Sideline - Second Phone Number

Sideline - Second Phone Number application logo

Sideline® is more than a 2nd number. It’s a communication app that helps you work efficiently, connect with customers, and collaborate as a team. Professionals choose Sideline for its unmatched reliability and feature-rich interface that separates work from life. It comes with all the calling, texting, and voicemail features you need to start, run, or grow your business.

Try it risk free for 7 days. Then subscribe to a monthly or yearly plan and let Sideline pay for itself in happy customers and new business opportunities. There are no contracts so you can cancel anytime.


AUTO-REPLY – If you miss a call, Sideline responds automatically with a text or MMS.

TEAM NUMBER – Split one number with multiple devices so your team can be more responsive.

CUSTOM NUMBER – Build your identity with numbers such as “(555) PET-SHOP,” or “(555) FLOWERS.”

LOCAL AREA CODE – Search area codes to find a local number for your company.

BUSINESS TEXTING – Text-enable your business to easily connect with customers.

ENTERPRISE DASHBOARD – Manage company numbers on employee devices. (Enterprise account required. See for details)


CARRIER RELIABILITY – All calls are cellular (not VoIP) to make your 2nd number as reliable as your 1st.

UNLIMITED CALLING – Calls use your existing carrier plan. No extra calling credits needed.

MESSAGING – Texting includes SMS, MMS picture messaging, group messaging, and more.

CUSTOM CALLER ID – It’s clear which number is ringing so you can prioritize accordingly.

SEPARATE VOICEMAIL – Record a professional greeting or set up multiple for any circumstance.

VOICEMAIL TO TEXT – Save time and conveniently read voicemail transcriptions as a text.

DO NOT DISTURB – Send Sideline calls directly to voicemail on nights, weekends, or holidays.

NUMBER PORTING – Transfer an existing number to Sideline from another device or landline. 

WEB MESSAGING – Access your Sideline number online and text from the desktop.


The required Sideline subscription is $9.99/month or $99.99/year. This subscription and other optional in-app subscriptions are automatically billed monthly or annually to your iTunes Account and auto-renew, unless you turn off auto-renew at least 24-hours before the end of the current period. Payments are charged to your iTunes account upon confirmation of purchase. You can turn off auto-renew or manage subscriptions in your iTunes & App Store account settings. Cancellations take effect at the end of the active subscription period. Any unused portion of a free trial period is forfeited when purchasing a subscription.

Privacy policy & terms of use:

Sideline - Second Phone Number App Description & Overview

The applications Sideline - Second Phone Number was published in the category Business on 2015-08-25 and was developed by Pinger, Inc.. The file size is 109.13 MB. The current version is 3.25 and works well on 10.0 and high ios versions.

In addition to regular performance updates, we fixed a couple issues affecting certain iPhone displays:
• iPhone X users: You can now, as intended, view or zoom in to a full-screen photo and be able to easily find the "x" icon to close it.
• iPhone 6/7 Plus users: The Info Bar at the top of your Inbox will no longer disappear randomly. Sorry about that.

Check back in a couple weeks for another round of Sideline improvements.

Sideline - Second Phone Number App Tips, Tricks and Rules

Sideline - Second Phone Number Reviews

Gerry DuBuque

Awesome!  Gerry DuBuque  5 star

I love this app! It is reliable, easy to use, and has better features than apps like it. Keep up the good work!

Floyd Bogan

Awesome Phone Application  Floyd Bogan  5 star

Used the app for the last 6 months - one of the best Sideline apps available. Highly recommended!

Amaya Hirthe

It is the best I have found.  Amaya Hirthe  5 star

Keeps your phone number for those who are supposed to have it. Everyone else gets one you make

Michele Beatty

Works great!  Michele Beatty  5 star

I consistently use the app for whenever I don't feel like giving my number out such as craigslist, sales calls.

Nola Windler

Great  Nola Windler  5 star

It's perfect, safe and easy to use. This app is perfect for those who don't want to give out their personal phone number.


App doesn’t work  cruzz34  1 star

I’m getting billed but not working on my phone so I had to cancel my card


Great service  Ominay287  5 star

I use the sideline number for my business calls. My company suggests a second phone, a work phone but I barely remember to carry one. The calls are always clear unlike a different service we tried before. The text interface works great. I love the options to auto reply, and voice to text. The only thing I wish could be improved is, I can not use the sideline on my Apple Watch series 3. I can see a call is coming in, but can not answer it and I can see and read a text but can not reply. If that is something sideline could add I’d be sold for life. Aside from the watch, which i am not even sure sideline has control over this app has helped me with my job.


Sideline Inconsistent  ZoomzoomSF  2 star

If you are getting a line for your business look elsewhere. Buggy and there numbers require even local customers to dial +1 area code. Support bites and escalation to a manager is next to impossible


Love it but there is room for improvement  Lgphotographyy  4 star

I love the app and the fact its an actual number. I just wish it was more developed for customers. In my business I don’t save clients names all the time so I depend on the search bar to find people or conversations, or sometimes i will look for specific conversations but cant find it because calls and txts are combined. Little things like that would make this app worth so much more


Sideline app  dking4403  1 star

I continue to have numerous issues after an update where the app cannot “read” my address book fast enough to identify a caller. As I write this, I have an open issue right now that’s been pending now for some 4 months. I get a “how are we doing” Email monthly and I continue to tell them it’s not fixed. At one point, it worked great...but then here comes the updates which continue to hose everything. Support is clueless....but they still manage to charge me monthly for something that doesn’t work as intended.

Sideline - Second Phone Number Comments

Sideline - Second Phone Number Business Download