Sideline: 2nd Phone Line App

In-app purchases
3.9
62.9K 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
27 Jun 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
62.7K reviews
J J
5 February 2025
Samsung phone, keypad vibrates phone on every push, but it has 1/4 second delay. Settings need option to disable vibration. After I make call, the phone goes into screen that appears to be for text messaging. I'm novice/new to Sideline, but no option located for what app should do after I place call. Another gripe is when I open app, there should be option to set the default area user wants to go to (in my case, the keypad). Im hoping these features are made available pronto
7 people found this review helpful
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Pinger, Inc
7 February 2025
Hey there, we're sorry to hear about this trouble while using our service. We'd love to help investigate this further so, please reach out to us at reviews@sideline.com. We'll see what we can do to help.
Johnny Deaux
21 June 2025
This is my 1st ever review. It is truly terrible. Call quality is sporadic and there is a lag on every single call. texts don't go through half the time and there are instances where I receive texts days later. I can hang up from a terrible quality call and immediately call that person right back from my main number and the call quality is perfect. I'm constantly having to contact customer service and only get excuses. I strongly suggest NOT using sideline. I'm going to port my number elsewhere.
3 people found this review helpful
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Pinger, Inc
23 June 2025
Hey Johnny, we're sorry to hear about this trouble properly using our app. We'd love to help investigate any calling and messaging issues you've experienced while using Sideline, so please reach out to us at reviews@sideline.com. We'll see what we can do to help.
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.
19 people found this review helpful
Did you find this helpful?
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.

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