Core Functionality
π 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 β no desk phone needed.
π Always-On Call Readiness
Never miss a business call. MobileExt stays connected in three states:
App open β full real-time calling
App in background β persistent SIP service keeps registration alive
App closed/terminated β FCM silently wakes the app the moment a call arrives
π Background Service & Notification
A lightweight foreground service runs quietly to maintain your SIP connection. A persistent notification confirms your line is active β standard behavior on Android for all professional calling apps.
π© Business SMS
Send and receive SMS messages through your cloud extension, keeping all business communication in one place.
βοΈ Cloud Extension System
Your mobile becomes your office extension. Calls route through your company's cloud PBX just like a desk phone β same number, same contacts, same call flows.