IMSDroid is the first fully featured open source SIP/IMS client for Android. It is also the only free Android SIP client which supports direct Video Calls.
3GPP IMS (IP Multimedia Subsystem) is the next generation network for delivering IP multimedia services. IMS is standardized by the 3rd Generation Partnership Project (3GPP). IMS services could be used over any type of network, such as 3GPP LTE, GPRS, Wireless LAN, CDMA2000 or fixed line.
The current version of IMSDroid partially implements GSMA Rich Communication Suite release 3 and The One Voice profile V1.0.0 (LTE/4G, also known as GSMA VoLTE) specifications.
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Supported operating systems:
Google Android 1.5, Google Android 1.6, Google Android 10.x, Google Android 2.0, Google Android 2.1, Google Android 2.2, Google Android 2.3, Google Android 3.0, Google Android 3.1, Google Android 3.2, Google Android 4.0, Google Android 4.1, Google Android 4.2, Google Android 4.3, Google Android 4.4, Google Android 5.x, Google Android 6.x, Google Android 7.x, Google Android 8.x, Google Android 9.x
Scydo Free Calls With Scydo you can call free from/to android AND iphone Scydo users!
TeamSpeak 3 for Android TeamSpeak 3 for Android - TeamSpeak is a cross-platform VoIP software, operating under a client-server architecture, that allows you to enjoy voice group chats with other users in real-time
toolani global toolani global - No matter if you’re staying home or abroad, with toolani wifi you’re calling from as low as 1 cent per minute – with no roaming charges at all! toolani wifi works with state-of-the-art web 2.0 technology and provides best call quality to over 230 countries
S-unno S-unno - With S-unno, you can make phone calls to any fixed or mobile number in more than 200 countries at absolutely low rates. Rates start from as low as US 2cents/minute. S-unno uses your 3G or WiFi connection to place these calls so that you can start saving now
YunGO - Cheap International Calls YunGO - Cheap International Calls - YunGO will give you a possibility to do very cheap international calls worldwide. Check quality of service yourself with $0.5 initial balance, before you top up your account. Beside cheap calls you will have a lot of features in one place
BigTinCan (Android) BigTinCan delivers VoIP calling rates on your mobile on your normal cell network - and flat rate domestic and international SMS and MMS services
Talk360 - Cheap Calls Talk360 - Cheap Calls - Over 4 million people worldwide use Talk360 to stay in touch with friends and family, keep costs low on their travels or use as a back up for when their contract minutes run out
Yelo : Cheap Calls Worldwide Yelo : Cheap Calls Worldwide - Use the Yelo App to make cheap calls to anyone, anywhere in the world on their normal mobile or fixed landline numbers. No more shock phone bills!
Enjoy low rates up to 99% cheaper than your network operator and over 50% cheaper on average than other calling services including SkypeOut, Rebtel or Jajah
Newik Premium Voice + DIDs Newik Premium Voice + DIDs - FREE Calls to India mobile and landline
FREE Calls to USA mobile and landline
FREE Calls to UK landline
Premium Voice with Caller ID
Show your mobile number when you call, so people know it's you
Other Software by developer «Dooubango»:
IMSDroid 1.2.366 IMSDroid 1.2.366 is the first fully featured open source SIP/IMS client for Android. It is also the only free Android SIP client which supports direct Video Calls.
3GPP IMS (IP Multimedia Subsystem) is the next generation network for delivering IP multimedia services. IMS is standardized by the 3rd Generation Partnership Project (3GPP)
IMSDroid IMSDroid is the first fully featured open source SIP/IMS client for Android. It is also the only free Android SIP client which supports direct Video Calls.
3GPP IMS (IP Multimedia Subsystem) is the next generation network for delivering IP multimedia services. IMS is standardized by the 3rd Generation Partnership Project (3GPP)