Discovery Hall › Mobile Development › Hybrid SIM and SIP Mobile Dialer Application

Hybrid SIM and SIP Mobile Dialer Application

SIP VoIP iOS Android CallKit

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Pain Points (Public)

Enterprises and remote teams often need to juggle carrier cellular calls and private VoIP trunks, but standard phone dialers cannot bridge both protocols, leading to fragmented call histories and unreliable incoming call routing across mobile platforms.

Suggested Approach (Public)

Build a unified iOS and Android dialer integrating a native SIP stack (such as PJSIP) with system telephony APIs, leveraging iOS CallKit and Android ConnectionService to handle background push wakeups, seamless audio routing, and unified switching between cellular and VoIP networks.

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Original Paid Gigs · 2 task(s)

"We are currently working on our mobile application, GCM Dialer, which handles both SIM and SIP calls. We have successfully implemented the conference…"

freelancer · INR1500 - INR12500 · Today Source ↗

"We are currently working on our mobile application, GCM Dialer, which handles both SIM and SIP calls"

freelancer · INR1500 - INR12500 · 1 week ago Source ↗

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