They consider them an unpleasant task
Various people think that replying to messages is an unpleasant task. Such people try to delay or dwindle time instead of checking messages.
To signal lack of interest
If a person wants to ignore you, they might read your message but respond late on intention as they want to let you know that they want to ignore you. Hence, if a person is not interested in someone, they might do it to get rid of them.
They prefer phone calls
This trait is seen in many people as they do not like talking too much on text, and thus they might respond to text late or might not respond at all. Instead, later they might give you a call to discuss or continue the conversation.
They want to seem important
You might have come across such people who deliberately do not reply as they want to show people that they are swamped and try to create their importance.
You are not a priority
If some fancies you, then chances are they would get back to you quickly, but if they don’t consider your message a priority, they might respond to it late. A person responds to the text soon if they care about the message.
They are too busy
It’s not essential that people intentionally reply late to text messages, but a few people are so busy that they do not even have time to check their inbox. There can be times when people are in a meeting or have a lot of work; then, there are chances that they would take longer than usual to reply to text messages.
They are type A’s
Type A people are pretty busy and tight on schedule. They are always preoccupied and do multiple things at one time. They hardly reply to text messages even it is imperative as they do not get time to check the inbox. (See 32 Signs that show that someone likes you)
They are playing hard to get
Various people willfully do not respond as they want to play hard to get. In this kind of situation, replying late can signal that the person is interested in you.
They don’t want to answer
As per psychologists, individuals might lag behind a task as they don’t wish to do it. Some people who do not wish to respond might keep procrastinating the response.
Their phones are always silent
Various people are in the habit of keeping their phones on silent. Thus they check their phones when they want to or when they get free. Such people easily miss out on checking messages, and therefore they respond late. (See Why do some people always keep their phones silent?)
They don’t check their messages often
Numerous people are not in the habit of regularly checking their inbox. Such people respond late or can even miss the messages and might not reply at all.
Imagine how free life would be if we didn’t have mobile phones and people could just live their life and not be accused of all sorts of dramatic personality traits based on when they reply to a text message. Imagine people just saying exactly what they want and how they feel without hiding behind games and tricks. Imagine living life in the moment giving your whole attention to whats happening in front of you and not being expected to soothe others expectations. Crazy i know.