Use TwinNumber with X.
Adding a phone number on X? Use a real U.S. mobile number for verification and two-step sign-in, so codes reach you in your browser wherever you live.
- What we tested
- Receiving SMS verification codes
- Line type
- Mobile
- Last tested
- Oct 12, 2026
We re-test X regularly and update this date.
What X uses your number for
- Turning on login verification with codes by text.
- Speeding up account recovery if you get locked out.
- Helping people who have your number find you, if you allow it.
Add your TwinNumber on X
- 01
Open Account settings
In the navigation menu, tap Settings and privacy, then Account.
- 02
Tap Phone number
Confirm your password, then choose Update number, or Add if you have none.
- 03
Enter the code
Type the verification code X texts to the new number.
Why the line type matters
Social networks often check whether a number is mobile, landline or VoIP before sending a code, and many turn VoIP numbers away. TwinNumber numbers are registered as mobile.
Why banks reject Google Voice →
Instagram
Facebook
TikTok
LinkedInQuestions
Can people find me on X by my phone number?
Only if Let others find you by your phone number is on, under Privacy and safety, then Discoverability and contacts.
Can I delete my number from X?
Yes, on the Phone number screen choose Delete number and confirm.
Do I need to live in the U.S.?
No. TwinNumber works from 150+ countries with just a browser and an internet connection.
Is TwinNumber affiliated with X?
No. We test our numbers with popular services and publish the results. X is a trademark of its owner.
What if a code doesn't arrive?
Request a new code, then check your inbox and notification settings. If it keeps failing, contact us and we'll look into it.
Ready for X codes?
Join the waitlist and be among the first to get your U.S. mobile number.