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What WhatsApp actually exposes, what end-to-end encryption does and does not cover, and the settings that change who can see you.

Privacy and security

Who owns WhatsApp, and what that ownership actually means for you

Meta Platforms has owned WhatsApp since 2014, when Facebook paid about $19 billion for it. Here is how that happened and what changed for users afterwards.

Privacy and security

Does WhatsApp show your phone number, and to exactly whom?

Your number is your WhatsApp account, so anyone you message can see it. Here is precisely who sees it in chats, groups, communities and business accounts.

Privacy and security

Can WhatsApp be hacked? What is actually possible, and what is marketing

Almost every 'WhatsApp hacking' claim is false. Here is what can genuinely compromise an account, how to spot it, and how to lock the account down.

Privacy and security

How to hide your phone number on WhatsApp — and what you actually can hide

You cannot hide your number from someone you message, but you can control almost everything else. Here is what works, what does not, and the second-number option.

Privacy and security

Is WhatsApp safe for sending private photos?

Encryption protects the photo in transit. It does nothing about backups, screenshots or the person receiving it — which is where the real risk sits.

Privacy and security

How to see your blocked numbers on WhatsApp, and what blocking does

Your block list is at Settings → Privacy → Blocked contacts. Here is what blocking hides, what it does not, and what happens when you unblock.

Privacy and security

How to remove WhatsApp from Facebook, and what it actually achieves

You can unlink WhatsApp from a Meta Accounts Center in a few taps. Here is how, and an honest account of what that does and does not stop.

Privacy and security

What WhatsApp is used for in dating, and the risk nobody mentions

Moving a dating match to WhatsApp hands over your phone number permanently. Here is what that means and how the romance-scam pattern works.

Registering, verifying, changing your number or name, adding contacts and moving to a new phone — the account mechanics, step by step.

Setup and account

What the WhatsApp 6-digit code is, and why nobody should ever ask you for it

The 6-digit code is WhatsApp's registration key for your phone number. Here is what it does, why it arrives unasked, and what to do when it never turns up.

Setup and account

Does WhatsApp need a phone number? Yes, and here is why it is built that way

WhatsApp requires a phone number that can receive a code — there is no email or username signup. Here is what qualifies, what does not, and why.

Setup and account

How to use WhatsApp without a mobile phone number

You cannot skip verification, but you can register WhatsApp on a landline or a spare number. Here is what works, what fails, and the honest limits.

Setup and account

How to change your name on WhatsApp, and who actually sees it

Changing your WhatsApp name takes four taps, but only some people ever see it. Here are the steps and which name each person is shown.

Setup and account

How to change your WhatsApp profile photo, and who can see it

Changing your WhatsApp photo takes four taps on any platform. The setting that matters more is who is allowed to see it — which defaults to everyone.

Setup and account

How to see your own WhatsApp number on any device

Your WhatsApp number is shown under your name in Settings. Here is where to find it on iPhone, Android, Web and desktop, and what it is not.

Setup and account

How to create a WhatsApp account, step by step

Setting up WhatsApp takes about three minutes. Here is the whole process on iPhone and Android, plus the two settings worth changing immediately.

Setup and account

How to add a contact in WhatsApp, four different ways

Add someone from inside WhatsApp, from your phone book, by QR code, or message them without saving them at all. Plus why a contact fails to appear.

Setup and account

Can you use an old WhatsApp number without verification?

No — verification cannot be skipped, and nobody at WhatsApp can waive it. Here is what can genuinely be recovered when the old number is gone.

Setup and account

How to change your WhatsApp number without losing your chats

The Change Number tool migrates your chats, groups and settings to a new number and tells your contacts. Do it before you lose the old number.

Setup and account

How to change the language in WhatsApp on Android and iPhone

Android has an in-app language setting. iPhone does not — you change it per-app in iOS Settings. Here are both routes and what they do not affect.

Setup and account

Can you get WhatsApp on a Samsung tablet or an iPad?

Android tablets can run WhatsApp as a linked companion device. iPad has its own app now. Here is how each works and what the limits are.

Whether WhatsApp needs Wi-Fi, how much data calls actually use, what shows on a phone bill, and how it behaves abroad.

Calls, data and cost

Does WhatsApp work without Wi-Fi? Yes — and here is what it costs

WhatsApp works on mobile data with no Wi-Fi at all. This explains what it needs, how much data messages and calls actually use, and what breaks offline.

Calls, data and cost

Does WhatsApp work internationally, and what does it cost abroad?

WhatsApp works in almost every country with no extra charge, because messages travel over the internet. Here is what changes abroad and where it is blocked.

Calls, data and cost

Is WhatsApp free? Yes, and here is what it actually costs you

WhatsApp costs nothing to install or use, and has since 2016. The real costs are data, roaming and what Meta gets from your metadata.

Calls, data and cost

Do WhatsApp calls appear on your phone bill?

WhatsApp calls are never itemised on a phone bill because they are not carrier calls. Here is what a bill can and cannot reveal about your WhatsApp use.

Ordered fixes for messages that will not deliver, calls that fail, an app that will not open and updates that will not install.

Troubleshooting

How to update WhatsApp on iPhone and Android

Updating WhatsApp goes through the App Store or Google Play. Here are the steps, how to automate it, and what to do when the update is refused.

Troubleshooting

Why WhatsApp is not working, and how to fix it in order

An ordered triage for WhatsApp that will not open, connect, call or download — starting with the causes that are actually most common.

Troubleshooting

Why WhatsApp messages are not delivering: the seven real causes

One tick means the message reached WhatsApp but not the recipient's phone. Here are the seven causes, ranked by how common they actually are.

Online, last seen, typing, Chat Lock, QR codes, communities and the labels WhatsApp shows without explaining — decoded.

Features explained

Why do people use WhatsApp, and why not everywhere?

WhatsApp is dominant across Europe, India and Latin America and marginal in the US. The reason is SMS pricing history, not features.

Features explained

How WhatsApp works, from registration to read receipts

A complete plain-language guide to operating WhatsApp: setting up, sending messages, the tick system, calls, groups, backups and linked devices.

Features explained

Why people use WhatsApp instead of texting

WhatsApp beat SMS on cost, groups, media and encryption. Here is a feature-by-feature comparison with SMS, RCS and iMessage, and where texting still wins.

Features explained

How to scan a WhatsApp QR code, and the scam that abuses it

WhatsApp uses QR codes for two different jobs: adding a contact and linking a device. Here is how to scan each, and why one of them is dangerous.

Features explained

Is WhatsApp social media, or just a messaging app?

WhatsApp started as an SMS replacement and grew Status, Channels and Communities. Here is where the line sits and why the answer changed.

Features explained

What 'online', 'last seen' and popup notifications actually mean

WhatsApp's status indicators get over-read constantly. Here is what each one genuinely proves, and what it does not.

Features explained

What does 'user defined' mean in WhatsApp?

'User defined' is a label from your phone's contacts app, not from WhatsApp. It means a number was saved under a custom label rather than Mobile or Home.

Features explained

How to unlock chats on WhatsApp, and how Chat Lock works

Locked chats sit in their own folder and open with your fingerprint or face. Here is how to unlock, unlock with a secret code, and switch it off.