In text messaging, OTP can have different meanings depending on the context. Here are the most common meanings of OTP:

• One-Time Password: OTP is a unique randomly generated code used to verify a users identity or a transaction. It is typically used as an extra layer of security for online accounts and financial transactions.

• On The Phone: OTP can also stand for "On The Phone," which refers to currently using the phone. For example, you can say, "I didnt hear what you said. I was OTP".

• One True Pairing: OTP is a term used in fanfiction, media, and social networking to describe a relationship between two characters, usually romantic in nature, that a person feels is perfect or ideal. It is a way for people to express their feelings for a certain pairing and to show their support for it. For example, "Harry and Hermione are my OTP".

It is important to consider the context of the conversation to determine the meaning of OTP.