InstaVoIP

InstaVoIP for Android was created using the InstaVoIP Mobile SDK, an optimized Voice-over-IP (VoIP) solution for Android from Unicoi Systems.

Our team is comprised of hardware and software engineers with over 100 years of collective experience. All of our engineering work is done by Unicoi Systems engineers, located in the United States.

InstaVoIP for Android is a standalone softphone that requires a SIP server or subscription with a SIP-based VoIP provider to make calls.

InstaVoIP features include:
- WiFi and data connection compatible softphone with excellent voice quality over both.
- Multi-tasking support, enabling users to background InstaVoIP and still receive incoming calls while performing other tasks.
- Direct interface into your existing address book to easily add choose a contact for an outgoing call.
- Favorites list for easy one-touch dialing of frequently used numbers.
- Speakerphone, mute, hold and DTMF capabilities.
- Swap between and transfer two separate calls.
- Conference together any number of participants, limited by device resources and bandwidth limitations.
- Call History with detailed information for received, missed and outgoing calls.
- STUN for network traversal.
- Noise reduction, acoustic echo cancellation and VAD for better media quality and efficiency.
- Quality of Service

Audio Codecs Supported:
- G.711 uLaw/aLaw
- G.722
- G.726 (16/24/40kbps and fixed payload)
- DVI4 (HD and Narrowband)
- Linear PCM (normal and HD in addition to Little Endian support for both)
- iLBC
- SPEEX (Narrowband and Wideband)
- SILK (Narrowband and Wideband)

WARNING:
While InstaVoIP for Android will work over 3G with correct Transport and STUN settings, some mobile network operators may restrict VoIP functionality over their network or charge additional fees. Unicoi Systems, Inc. is not liable for any charges, fees, or liability imposed by your carrier for use of VoIP over 3G/LTE.