Sideline: 2nd Phone Line App

Communication
3.9
Sideline: 2nd Phone Line App
Sideline: 2nd Phone Line AppSideline: 2nd Phone Line AppSideline: 2nd Phone Line AppSideline: 2nd Phone Line AppSideline: 2nd Phone Line AppSideline: 2nd Phone Line AppSideline: 2nd Phone Line AppSideline: 2nd Phone Line App

Installs

5,000,000+

Price

Free

Developers

Pinger, Inc

Content Rating

Everyone

Android Version

9

Version

13.4

Sideline: 2nd Phone Line App APP Review

Sideline: 2nd Phone Line App is your go-to solution if you're looking to maintain a separate phone number without the hassle of carrying an extra device. With the capability to make unlimited calls and send texts using your second number, this app stands out for its reliability and quality.

One of the best features of Sideline is its carrier-level call quality, ensuring that your conversations are clear and uninterrupted. It operates without needing a WiFi connection, which means you can stay connected even in areas with poor internet service. The app is designed to help users, whether for personal privacy, business communication, or simply keeping one’s digital life organized.

In addition to providing a second number, Sideline includes various features like voicemail, customizable greetings, and the ability to organize contacts efficiently. Missed a call? No problem! You can set up automatic text replies to keep the communication flowing. It’s these nifty tools that make Sideline a reliable choice for anyone with a dual communication need.

Despite its many strong points, some users have reported issues with call notifications and account access. Make sure to read the app's policy on phone number changes; losing access to your account when changing numbers can be a significant drawback for some.

In conclusion, Sideline is a strong app for anyone needing that extra layer of communication privacy or organization. With its user-friendly features and solid performance, it could very well meet your second number needs. Try out the free trial for seven days and see how it fits into your daily life!

User Reviews from Google Play Store

Wy Wakefield

Wy Wakefield

Jan 14, 2026
(5)

I love this app. I own a yoga studio so we're only open a short while before and after class and Sideline allows me to answer the phone from mine anywhere.

Version: 13.8.2

Developer Response

Hi Wy! It's fantastic to hear how the app fits seamlessly into your busy schedule! Balancing a yoga studio is no small feat, and we're delighted it's helping you manage your calls effectively. Thank you for your wonderful feedback!

JD Smith

JD Smith

Jan 14, 2026
(1)

I canceled this service 2 years ago. Well 2 years ago I got charged again for the year. I called and said needed a refund and to cancel it. Well low and behold I got charged again. Not to mention the line was stagnate and not even an ap on my phone anymore before the renewal 2 years ago. Meaning it still isn't. I dont even know the # nor do I know how to get ahold of them. I tried cancelling through subscriptions this time. Who knows. Maybe someone calls, and refunds 2yrs of unused service!

Version: 13.4

Developer Response

Hey there, we're sorry to hear about this. We want to apologize for any headaches this may have caused you. Please reach out to us at reviews@sideline.com with a screenshot of the receipt for one of these charges. We'll look into this further from there.

RH J

RH J

Jan 10, 2026
(1)

doesn't work or let get number gives me error 6125

Version: 13.8.2

Developer Response

Hey there, the error code you've received relates to registration failure because you’ve exceeded the number of accounts that can be created. Please log in to an existing account rather than creating a new one. If there's anything else we can do for you, email us at reviews@sideline.com.

Pastor Walt Smith

Pastor Walt Smith

Jan 5, 2026
(5)

Great customer service..over and above

Version: 13.8.2

Developer Response

Hi Pastor Walt Smith! We're grateful for your kind words and glad to hear our service exceeded your expectations! Thank you for taking the time to share your experience.

Bryan Martin

Bryan Martin

Dec 28, 2025
(1)

couldn't even create an account.. got some error code

Version: 13.8.2

Developer Response

Hey Bryan, we're sorry to hear about this trouble with using our app properly. We'd love to help investigate any issues you've been experiencing, so please don't hesitate to reach out to us at reviews@sideline.com. We'll see what we can do to help.

Pros

Carrier-level call quality
Unlimited calling and texting
No need for WiFi
Strong privacy features

Cons

Inconsistent call notifications
Account access issues when changing numbers
Occasional app glitches
Sideline: 2nd Phone Line App

Sideline: 2nd Phone Line App

Communication
3.9

Comments