MizuDroid Android softphone -short description

MizuDroid is an unlocked VoIP softphone for Android mobile phones and tablets based on open standards, compatible with all VoIP providers, software and devices using the SIP protocol.

Initiate and receive free or low cost international calls via your preferred VoIP providers, PBX or your own SIP server. Mizudroid will deliver the best possible call quality for your environment by automatically adapting to your device/network/server and peers capabilities, ranging from HD audio to low bandwidth codecs and fine tuned media parameters.

For VoIP service providers we offer customized builds and integration with existing infrastructure.

MizuDroid works seamlessly with other Mizutech server and client side solutions, as well as with enterprise and carrier infrastructure equipment like Asterisk, Audiocodes, Cisco, CounterPath, Voipswitch, PortaBilling and others.

MizuDroid is free for non-commercial use. Search for "MizuDroid" in the Google Play (Android Market) from your phone or visit the link below.

Free Android softphone download from Google Play

Customized Android softphone for VoIP service providers


  • Based on Mizutech high performance SIP/media stack
  • VoIP calls with auto QoS using the SIP protocol standards (both incoming and outgoing calls)
  • Connects directly to your preferred VoIP server (no need for any intermediary media servers)
  • Android OS: all versions from 2.0
  • Connection: WiFi or mobile GPRS, EDGE, 3G, 4G (all above 15 kbits)
  • Transport protocols: UDP, TCP, TLS, HTTP, VPN (with VoIP tunneling and encryption)
  • Built-in tunneling and encryption (for both the signaling and the media)
  • Peer to peer encrypted media
  • Audio Codec: G.711 (PCMU and PCMA), GSM, Speex, iLBC, G.729 (G.729 is restricted in the free version), HD Audio/wideband
  • Video Codec: H.264, H.263 (beta)
  • Automatic fine-tuning (including codec selection) depending on your peer capabilities, network speed and CPU power
  • AEC (acoustic echo canceller), Denoise filter, AGC (automatic gain control), PLC (packet loss concealment), Silence suppression
  • Multiple accounts
  • Detailed or simple configuration
  • System phone-book
  • Call history
  • Call recording
  • Balance and rating display, call timer, status logs, detailed logs
  • Multi-tasking support -listening for incoming calls in the background
  • Speakerphone, Mute and Hold
  • IM (chat), SMS
  • DTMF (RFC2833 or INFO method)
  • NAT/Firewall support, stable SIP and RTP ports, auto QoS, light STUN protocol and auto configuration
  • Call park and pickup
  • Call transfer (attended and unattended) and call forward
  • Conference calls (built-in RTP mixer and transcoding when necessary)
  • DNS SRV record lookups
  • RFC’s: 2543, 3261, 2976, 3892, 2778, 2779, 3428, 3265, 3515, 3311, 3911, 3581, 3842, 1889, 2327, 3550, 3960, 4028, 3824, 3966, 2663, 3022 and other drafts
  • signaling and media engine is based on Mizutech’ proprietary next-gen SIP/RTP stack
  • Custom features
  • Branding for VoIP service providers

Customization and branding

The MizuDroid Android softphone includes features specifically designed for business and enterprise users, including:

  • Customization / branding / integration
  • ITSP/Operator/Enterprise Features
  • Extra options, all voice codec's including HD audio
  • Optional tunneling and encryption
  • Mizutech support services

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What is an Android softphone?

An android softphone is a software program for android devices allowing users to connect to a VoIP server and make calls to other VoIP users or to landline and mobile networks usually for lower prices than the native GSM calls.