MobileExt Softphone

Core Functionality

📞 SIP VoIP Calling

Make and receive crystal-clear voice calls directly through your organization's cloud PBX system. Works over Wi-Fi and mobile data — no desk phone needed.

🔄 Always-On Call Readiness

Never miss a business call. MobileExt stays connected in three states:

App open — full real-time calling

App in background — persistent SIP service keeps registration alive

App closed/terminated — FCM silently wakes the app the moment a call arrives

🔔 Background Service & Notification

A lightweight foreground service runs quietly to maintain your SIP connection. A persistent notification confirms your line is active — standard behavior on Android for all professional calling apps.

📩 Business SMS

Send and receive SMS messages through your cloud extension, keeping all business communication in one place.

☁️ Cloud Extension System

Your mobile becomes your office extension. Calls route through your company's cloud PBX just like a desk phone — same number, same contacts, same call flows.