Call your friends on VoIP. MizuPhone is a free customizable SIP softphone that lets you call your friends using any VoIP provider. Supported features:-initiate and receive VoIP calls and chat over any connection above 15 kbits (GPRS, EDGE, WiFi, 3G, 4G, 5G)-SIP over UDP and TCP-All the popular VoIP codecs are supported with echo cancellation-PBX features such as DTMF, hold, transfer, conference, caller-id, call-wait, credit and rating display-Integration with server API such as new user registration, callback, SMS and others-Optional branding and customization

MizuPhone alternatives

Vippie - free calls & messages

With Vippie you can connect with other users for free. This cross-platform app supports HD audio and video. Be a part of the Vippie community Like us on Facebook: https://www.facebook.com/VippieByVoipswitchLearn more about Vippie at: https://www.ivippie.com

iSip -VOIP Sip Phone

iSip, formerly sipphone. This is the first general sip client for iPhone. When the per-account prefix is not set, the prefix in setting will be used, it works for all callsDont hesitate to contact our support if you have any questions about this app.

Media5-fone SIP VoIP Softphone

IMPORTANT:Media5 Corporation announces the End-of-life (EOL) of the Media5-fone SoftClient on all platforms, including Media5-fone Free, Media5-fone Pro, and Media5-fone MPS, starting on August 31, 2018. Until then, support will be limited to fixing selected bugs and no new improvements or support on Operating System (OS) versions will be done. Please ask your mobile network operator before enabling the VoIP over 3G feature.

JusTex

JusVoIPsipIP-PBX,IMS:- JusTex,SIPSIP:- - IP- : AMR-WB, G729, AMR, iLBC, PCMU, PCMA, G722, iSAC, opus- ,,DTMF,,,- ,VAD()QoS:- VP8, H264, H264-SVC- Wi-Fi, 3G, 4GLTE

Linphone

Linphone is an open source app offering free audio/video calls and text messaging. With Linphone, you can be reachable at any time, even if the app is closed, with a WiFi or 3G/4G internet connection. Contact Belledonne Communications www.belledonne-communications.com for any specific development query.