Why Do So Many Apps Ask for Your Phone Number?
Apps ask for your phone number mainly to stop fake accounts, but that's not the only reason. Knowing why helps you decide when to share your real number and when not to.
The main reasons
- Stopping spam and fake accounts. A working phone number is harder to get in bulk than an email address.
- Account recovery. A way to send you a code if you forget your password.
- Two-factor login. SMS codes as a second step.
- Finding contacts. Matching your number with friends who have your number.
- Marketing. Some services send offers by SMS.
The trade-off
Every app that stores your number is another place it can leak from. Leaked numbers feed spam, scams and SIM swap attempts.
When to share your real number
Banks, your main email, government services and anything you'll need to recover for years. Stability matters more there.
When a separate number makes sense
- One-off sign ups and trials.
- Apps you're just testing.
- Services where you don't want to be found by your number.
Check the settings
If you do share your number, look for privacy settings like "who can find me by my phone number" and switch off marketing messages.
For sign ups where you'd rather keep your number private, telly.cat rents numbers that receive the code, with refunds when no SMS arrives.
FAQ
Why do apps need my phone number to sign up?
Mostly to limit fake and spam accounts, to verify you're a real person and to offer account recovery. Some also use it for marketing or contact matching.
Is it safe to give apps my phone number?
It depends on the app. Your number can end up in data leaks or marketing lists, so share your real number only where you really need long term access.