Sideline: 2nd Phone Line App

In-app purchases
3.9
63K reviews
5M+
Downloads
Content rating
Everyone
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About this app

Sideline gives you a premium second phone number with reliable text and call quality you won’t get with other calling apps. With unlimited calling and texting, your new second number from Sideline will work just like your first—no wifi connection needed. Just pick your local area code, then text and call from wherever you are using your phone’s cellular signal. Sideline is part of the Pinger family of communication apps, which includes the popular Index and TextFree. To date, Pinger apps have been downloaded more than 160 million times and powered billions of conversations for consumers, professionals, and small businesses.

Sideline is one of the most trusted calling apps that tens of thousands of people rely on daily to manage their calls and text messages separately from their main phone number. Sideline’s patented technology powers reliable, carrier-level call quality that guarantees your phone calls and text messages will go through on time, every time.

Send text messages and place phone calls without wifi while keeping your personal phone number separate. Whether you’re using your second number for online privacy, professional services, or simply to keep communication organized, Sideline gives you the tools and features you need.

With Sideline, you’ll get more than just a second number; you’ll get a full-featured calling and texting app that lets you organize your contacts, reply automatically to missed calls with a text message, and much more. Download Sideline today!

SIDELINE FEATURES:

Second Number + Local Area Code
- Get a local phone number, or select the city and area code of your choice
- Call without wifi! Sideline phone calls and texts work with 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
- Automatically reply to missed phone calls with a customizable text message
- Share photos, videos, and GIFs from a reliable 2nd number
- Assign “Favorite” contacts for ease-of-use

Full-Featured Second Phone Line
- Create a custom voicemail greeting and read transcripts of voice messages
- Calling and texting tools available on multiple devices to stay in touch at any time
- Identify new callers, save contact details, and take notes about your conversation
- Incoming calls are clearly labeled as Sideline calls, so you know when you’re receiving a call to your second phone number, and not your main number.

Sideline gives you everything you have with your primary number and more, in a second number calling app that you can trust to always get the message across. Download today and begin your second phone line experience with a free 7-day trial.

Privacy policy & terms of use
Updated on
11 Aug 2025
Events and offers

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
App info and performance and Device or other IDs
This app may collect these data types
Personal info, Messages and 7 others
Data isn’t encrypted
You can request that data be deleted

Ratings and reviews

3.9
62.8K reviews
Reiko
14 May 2025
Went above and beyond to fix my problem. Is it a perfect service? No, none are. But every time I have reached out, their help desk has responded within one or two minutes. And this time it was not an easy fix. Over the course of three or four days, I had several different people from the help desk working on fixing this issue (meanwhile, my phone was working fine, it was just not showing caller id for inco.ing calls). They stayed with me until the solution was found. That means alot.
29 people found this review helpful
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Pinger, Inc
14 May 2025
Hey there, we're happy to hear that our team has been able to help solve any issues you've experienced with our service. Thank you so much for your fantastic feedback. If you ever need anything from us, please feel free to reach out at reviews@sideline.com.
DJ Hard Cor Productions
22 April 2025
When receiving calls the phone won't ring so if you're not looking at the phone you won't know you have a call til later on when you go to use the app for a text or something you see you have a missed call notification on a particular contacts bar on your phone screen. (4/22/25) Update: I appreciate the attention to customer concerns. The correction has been made and no more missed calls! I also enjoy the new features available now.
17 people found this review helpful
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Pinger, Inc
22 April 2025
Hey there, we're glad to hear that we have been able to help with any trouble you may have encountered while using our service. If there's anything else we can do for you, please feel free to reach out at reviews@sideline.com.
Jodi Prisk
26 July 2025
I love this app. I have used it for almost 10 years. when it was free even. ow having to pay a monthly subscription. I can log in on any device and all my texts and calls will come to that device. it has a search option and it will search thru all ur conversations. I also can pull up any conversation I've had the past 10 years. this is a great 2nd number app. I've used other apps like text now and burner phone this app is like using a carrier quality. those apps don't compare to sidelines.
4 people found this review helpful
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Pinger, Inc
28 July 2025
Hey Jodi, we're grateful to hear that you've been using our service for almost 10 years now. Thank you so much for your feedback on Sideline. We genuinely appreciate your kind words. If there's anything we can do for you, please feel free to reach out to us at reviews@sideline.com.

What's new

Better. Faster. More Reliable. That's our motto for every update. And in this release, performance updates make Sideline all of those things.

If you're enjoying the app, please leave us a rating or review. Need help? Email us at: AndroidHelp@sideline.com