Zoiper IAX SIP VOIP Softphone

In-app purchases
72.7K reviews
Content rating
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About this app

Zoiper is a IAX and SIP softphone application for VoIP calls over 3G, 4G/LTE, 5G or WiFi. There are no advertisements.

For support please visit: http://community.zoiper.com

Zoiper softphone offers a simple user interface and superb audio quality for smooth Voice over IP experience.

Contact us for whitelabel versions with your logo and company or for our VoIP SDK if you want to build your own solution or visit http://www.zoiper.com/en/voip-sdk

Available for both SIP and IAX systems, Zoiper is a phone solution perfectly fit for end users, service providers, call centers or any business willing to benefit from VoIP communications.

Want to distribute it to your users? Use the free automatic provisioning system on http://oem.zoiper.com and avoid tedious manual configurations!

IMPORTANT: Zoiper softphone is a standalone client-side software VOIP phone application and is not bundled together with a VoIP service. To make and receive VoIP calls using Zoiper, you must subscribe to any SIP or IAX based service provider across the globe.

Zoiper's key features include:

- Support for different color schemes
- Bluetooth support
- Lowest battery usage with highest reliability / stability on google play
- Lowest latency of all android softphones
- Excellent audio quality, even on older devices
- Supports calling over 3G and WIFI
- Multiprotocol with SIP and IAX support, compatible with all RFC
compliant PBXs
- Background / multitasking support
- Integration with the native android contact list
- Speakerphone mute and hold
- UDP and TCP transports (use TCP for better battery life!)
- Supports g711 (ulaw, alaw), speex, iLBC and gsm codecs
- Supports sending of DTMF
- Built-in echo cancellation
- STUN support
- Change ringtone per account
- Call waiting
- Video support (with subscription)
- ZRTP / TLS support (with subscription)
- Call Transfer (with subscription)
- Wideband audio (with subscription)

Zoiper is also available as customized branding solutions or VoIP SDK, please contact us for more information.

- Phones that are unstable because they have broken audio implementations:
Alcatel one touch series (poor audio drivers cause system freezes and crashes)
HTC one m8 (causes freezes.)

WARNING: using Zoiper as a default dialer may interfere with dialling 911 emergency services.

WARNING: Please use only versions from the Google Play Store, we have reasons to believe some of the (russian) .apk files floating on the web contain a trojan that might steal username and password and make fraudulent calls. The official Zoiper from Google Play is safe to use.
Updated on
Jun 29, 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.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
Personal info and App info and performance
Data is encrypted in transit
Data can’t be deleted

Ratings and reviews

69.8K reviews
Christopher Miller
July 7, 2023
Unstable and full of annoyance. Why would I buy the full version when the demo has serious bugs and they won't let me submit questions about the free version on their site (even though they direct me to). For one, if you go into a cellular dead zone, it fails to reconnect when you emerge, and the only remedy is to terminate the app entirely and restart it.
7 people found this review helpful
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Securax LTD.
July 11, 2023
Could you please contact us via our contact form so we can assist you with your issues: https://www.zoiper.com/en/contact
A Google user
December 20, 2018
Purchased Gold in 2016. Nearly every time there has been an update since, the Premium features get disabled and I need to "jump through hoops" to get it to start working again. Really, really, really frustrated with this! ***Updated Part*** In response to the reply from developer...That is exactly my point. This is the answer we get year over year. I have had to go through that same troubleshooting over and over, and it still breaks with updates. Why should I have to keep uninstalling it and re-entering my SIP accounts to fix your licensing issue? With a degree in Computer Network Admin, I assure you I know to "turn it off and on again" and have Force Stopped it many many times. Instead of giving the same canned answer for years, please correct the problem which causes it to break in the first place.
45 people found this review helpful
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Securax LTD.
December 20, 2018
Unfortunately there is nothing else we can suggest. The in-app purchases are handled directly by google since november 2014. There is nothing for us to fix, nor do we seem to have problems with other customers, we'd refund your purchase but google play does not allow refunding purchases over 6 months old.
Jon Gaskell
November 16, 2020
Overall I'm pretty satisfied with Zoiper. It's stable, and the call quality is usually pretty good. It usually runs reliably in the background on my OnePlus 7 Pro and doesn't seem to have a significant negative impact on battery life. Phone calls come through reliably even when I haven't used the app in a while. Overall the app has been stable, and I'm satisfied. I haven't had a good reason to look for another SIP client. Feature rich for those that require advanced setting control for those who need it, supports TLS encryption for calls which is a plus for me. The only problem that I have is that it doesn't seem to launch the Zoiper app/service when the phone restarts even though I've selected the option within the app to have it do so. I have to manually open the app at least once. Annoying when this causes you to miss a call, but after you launch the app it seems fine and stays connected.
22 people found this review helpful
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Securax LTD.
November 17, 2020
Thank you for your feedback, Jon!

What's new

Fix notification and phone permission requests not appearing
Crash fixes