20秒或 30秒。

苹果重新设计了自定义锁屏的界面，增加了颜色、渐变、照片等功能，同时还升级了锁屏音乐播放器界面，各种元素进行了加粗，也增加了CarPlay功能的墙纸，可以选择多彩、蓝色和灰色。

需要注意是，壁纸的分辨率为 2000 x 2000，可以满足大部分iPhone和iPad的需要。

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容剂泳17717109323 ______ 打开设置-墙纸-选取新的墙纸.可以选择系统自带的,也可选择相册里面保存的照片作为墙纸.选择好之后点右下角的设定,手机会提示“设定锁定屏幕”、“设定主屏幕”、“同时设定”,跟你你的需要选择就好了.注:根据你的描述,选择“设定锁定屏幕”就可以了.

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