Groundwire VoIP SIP Softphone icon

Groundwire VoIP SIP Softphone v6.4.26 APK (Patched)

App Name Groundwire VoIP SIP Softphone
Publisher Acrobits, s.r.o.
Size 62MB
Latest Version v6.4.26
Get it On Google
MOD Info PAID/Patched
OS Android / 4.4 and up
Installs 10K+
Rating 3.3
View 207

Download (62MB)


Groundwire: VoIP SIP Softphone is a cutting-edge communication tool developed by Acrobits, s.r.o. This versatile app revolutionizes the way we make voice calls over the internet, offering a seamless and feature-rich experience for users. With its extensive range of functionalities and user-friendly interface, Groundwire redefines the standards of VoIP (Voice over Internet Protocol) softphones. Groundwire Mod APK is an impressive SIP softphone program designed for business users that need a more reliable and secure way to communicate with their clients and colleagues. The software provides top-notch protection for the private data of your company with features like HD audio and video and military-grade encryption. For businesses in need of a robust and feature-rich communication solution, Groundwire is the ideal choice since it is extremely flexible and works with all current mobile operating systems.

What is Groundwire: VoIP SIP Softphone?

Groundwire is a VoIP SIP softphone designed to facilitate voice calls over the internet using SIP (Session Initiation Protocol) technology. It serves as a powerful communication tool for individuals and businesses, enabling users to make high-quality voice calls over wifi or 3G networks. Groundwire offers a comprehensive suite of features, including multi-line support, call recording, audio conferencing, and more, making it a versatile solution for various communication needs. With our military-grade encrypted B2B SIP softphone software, you may send and receive messages, make audio and video conversations, and do much more. For corporate customers that want more from their SIP softphone, Groundwire is intended. Preconfigured to work with several of the most often used providers is Groundwire. Get Groundwire now to benefit from a more secure business-to-business (B2B) experience for all your business conversations. For individual users, Groundwire offers enterprise-caliber features, top-notch security, and excellent communication.


  1. Fixed Attended Transfer Failure: Groundwire addresses issues with falsely reporting attended transfer failures, ensuring seamless call transfer experiences for users.
  2. Incoming Call Screen Improvement: Users no longer miss incoming call screens on push calls, enhancing the overall call reception experience.
  3. Location Notifications Improvement: Groundwire improves location notifications, providing users with accurate location-based information during calls.
  4. Battery Life Optimization: Notifications for incoming calls are optimized to improve battery life, ensuring efficient power usage during voice calls.
  5. Multi-Line Support: Groundwire supports multiple SIP accounts simultaneously, allowing users to manage and switch between accounts effortlessly.
  6. Audio Conferencing: Users can initiate and participate in audio conferences directly from the app, facilitating collaborative communication.
  7. Post Box Integration: Groundwire features a post box for managing voicemail messages and notifications, enhancing message organization and accessibility.
  8. Call Transfer: Users can transfer calls seamlessly using Groundwire, improving call handling and management capabilities.
  9. Bluetooth Headset Support: Groundwire offers Bluetooth headset support, allowing users to connect and use their preferred Bluetooth devices for hands-free communication.
  10. Secure Calling: Groundwire ensures secure calling over SRTP (Secure Real-time Transport Protocol) with SDES (Secure Data Encryption Standard), safeguarding communication privacy and confidentiality.
  11. ZRTP Support: Groundwire supports ZRTP for secure SIP requests, providing users with an additional layer of security for their VoIP calls.
  12. Network Compatibility: Groundwire is compatible with both wifi and 3G networks, ensuring seamless connectivity and communication regardless of the network environment.
  13. Status Bar Notification: Users receive status bar notifications for incoming calls, enabling quick and convenient call management.
  14. Quick Account Import: Groundwire offers a quick and easy account import procedure from major VoIP providers, streamlining the setup process for new users.
  15. Call Recorder: Groundwire features a built-in call recorder and player integrated with call history, allowing users to record and playback their calls for reference and documentation.
  16. HD Audio Support: Groundwire supports HD audio through codecs such as 722 and Opus, delivering excellent sound quality for crystal-clear voice communication.
  17. Audio Codec Manipulation: Users can manipulate audio codecs to prioritize preferred codecs and disable unwanted ones, customizing their audio experience according to their preferences.
  18. User Interface: Groundwire boasts an easy and super smooth user interface, ensuring a seamless and intuitive user experience for all users.
  19. Graphical Configuration: Configuration settings are presented in a graphical interface, simplifying setup and customization for users.
  20. Android Contacts Integration: Groundwire integrates seamlessly with Android contacts, allowing users to access and manage contacts directly from the app.
  21. DTMF Tone Generation: Users can generate DTMF tones during calls to control various features of PBX (Private Branch Exchange) or automated systems, enhancing call control capabilities.
  22. Speaker Support: Groundwire supports speaker mode for hands-free communication, allowing users to switch between speaker and earpiece modes during calls.
  23. Detailed Call History: Groundwire keeps a detailed call history, providing users with a comprehensive record of their past calls for reference and analysis.
  24. Configurable RTP Port Range: Users can configure the RTP (Real-time Transport Protocol) port range, optimizing network settings for improved call quality and reliability.
  25. SIP Proxy and STUN Server Support: Groundwire offers support for SIP proxy and STUN (Session Traversal Utilities for NAT) server, ensuring compatibility and connectivity in various network environments.


