Iphone version 9.0.2 cannot send text messages.

System software problem, it is recommended to brush back the version.

Expand knowledge:

IOS9.0 is not perfect at present, and there may be some problems that the software cannot recognize or report errors when using it.

Apple claims that iOS 9 can support the upgrade of old models such as iPhone 4s and iPad2, but its hardware performance cannot guarantee the smooth operation of iOS 9 system.

1, firstly, it is suggested to use static wallpaper to reduce the system load; If the effect is not obvious, users can try to refresh the system (similar to reloading the computer).

2. Don't use iTunes and other software to restore old data, only use third-party software to save contact information. , which can completely clean up the garbage data deposited by the system and improve the fluency of the system to a certain extent.