Meizu M8 cannot input information.

Have you installed a third-party input method? At present, this situation is a bit contradictory, which can be solved by restoring the registry, or by switching the input method with the optimization wizard and switching to the point message, so that the point message can be used normally. After installing the message, A4 can't be used. Even if you use it, you have to use A4 in your message. Besides, turn it on every time. There is a patch in the forum that allows mobile phones to default messages automatically. If you are used to the news, you can do the same.

good luck