If you are looking for the Best Android Softphone App to download for free, look no further.
Our expert panel of reviewers has tested dozens of apps and we have compiled a list of the 3 Best Android Softphone App that passed our tests.
Check out our list of the 3 Best Android Softphone App, tried and tested by our expert reviewers.
3 Best Android Softphone App
1. Google Duo
Make calls between Android and iOS
Whether you’re on your phone, tablet, or on the web, you can stay in touch with Duo. You can also share and join group calls with just a link.
Group call with up to 32 people
Bring together all the people who matter most, even when you’re apart, with group calling. Duo now supports 32 people in group video calls.
Bring everyone together with Family mode**
Doodle on video calls and surprise loved ones with fun masks and effects that transform you into astronauts, cats and more.
Capture special moments
Take photos of your video calls to capture any moment and share it automatically with everyone on the call.
Send video and voice messages, photos, and more
Short on time or your friends can’t pick up? Leave a personalized video message with fun effects, or share voice messages, photos, notes, and emojis.
Low Light Mode
Duo lets you make video calls even in poor lighting conditions.
Make voice-only calls to your friends when you can’t chat over video.
*Based on Signals Research Group technical study comparing video degradation time over 3G, LTE, and WiFi.
**Requires sign-in with a Google account.
***Data charges may apply. Check your carrier for details.
****Specific feature availability may vary based on device specifications.
*****If your Android TV does not have a built-in camera, you will need to connect a USB camera and microphone to your Android TV device.
******Duo works on Android TV devices with Android 8.0 or higher.”
2. Zoiper IAX SIP VOIP Softphone
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
– 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
– DNS SRV
– Built-in echo cancellation
– STUN support
– Change ringtone per account
– Call waiting
– Video support (gold users only)
– ZRTP / TLS support (gold users only)
– Call Transfer (gold users only)
– Wideband audio (gold users only)
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 dialing 911 emergency services.
WARNING: Please use only versions from the appstore, 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.”
3. MizuDroid SIP VOIP Softphone
The app doesn’t include any VoIP service. You are free to configure it to be used with any SIP server or service provider.
Note1: You will need to have a SIP account to be able to use this softphone and calls to mobile/landline phones might cost you money. See your VoIP service provider for the exact terms and pricing.
Note2: The softphone might try to run in the background and request to ignore battery optimizations only if push notifications are impossible in your network, for example if your SIP server is on private IP and doesn’t support push notifications.
-The VoIP phone can be used with any VoIP service provider, any softswitch or PBX, including Asterisk, voipswitch, 3CX, Cisco, FreePBX, Elastix, OpenSIPS and others.
-Compatible with all IP phones and SIP dialers such as Acrobits, Bria, Linphone, Zoiper or CSipSimple
-Works on any network above 12 kbits (3G, 4G, LTE, 5G, WiFi, others).
-Not another csipsimple/sipdroid clone (SIP client stack made by Mizutech from scratch based on Mizutech AJVoIP Java SIP and media stack)
-Free for non-commercial usage. No advertisements.
-Auto adapt to your environment (device/CPU/network/server and peers capabilities)
-Minimal CPU and battery usage. File size is below 8 MB and contains all SIP signaling and media features.
-Multiple SIP accounts (from advanced settings -> general settings)
-Multiple lines (simultaneous calls)
-Push notification support direct to SIP server or via FCM
-Call divert: mute/hold/forward/transfer/conference
-HD Audio, wideband and all common audio codec: Opus, Speex, G.729, GSM, iLBC, G.711 (PCMU/PCMA),
-Enchanted audio quality: AGC, AEC, PLC, noise reduction, silence suppression
-NAT/firewall traverse capabilities (with STUN, ICE, tunnel and related technologies)
-IM (chat), video, DTMF (RFC2833, SIP INFO and in-band), Voicemail, Voice recording, Balance display, Caller ID, Number rewrite rules
-Transport protocols: UDP/TCP/TLS. Support for DNS SRV
-VoIP tunneling and encryption (optional/automatic) with auto transport selection: UDP/TCP/TLS/HTTP/VPN (VoIP over HTTP)
-Call recording and file transfer
-Presence, BLF, contacts sync
-Peer to peer encrypted VoIP media
-VoIP to native dialer integration (optional) and integration with the native contact list
-Handle incoming calls while in sleep or doze (with push notifications or running as service if push is unavailable)
…and many more
Branded softphone builds with customizations are available for VoIP service providers and companies.
Use the forum to submit any bug reports or suggestions:
Softphone user guide:
Visit the homepage for more details about this SIP client: