Humming Express

Humming Express is a mobile app for Android and other smartphones, offering a range of functionalities like VoIP Calls & SMSs, cross-OS Instant Messaging and much more from data enabled mobile phones (3G/4G or WiFi).
For using this app,While Service Providers can use this White Label Platform to offer Mobile VoIP services in their own brand.

Features:
★VoIP Calls & SMSs via Wifi, 3G / 4G, edge or UMTS.
★Easy Sign Up using user name and password without op code