When someone asks “Who is this?”, they simply want to know who is contacting them. The best response depends on your relationship with the person, the tone of the conversation, and the platform you’re using. A reply can be formal, funny, friendly, mysterious, professional, or direct.
People search for responses to “who is this” because they receive texts, calls, social media messages, or WhatsApp chats from someone whose number isn’t saved. Knowing how to answer naturally helps avoid awkwardness, confusion, or misunderstandings.
This guide covers what “Who is this?” means, how people use it, and the best responses for different situations.
Quick Answer
| Topic | Details |
|---|---|
| Phrase | “Who is this?” |
| Meaning | Asking for the identity of the sender or caller |
| Category | Common conversation phrase |
| Tone | Neutral, curious, cautious, or direct |
| Popularity | Extremely common |
| Common Platforms | Text messages, WhatsApp, Instagram, Facebook Messenger, phone calls |
| Common Audience | Anyone receiving an unknown message or call |
| Common Use | Verifying who contacted them |
| Reply Needed | Usually yes |
| Best Response | Introduce yourself clearly and briefly |
What Does “Who Is This?” Mean?
The phrase “Who is this?” is a straightforward request for identification.
Someone asks it when:
- They don’t recognize your phone number.
- They forgot to save your contact.
- They aren’t sure who sent the message.
- They want to verify your identity.
- They are being cautious about unknown contacts.
Literal Meaning
The literal meaning is:
“Please tell me your name or identity.”
Conversational Meaning
In everyday communication, it can mean:
- “I don’t have your number saved.”
- “Remind me who you are.”
- “Why are you contacting me?”
- “I want to confirm this is really you.”
The tone depends heavily on context. It can sound friendly, confused, suspicious, or even slightly annoyed.
Full Form
There is no full form for “Who is this?”
It is a standard English question, not an acronym, abbreviation, or internet slang term.
Origin and Background
“Who is this?” has existed in spoken English for generations.
Before mobile phones, people commonly answered landline calls with:
“Hello, who is this?”
As texting, messaging apps, and social media became popular, the phrase naturally moved into digital communication.
Today, it appears across:
- SMS
- Instagram DMs
- Facebook Messenger
- Telegram
- Snapchat
- Phone calls
- Business communication
Its popularity comes from the fact that people frequently receive messages from unsaved numbers.
How People Use It
Here are the most common situations.
1. Unknown Number
You text someone and they reply:
“Who is this?”
They’re simply identifying the sender.
2. New Phone Number
You changed numbers.
The person doesn’t recognize the new contact information.
3. Business Contact
A customer receives a message from a company representative.
They ask who is contacting them.
4. Social Media Message
Someone receives a DM from an unfamiliar account.
They want confirmation before continuing the conversation.
5. Safety and Privacy
Many people verify identities before responding to strangers online.
Best Responses to “Who Is This?”
Direct Responses
- Hi, it’s Sarah.
- This is Mike from accounting.
- It’s John. We met at the conference.
- I’m Emma from your study group.
- This is Alex from work.
Friendly Responses
- Hey! It’s Rachel. Hope you’re doing well.
- Hi, it’s Jake. Long time no talk.
- Hey, this is Mia from school.
- It’s Noah. How have you been?
- Hi! It’s Olivia from the gym.
Professional Responses
- Hello, this is David from ABC Company.
- Good afternoon. My name is Jessica from customer support.
- This is Michael regarding your appointment.
- Hi, this is Karen from the admissions office.
- My name is Robert, and I’m following up on our conversation.
Funny Responses
- Your favorite person.
- A mysterious traveler from another dimension.
- Someone who owes you a coffee.
- The winner of today’s guessing contest.
- The person your phone forgot to save.
Playful Responses
- Take a guess.
- Hint: We’ve talked before.
- Starts with an A.
- Your memory test for today.
- Someone you’ve definitely met.
Polite Responses
- Sorry, I should have introduced myself. It’s Daniel.
- My apologies. This is Jennifer.
- Sorry about that—it’s Chris from the project team.
- I forgot to mention my name. It’s Natalie.
- Apologies for the confusion. This is Mark.
Meaning on Different Platforms
On WhatsApp, “Who is this?” almost always means the recipient does not recognize the phone number.
Common response:
“Hi, it’s James. We met at Sarah’s birthday party.”
People use it when receiving a DM from an unfamiliar account.
Example:
“Who is this? I don’t recognize the username.”
Facebook Messenger
Often used when:
- A profile looks unfamiliar
- The conversation is old
- The person forgot the contact
Snapchat
Users frequently ask:
“Who is this?”
Because usernames often differ from real names.
Discord
The phrase appears in servers and direct messages when users know screen names but not real identities.
Text Messages
This is the most common platform.
People often ask it after receiving a message from an unsaved number.
Dating Apps
Someone may ask:
“Who is this?”
after moving from the app to text messaging.
They’re usually verifying identity.
Real Conversation Examples
Example 1
Person A: Hey, how have you been?
Person B: Who is this?
Person A: It’s Ethan from high school.
Explanation: Person B doesn’t recognize the number.
Example 2
Person A: Hi, I wanted to follow up.
Person B: Who is this?
Person A: This is Jessica from customer support.
Explanation: Professional identification.
Example 3
Person A: Guess who?
Person B: Who is this?
Person A: Your former roommate, Kevin.
Explanation: Casual conversation.
