Sideline: Second Phone Number

In-app purchases
62.5K reviews
Content rating
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image

About this app

Second phone number – at your fingertips. Sideline is the call and text app made for your smartphone – letting you divide your communications easily and without confusion. It’s time your phone service does more for you. Get text plus a second line to make calls and message without limits when you download today.

Cellular features without the high costs – Sideline is more than just a second line. It’s a flexible, personal communication app that gives you a different phone number to call, text, and manage your contacts. Our text app is used by tens of thousands of users as their calling app of choice to help them transform how they keep in touch. Use Sideline as your dedicated second phone line, with custom caller ID and robust communications tools that give you a new way to stay connected.

Unlike other texting apps, Sideline gives you a second phone line without the hassle and extra costs. Use your existing carrier and get a new phone number in no time. Start communicating with another phone line designed to organize your conversations and make life easy. Control your new number across different devices, text your friends, and even set reminders for calls you may have missed. Set up a voicemail and view caller ID – Sideline lets you do it all.

The calling and texting app designed for you. Download Sideline today to set up a second cell phone number with intuitive tools that help you stay connected and organized.


- Cellular reliability – Your second line includes all the features you’d expect
- From Caller ID to voicemail, our text plus call app has virtually everything a cellular phone has
- Set up a new custom phone number with a local area code
- Non-VoIP: All calls are cellular, so your second number is just as reliable as your primary one
- Calls use your existing carrier plan, so no extra calling credits needed for your second number

- Message anyone, anywhere at any time with your Sideline number
- Send unlimited SMS, MMS, and text messages to all of your contacts
- No more multiple text apps – Easily access your Sideline number online and text from another device

- Auto-Reply responds automatically with a custom private message, if you miss a call
- Set up a custom voicemail greeting and read transcripts of each message
- Transfer (or port) an existing number to your second line from another device or landline

- Text & call across devices: Split a Sideline number between multiple devices to access anywhere
- Communication reminders: Automatically set up a reminder for tasks related to a certain phone call
- Caller ID & more: Identify new callers, save contact details, and take notes after calls
- Message management: Save and reuse messages you frequently need to send

Sideline is a complete communication app, not just a second phone line! Download Sideline today and set up a 2nd phone number that keeps you connected wherever you are.

Privacy policy & terms of use
Updated on
Feb 6, 2023

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
This app may collect these data types
Personal info, Messages and 7 others
Data isn’t encrypted
You can request that data be deleted
62.5K reviews
Michael P
December 3, 2022
What started as a personal decision to find a safe, reliable alternative to my primary number for staying connected, quickly grew into a helpful, effective business resource. In 7 years, I've never had issues using Sideline, and when I've had questions, their support has been responsive. Sideline has come to my rescue countless times, in all kinds of situations, plus they frequently introduce updates, improvements, and new features without compromising how easy and functional it is to use.
102 people found this review helpful
Did you find this helpful?
Pinger, Inc
January 4, 2023
Hey again Michael, thanks so much for your kind words. It means the world to us to know that we've helped you and your business grow. If there's ever anything we can do for you, let us know at We'd be more than happy to help.
Joseph Fletcher
December 26, 2022
Unreliable business or second line! Absolutely no service on Christmas, up to even now. On the most significant holiday of the year, no service! I lost out on important calls and others who reached out because once again this app failed! And I'm paying an annual fee! Customer service wasn't limited, it was non-existent!! They were aware of same issue last month but no attempt to prevent it again. This, right after I paid another year's annual payment. There's other apps, don't waste your money!
24 people found this review helpful
Did you find this helpful?
Pinger, Inc
December 28, 2022
Hey Joseph, we're sorry to hear that you've been dealing with issues regarding service on Christmas. If you could please email us with any more info on when this problem started and if it's still going on at We'd be happy to help.
David Leis
December 14, 2022
Great app to have as a 2nd number on phone. I can keep my business phone no. separate from my personal number. Would be even better if it was also an app on PC like Skype which I hate but have to have for now. Customer service could be improved. Also do not like that I cannot copy a number from a number called it. Needs some user improvements to speed things up.
24 people found this review helpful
Did you find this helpful?
Pinger, Inc
January 4, 2023
Hi again David, thanks for your feedback. We'll be sure to relay it to our teams. In the meantime, if there's anything else we can do to make your Sideline experience a 5-star one, let us know at We want you to have the best experience possible.

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: