價格：免費
檔案大小：17 MB
版本需求：系統需求：iOS 11.1 或以後版本。相容裝置：iPhone、iPad、iPod touch。
支援語言：英語
The Bluebell app offers simple User Interface and superb audio quality VoIP calls in affordable rates. Bluebell works on all iOS devices and supports calling over WIFI/EDGE/3G/LTE. In order to use this, app end-user can register with their mobile number.Key features include:
1. Lowest battery usage with highest reliability/stability on the app store
2. Lowest latency of all iOS softphones.
3. Exceptional voice quality.
4. Bandwidth normalization.
5. Voice/Video packet negotiation
6. Bluetooth support.
7. Excellent audio quality
8. Supports calling over WIFI/EDGE/3G/LTE.
9. Background/multitasking support.
10. Integration with the native iPhone contact list.
11. Speakerphone mute and hold.