• Benefit from high quality video codecs (H.264, H.265 and VP8)
• See a preview of your video and move it as desired
• Switch between the front and back cameras to show what you want
Tap the keyboard to perform your search
Linphone is an open source SIP phone for voice/video calls and instant messaging, and is available for mobile and desktop environments.
Many new features are still under development on a medium- or long-term basis. Please feel free to contact us if you want to know more about our development roadmap, or if you are interested in financing the development of a particular feature.
• Benefit from high quality video codecs (H.264, H.265 and VP8)
• See a preview of your video and move it as desired
• Switch between the front and back cameras to show what you want
• Share any kind of content, including audio and video files, pictures, documents, vCards etc., directly from the file repository or attached to a message.
• See clear message delivery status
• Access the chat view from the call window to send chat messages during a call
• Receive notifications of incoming messages, with "reply to" and "mark as read" options
• Create text sessions with multiple participants
• Send and receive messages from several devices
• Use end-to-end encryption to secure your group conversations
• Easily manage participants and admins using the “Group info” view
• See detailed message delivery statuses
• Receive notifications of group events (users joining or leaving, new admins etc.)
• Enjoy Linphone’s state-of-the-art R&D :
• An innovative jitter buffer algorithm, which quickly adapts to network conditions with high levels of jitter and improves control of the audio latency
• Enhanced codec bitrate control via the detection of network congestion and automatic adaptation to the available bandwidth
• Echo cancellation 48 KHz
• Display advanced quality statistics on demand
• Benefit from secure user authentication with TLS certificates
• Make encrypted audio and video calls with SRTP, STRP-DTLS or ZRTP
• Secure your messages with Linphone’s powerful end-to-end encryption protocol. Users can privately and asynchronously exchange messages, so that only you and your friend can decrypt the content that you have shared. Available for one-to-one messages and group conversations.
Linphone’s address book comprises a smart contact list that clearly indicates which of your friends can be contacted via the app.
Linphone synchronises with your smartphone’s address book and automatically tags contacts who have a SIP account with a Linphone icon. You can also filter your contacts to display only Linphone users.
The “Link your account” function allows you to link an existing account with a phone number, for better identification of Linphone users. The list is updated as new users register with the service.
You can handle several calls at a time, for example:
• Pause and resume calls
• Transfer calls
• Merge calls into a single conference call
• Receive notifications of incoming calls while already on a call
Since Linphone supports push notifications from Apple and Google, you will be notified of incoming calls and text messages even if the Linphone app is inactive or not in the foreground.
• Answer or decline incoming calls directly from the lock screen
• Reply to or mark as read incoming messages without opening the app
• Use the double call screen between a Linphone call and a GSM call
• Answer Linphone calls directly from a Bluetooth device
© Copyright 2020 - Linphone - Belledonne Communications SARL