If my phone is lost, can someone else recover my SMS and WeChat chat history?

If you don’t set a password on your phone, you can see it as soon as you open the phone, and others can see it without restoring it. But if someone picks up your phone, they won't ask for your IC card because it is your number. They are afraid that if you call them and they want to take possession of your phone, they will throw away the card as soon as they pick it up, and there will be no recovery.