SIPhone
VoIP calling for Sipona
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Free
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About
SIPhone is the SIP calling client for your Sipona line. Make encrypted HD-quality calls right from your iPhone — incoming calls ring natively through the iOS call UI, even when the screen is locked.
• Encrypted calling (TLS/SRTP) and HD voice
• Incoming calls via CallKit — ring in the background too (PushKit)
• Sign in with e-mail and password — that's it
• Call transfer, blind or attended
• Call waiting and switching between calls
• Phonebook & caller ID, per-call number withholding
• Interface in 24 EU languages
SIPhone is built on open-source software (baresip) — licenses are viewable in the app.
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What's New in SIPhone
7.2
September 17, 2026
• Calls now arrive reliably after a network change (Wi-Fi ↔ mobile, new IP address) – the app renews its connection itself. • An ongoing call survives the network change. • Call waiting: answer a second call, switch between the two calls and transfer – right from the iPhone call screen. • Calls kept on hold for a long time no longer drop when resumed. • Dialpad and line list show a single number; all numbers are in the line settings. • Redial: with an empty field, the call button recalls the last dialed number. • Keypad tones are audible again when dialing and during calls.
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