Premium second phone number for clear, reliable calling and texting—no wifi required.
Sideline gives you a dependable second phone number with carrier-level call quality, unlimited calling and texting, and a local area code of your choice. Designed for privacy, work-life balance, and clean communication organization, Sideline works using your phone’s cellular signal—not wifi—so you can stay connected anywhere. Its trusted technology powers secure conversations for consumers, professionals, and small businesses.
Manage calls and messages separately from your main number, automate replies, organize contacts, and enjoy a full suite of pro-grade tools. Perfect for online privacy, small business communication, and people who want clearer boundaries—Sideline delivers a stable second line you can rely on.
Key Features
**Second Number + Local Area Code**
- Pick a local number or choose any city and area code you prefer
- Call and text without wifi using your existing cellular connection
- Enjoy voicemail, caller ID, sms texting, and premium call quality
- Get unlimited calling and texting even when you’re offline
**Powerful Communication Tools**
- Auto-reply to missed calls with customizable text messages
- Share photos, videos, and GIFs from a reliable second number
- Mark Favorite contacts for faster communication
**Full-Featured Second Phone Line**
- Create custom voicemail greetings and read voicemail transcripts
- Use calling and texting tools across multiple devices
- Identify new callers, save contact details, and add conversation notes
- Clearly labeled incoming Sideline calls keep your numbers organized
FAQ
**Can you have two phone numbers?**
Yes—Sideline adds a second number instantly.
**Do you need a second phone?**
No—just download Sideline to your current device.
**How does a second phone number work?**
Choose your number in the app and start calling and texting right away.
**Why do people get second phone numbers?**
To protect privacy, organize communication, and keep work and personal life separate.
**How do I get a second phone number?**
Download Sideline, pick your number, and start calling and texting.
