iPhone

If you are asking if your iPhone can go back from iOS 26 to iOAS 18, then that is not possible. Apple does not support that. Please consider posting your question to the Chinese community forum where others can help in your own language. You will need to provide more detail if you do.

如果您询问您的iPhone是否可以从iOS 26恢复到iOAS 18，那么这是不可能的。 蘋果不支援。 请考虑将您的问题发布到中文社区论坛，其他人可以用您自己的语言提供帮助。 如果您这样做，您将需要提供更多详细信息。

官方 Apple 支持社区

i think this’ll help.

将 iPhone 设置还原至默认状态 - 官方 Apple 支持 (中国)

sorry if i got your language wrong tho :/

but i hope it helps.