Ucalltel lets you make calls to national or international destinations. Save on your mobile phone costs right away by using this application! Ucalltel offers free 3G or WiFi calls for iPhone . Simply install Ucalltel, register with Ucalltel account make calls to your friends and family abroad.
Features :
* SIP protocol support
* Making Call
* Call timer
* Hold
* Speaker
* Phone Book (Synchronize with Phone Address Book)
* Call History
* Proxy Setting
* Silence Suppression
* Echo Cancellation
* Registration Timeout
* STUN Server
*Codecs supported: G729, G722, G711,GSM
System Requirements:
Supported : iOS 7.0 or later.This Application is optimized for iPhone 5.
Internet Connectivity: Wi-Fi,3G.