Sideline is a calling and texting app that allows users to manage their calls and text messages separately from their main phone number. It uses patented technology to ensure reliable, carrier-level call quality for all calls and texts. With Sideline, users can send text messages and make phone calls without wifi, while keeping their personal phone number separate. This can be useful for maintaining online privacy, using a separate number for professional services, or simply organizing communication. In addition to a second number, Sideline offers a full-featured calling and texting app with tools to organize contacts, automatically reply to missed calls with a text message, and more. It also includes features such as voicemail, caller ID, and premium call quality. Some of the powerful communication tools available on Sideline include the ability to share photos, videos, and GIFs from a reliable second number, as well as the option to assign "Favorite" contacts for easy access. Users can also create a custom voicemail greeting and read transcripts of voice messages. Sideline is available on multiple devices, allowing users to stay in touch at any time. Incoming calls are clearly labeled as Sideline calls, so users can easily distinguish between calls to their second number and their main number. The app also offers a free 7-day trial, giving users the opportunity to experience all of its features before committing to a subscription. Sideline is a trusted and reliable option for those in need of a second phone line, providing all the features of a primary number and more.