Freetel offers simple User Interface and super audio quality VoIP calls in affordable rates. Freetel works on all iOS devices and supports calling over WIFI/EDGE/3G/LTE .In order to use these app, end users need login credentials such as Service Code, Username and password which will be provided by service providers.
Key features include:
1. Lowest battery usage with highest reliability / stability on App store.
2. Lowest latency.
3. Exceptional voice quality.
4. Bandwidth normalization.
5. Voice/Video packet negotiation
6. Bluetooth support.
7. Excellent audio quality, even on older devices.
8.Supports calling over WIFI/EDGE/3G/LTE.
9. SIP stack fully compliant to RFC.
10. Background / multitasking support.
11. Speakerphone, mute and hold.