Zoiper IAX SIP VOIP Softphone

Make crystal-clear VoIP calls anywhere with Zoiper IAX SIP VOIP Softphone, the lightweight, ad-free softphone built for professionals who demand reliability and efficiency.

Whether you're a remote worker, digital nomad, or business professional, Zoiper delivers high-quality voice communication over Wi-Fi, 3G, 4G/LTE, and 5G networks without draining your battery. Unlike bloated alternatives, this SIP and IAX protocol client runs lean, maintains excellent stability, and works seamlessly across all Android devices—even older ones benefit from its optimized HD audio engine.

Stay connected effortlessly with essential calling features built in. Use Bluetooth headsets for hands-free conversations, switch to speakerphone mode when needed, mute calls during sensitive moments, and put callers on hold without dropping the connection. Wideband audio support including G.711, GSM, iLBC, and Speex codecs ensures your voice always comes through crystal clear. You're in complete control of your communication experience.

For professionals who need more, Zoiper's optional subscription unlocks advanced capabilities. Enable video calls to add face-to-face connection, protect sensitive conversations with ZRTP and TLS encryption, and manage multiple SIP accounts for work and personal use. Transfer calls seamlessly, handle conference calls with multiple participants, and record important conversations for reference. Presence support lets you see when contacts are available or busy, while the auto-answer feature automatically picks up incoming calls—ideal for hands-free operations. The Message Waiting Indicator keeps you informed of voicemail notifications instantly.

Missed calls are frustrating. Zoiper's PUSH service subscription ensures you receive incoming calls reliably, even when the app runs in the background—essential for traveling professionals and those who can't afford to miss important contact. Enterprise environments benefit from Quality of Service and DSCP support, guaranteeing superior call quality on congested networks. Advanced codec support including G.729 and H.264 further optimizes performance for demanding use cases.

Important: Zoiper is a standalone VoIP softphone and requires an active SIP or IAX account with a VoIP provider—no calling service is included. Do not set it as your default dialer, as this may interfere with emergency calling. Download Zoiper IAX SIP VOIP Softphone only from official sources to ensure security and reliability. Experience VoIP calling the way it should be—simple, powerful, and always in your control.