Your business line, everywhere you are
One app for calls and texts on your NextIP numbers. It rings like a real phone because it registers as one — native call UI on iOS and Android, and a full softphone in the browser with nothing to install.
Messages
Download
Pick your platform
iOS
iPhone and iPad · iOS 15+
- Native CallKit call screen
- VoIP push wakes the app instantly
- Shortcuts and Siri dialling
Android
Phone and tablet · Android 9+
- ConnectionService integration
- FCM high-priority call push
- Default-dialer capable
Web
Chrome, Edge, Firefox, Safari 16+
- Nothing to install
- Works on managed desktops
- Same threads as mobile
Sign in with your NextIP account. The app registers against the SIP endpoint you choose, so no manual server, port or codec configuration is needed.
Capabilities
A real phone, not a web widget
HD calling
OPUS wideband audio with automatic fallback to G.711 on constrained networks.
SMS & MMS
Threads sync across web and mobile. Send pictures and video on supported numbers.
Multi-line
Register several numbers and pick which one you present per call.
Encrypted
TLS signalling and SRTP media on every leg, including over cellular data.
Visual voicemail
Play, scrub and read transcriptions without dialling in.
Transfer & hold
Blind and attended transfer, hold with music, and mid-call DTMF.
Also supported
Prefer a desk phone or your own softphone?
NextIP is standards-based SIP, so anything that registers will work. Grab credentials from the portal under SIP endpoints.
Desk phones
Yealink, Polycom, Grandstream, Cisco, Snom, Fanvil
Third-party softphones
Bria, Zoiper, Linphone, MicroSIP
PBX platforms
FreePBX, Asterisk, FusionPBX, 3CX
ATAs
Obihai, Cisco SPA, Grandstream HT