Find answers below or reach out—we are happy to help.
SideNumber gives you a second virtual phone number for calls, texts, and messaging over Wi-Fi or cellular—so you can keep your personal number private.
Use SideNumber for calls and texting with your SideNumber line, plus rich messaging features like sending photos and voice/video messages. It’s designed to help you keep your personal number private while still communicating like a regular phone line.
SideNumber calls are placed from the app using your data connection (Wi‑Fi or cellular). To the person you’re calling, it looks like a normal call, but your caller ID is your SideNumber—not your personal number.
No. Your SideNumber lives in the app, not on a SIM, so there’s no second SIM or eSIM to buy and your existing carrier plan stays as it is. You can place calls from SideNumber without a SIM as long as your device has an internet connection (for example, Wi‑Fi). If you’re not on Wi‑Fi, you’ll need cellular data.
When you get a SideNumber, you can typically select from available numbers (often by area code/region). Availability depends on inventory at the time you’re choosing.
Numbers can be changed by first cancelling your subscription with the App Store or Google Play. Once the current billing period ends, you can select new numbers by repurchasing a subscription through the 'Add Number' menu in the app.
You can retire a number whenever you’re done with it, but once a number is retired or your subscription ends, it goes back into the pool and may be reassigned to someone else, so we can’t guarantee you’ll get the same number back. Keep your subscription active for any number you want to keep. When you’re ready for a fresh one, pick a new number from the 'Add Number' menu in the app.
No. Your privacy is most important to us, and we don't collect your email address.
No. SideNumber is built so you can use a separate number without sharing your personal phone number with the people you contact.
Calling and SMS/MMS to US and Canada numbers are supported. You need a compatible iOS or Android device and an internet connection (Wi-Fi or cellular).
Use the download links on our home page to download the app from the App Store and Google Play.
Subscription management is handled through your app store account (Apple or Google). For questions about a charge, contact us with the date and amount and we will help investigate.
We built SideNumber to help you separate your side number from your personal line. Read our Privacy Policy for details on what we collect and how we use it.
For account help, billing questions, or general inquiries:
Email: [email protected]