My Android phone can't open short messages with attachments, and my permission record and contacts are gone. Is it poisonous?

Very likely! Generally, unknown attachments cannot be opened casually, so the landlord needs to be more careful. There are many people with ulterior motives. After all, if the landlord has a backup, he can restore it after brushing the machine card. If there is no backup, it will be more troublesome. You should have a good habit of backing up frequently. If my answer is helpful to you, please adopt my answer. Your adoption is the greatest encouragement to me. Thank you~