When I send a short message to another mobile phone, whether I receive my short message or not, what words can I add before the mobile phone number to get a reply from the other mobile phone?

Some mobile phones don't support that function. You should first check whether your mobile phone supports SMS reporting. Nokia phones support it, but most other phones also support it. If your mobile phone supports it, you can set it in "Information". If it's not in the message, it may be in Settings. If your mobile phone doesn't support it, then if you still want this function, you can only spend 3 yuan to buy a short message receipt.