Sideline - Second Number for a Business Line

Get a second phone number with Sideline and keep your personal and professional communications completely separate. Unlike standard calling apps that rely on wifi, Sideline delivers carrier-level call quality using your existing cellular connection—so your calls and texts arrive reliably, every single time.

Choose a local area code from any city you want, then start calling and texting immediately. With unlimited calling and texting included, your second number works exactly like your primary line. No wifi required, no dropped calls, no waiting for messages to go through. Whether you're protecting your privacy online, managing a side business, or simply organizing work calls away from personal contacts, Sideline gives you a genuine second phone line without needing a second device.

Take control of how people reach you. Incoming calls to your Sideline number are clearly labeled, so you instantly know which line is ringing. Miss a call? Set up automatic text replies to let callers know you'll get back to them. Organize your contacts with favorites, attach photos and videos to conversations, and manage everything from a single app.

Your second number comes with the same professional features as your main line: voicemail with transcripts, caller ID, SMS texting, and the ability to make and receive calls across multiple devices. Create a custom voicemail greeting, save detailed notes about conversations, and identify new callers with confidence. These aren't stripped-down calling features—this is a full-featured communication tool built for people who need reliability and separation.

Sideline is part of the Pinger family of trusted communication apps, which have been downloaded over 160 million times globally and power billions of conversations for professionals and small business owners. Backed by patented technology, Sideline's call quality stands apart from other second number apps that cut corners on reliability.

Whether you're freelancing, running a small business, dating safely, selling online, or simply keeping work separate from personal life, Sideline - Second Number for a Business Line gives you the second phone line you need with the quality and features you expect. Start your free 7-day trial today.