Example 4
Person A: Are we still meeting tomorrow?
Person B: Who is this?
Person A: Sarah from the marketing team.
Explanation: Work-related clarification.
Example 5
Person A: Hey!
Person B: Who is this?
Person A: The person buying lunch tomorrow.
Explanation: Humorous response.
Example 6
Person A: Hi there.
Person B: Who is this?
Person A: Sorry, this is Megan.
Explanation: Polite introduction.
Example 7
Person A: Remember me?
Person B: Who is this?
Person A: Alex from college.
Explanation: Re-establishing contact.
Example 8
Person A: Hello.
Person B: Who is this?
Person A: David from the repair service.
Explanation: Business communication.
Example 9
Person A: I found your lost wallet.
Person B: Who is this?
Person A: My name is Brian. I got your number from the ID card.
Explanation: Identity verification.
Example 10
Person A: Good news!
Person B: Who is this?
Person A: Your lucky friend, Emma.
Explanation: Friendly and playful.
When Should You Use It?
You can use “Who is this?” when:
- You receive a message from an unknown number.
- A caller does not identify themselves.
- You don’t recognize the social media account.
- You’re verifying someone’s identity.
- The context is unclear.
Better alternatives include:
- “May I ask who’s texting?”
- “Sorry, who is this?”
- “Can you remind me who this is?”
- “I don’t have this number saved. Who is this?”
These sound slightly more polite.
When Should You Avoid Using It?
Avoid using it when:
- The sender already identified themselves.
- The context clearly shows who they are.
- The message comes from a professional contact whose signature is visible.
- A more polite version would fit the situation better.
For example:
Instead of:
“Who is this?”
You could say:
“Sorry, I don’t recognize this number. May I ask who’s texting?”
Is It Rude, Offensive, or Flirty?
Is It Rude?
Usually no.
However, it can sound abrupt if written alone.
Compare:
More abrupt:
Who is this?
Friendlier:
Hi! Sorry, who is this?
Is It Offensive?
No.
It’s a normal question.
Is It Flirty?
Not inherently.
But playful versions can become flirtatious:
- “Guess who?”
- “You’ll have to figure that out.”
- “Your future favorite contact.”
The tone depends on the relationship between the people involved.
Other Meanings (If Any)
There are no widely recognized alternative meanings for the phrase.
It consistently refers to identifying a caller, texter, or message sender.
The exact tone may vary, but the meaning remains largely the same.
Similar Slang and Related Expressions
| Expression | Meaning | Usage | Tone |
|---|---|---|---|
| Who’s this? | Identify sender | Texts and calls | Neutral |
| Who is this? | Identify sender | Universal | Neutral |
| Who am I speaking with? | Formal identification | Professional | Formal |
| Who’s texting? | Identify texter | SMS | Casual |
| May I ask who’s calling? | Phone calls | Formal | Polite |
| Sorry, who is this? | Clarification | Universal | Friendly |
| Remind me who this is | Memory refresh | Friends | Casual |
| New phone, who dis? | Humorous version | Internet slang | Playful |
“Who Is This?” vs. “New Phone, Who Dis?”
| Phrase | Meaning | Tone |
|---|---|---|
| Who is this? | Genuine identification request | Neutral |
| New phone, who dis? | Joke implying unfamiliarity | Humorous |
Common Mistakes
Assuming It Is Rude
Many people interpret it as rude.
In reality, most people simply don’t recognize the number.
Responding With More Mystery
If someone asks who you are, replying with:
Guess.
often creates frustration.
Clear identification usually works best.
Forgetting Context
Don’t assume people remember your number months or years later.
Introduce yourself briefly.
Oversharing
A simple introduction is usually enough.
For example:
Hi, it’s Rebecca from the volunteer group.
No need for a long explanation unless requested.
Frequently Asked Questions
What is the best response to “Who is this?”
The best response is a clear introduction:
“Hi, this is Michael from work.”
Why do people ask “Who is this?”
Usually because they don’t recognize the phone number, account, or caller.
Is “Who is this?” rude?
Not normally. It can sound direct, but it is generally acceptable.
How do I respond professionally?
Use:
“Hello, this is Jennifer from ABC Company.”
Should I tell someone who I am immediately?
Yes. It helps avoid confusion and builds trust.
What if I texted the wrong number?
Be honest:
“Sorry, I think I reached the wrong person.”
Is “Who’s this?” the same as “Who is this?”
Yes. “Who’s this?” is simply a shorter version.
Why do people say “New phone, who dis?”
It’s a humorous internet expression suggesting the speaker doesn’t recognize the sender.
Can “Who is this?” be used on social media?
Absolutely. It’s common in DMs and private messages.
Should I respond if I don’t know the sender?
Use caution. If the message seems suspicious or unsafe, avoid sharing personal information until you verify who they are.
Final Thoughts
The phrase “Who is this?” is one of the most common questions in texting, phone calls, and online messaging. Its purpose is simple: the other person wants to know who contacted them.
The best responses to “who is this” are usually clear, brief, and polite. Introducing yourself right away prevents confusion and helps the conversation move forward smoothly.
Whether you’re texting an old friend, contacting a client, messaging someone on WhatsApp, or reconnecting after a long time, a simple response like “Hi, it’s Sarah from college” is often all that’s needed. If the situation is casual, you can add humor or playfulness, but clarity should always come first.
