ZoiPer Pro is a SIP-based softphone app available for Android and iOS devices. It enables users to make and receive VoIP calls over the internet using their smartphones or tablets. After setting up a SIP account, ZoiPer Pro connects to the VoIP service provider, allowing for high-quality voice and video calls without traditional phone lines.

ZoiPer Pro supports most VoIP providers as it utilizes widely used SIP and IAX protocols. Users should verify with their VoIP provider for compatibility before downloading. The app also supports various codecs, enhancing its flexibility under different network conditions and provider requirements.

ZoiPer Pro features high-definition audio and video calls, call encryption for security, integration with phone contacts, and support for multiple accounts. It also offers call forwarding, call recording, and an easy-to-use interface, making it suitable for both personal and professional use.

Yes, ZoiPer Pro supports encryption protocols such as TLS and SRTP to ensure secure communication. This protects calls and data from interception, making it a secure choice for users concerned with privacy, especially for business users handling sensitive information.

The device should run Android version 4.1 or higher, or iOS version 10.0 or later. A stable internet connection via Wi-Fi or mobile data is necessary for optimal operation. Devices should also have enough storage space and processing power to handle VoIP calls smoothly, ensuring a seamless communication experience.