Why You Need a Second Phone Number for Privacy (and How to Get One)
A second phone number keeps your personal number out of sign-up forms, marketplaces and public profiles, which reduces spam, scam calls and account linking. The easiest way to get one is to rent a private mobile number online and use it only for the places you don't fully trust.
Your number is an identifier
Your personal number is tied to your bank, your messaging apps and often your real name. When you give it to a website, it can be leaked, sold or used to link your accounts together.
A second number breaks that link: the sites you sign up for only ever see the second number.
Where to use a second number
Online marketplaces and classified ads.
Dating apps and social media sign-ups.
Loyalty programmes, Wi-Fi portals and one-off verifications.
Business listings and customer contact.
Where to keep your personal number
Your bank, your government services and your closest contacts. These are the accounts you most need to control directly.
Setting one up
Rent a private number in the country you need, keep it renewed, and use it consistently for the same group of services so you always know which number an account uses.
Frequently asked questions
Does a second number stop spam completely?
It keeps spam away from your personal number. If the second number starts getting unwanted messages, you can release it and rent a new one.
Can others see messages on my number?
No. SMS Hallo numbers are private; only your account can see the inbox.
How much does it cost?
From $1.80 per month on the 12-month plan.
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Last updated 2026-09-28 · SMS Hallo