I will develop latest linphone, voip, softphone, and calling apps with sip and esim

Looking for a top-tier developer to launch your custom Linphone-based VoIP softphone app with unmatched features? I've got you covered.

I specialize in creating white-label, secure, cross-platform VoIP apps (Android/iOS) with all the essentials: HD audio/video calls, group conferencing, instant messaging, push notifications, SIP trunk & eSIM support, auto-dialers, DID number integration, plus Twilio, FreePBX, and WebRTC APIs.

Feature List

• HD audio & video calls using top codecs (Opus, AV1, H.265, etc.)
• Group video conferencing with multiple display layouts
• Instant messaging with ephemeral messages, forwarding, reactions
• Secure E2E encryption (ZRTP, SRTP-DTLS, LIME, post-quantum)
• SIP trunking, DID number & eSIM integration
• Auto-dialer & multi-call management
• Push notifications & remote configuration
• LDAP/CardDAV address book sync
• White-label customization & cross-platform (iOS & Android)

Why you should choose me:

• Proven VoIP and Linphone expertise
• Strong security/encryption protocols
• Smooth cross-platform performance

Ready to launch your powerful, secure VoIP app? Contact me now to get started your custom Linphone project can be live within days!