  1. High-Quality Audio: Groundwire offers crystal-clear audio quality, supporting various audio formats including Opus, G.722, G.729, G.711, iLBC, and GSM, ensuring clear and uninterrupted communications.
  2. HD-Quality Video: Communicate in high-definition with up to 720p HD video quality supported by Groundwire. The app is compatible with both H.264 and VP8 video formats, enhancing visual communication experiences.
  3. SMS and Rich Messaging: Groundwire allows users to send SMS and rich messages quickly and easily through an intuitive user interface, facilitating efficient communication.
  4. Call Transfers and Conferencing: Keep essential operations running smoothly with Groundwire’s built-in call transfer and conferencing features, enabling seamless collaboration and communication among team members.
  5. Integrated Voicemail: Groundwire comes equipped with an integrated voicemail feature, ensuring that users never miss an important call and can easily access and manage voicemail messages.
  6. Military-Grade Encryption: Groundwire prioritizes security with military-grade encryption using SRTP, TLS, and ZRTP protocols, keeping company data safe and secure during communication.
  7. Battery Drain Reduction: Groundwire utilizes push notifications to keep users notified while minimizing battery drain, ensuring efficient power usage during prolonged usage.
  8. Seamless Call Transition: Whether using WiFi or a data plan, Groundwire offers seamless transition during critical handover stages, providing uninterrupted communication experiences.
  9. Customizable Experience: Groundwire offers high customization, allowing users to customize SIP settings, user interface, ringtones, and more, tailoring the app to suit individual preferences and needs.
  10. 5G-Friendly: Groundwire is optimized for 5G networks, enabling users to take advantage of the benefits of high-speed connectivity offered by 5G technology.
  11. Multi-Device Compatibility: Groundwire is compatible with any modern mobile operating system, ensuring flexibility and accessibility across various devices.
  12. No Hidden Fees: Users need not worry about hidden fees or subscriptions with Groundwire, as the one-time fee provides a lifetime license for the app, offering cost-effectiveness and transparency.
  13. Lifetime Support and Updates: Each Groundwire license includes lifetime support and unlimited updates, ensuring users receive ongoing assistance and access to the latest features and improvements.


  1. Large File Size: Groundwire has a relatively large file size of 62MB, which may occupy significant storage space on users’ devices, particularly those with limited storage capacity.
  2. Paid Add-On for Outgoing Calls Encryption: While Groundwire offers free encryption for incoming calls, encryption for outgoing calls using ZRTP is available as a paid add-on, potentially adding additional costs for users requiring outbound call encryption.
  3. Complex Customization: While Groundwire offers extensive customization options, some users may find the customization process complex or overwhelming, requiring additional time and effort to personalize the app to their liking.
  4. Learning Curve: Groundwire’s advanced features and functionalities may have a learning curve for users unfamiliar with VoIP technology or SIP softphones, potentially requiring some time to become accustomed to the app’s capabilities.

Frequently Asked Questions (FAQ) about Groundwire: VoIP SIP Softphone

1. How is the sound and video quality on Groundwire?

  • The audio and video calls on Groundwire are crystal clear, perfect for professional use. Groundwire supports audio codecs like Opus, G.722, G.729, G.711, iLBC, and GSM, with video resolutions reaching up to 720p HD. Whether you’re in a video conference or chatting with a coworker, Groundwire ensures high-quality audio and video.

2. Does Groundwire support text messaging?

  • Yes, Groundwire facilitates text messaging and rich media messaging between staff members in a streamlined manner. Businesses can communicate with customers and employees quickly and easily without installing additional applications or using paid services.

3. Can I transfer calls and hold conferences using Groundwire?

  • Absolutely! Groundwire includes features for call transfers and conferencing, making it ideal for organizations to stay connected with their most important clients. Whether you need to transfer a call to another employee or participate in a conference call, Groundwire makes it simple.

4. How does Groundwire ensure privacy and security?

  • Groundwire prioritizes privacy and security with professional-level encryption using SRTP, TLS, and ZRTP protocols (free for incoming calls and available as a premium add-on for outgoing calls). Additionally, users can modify SIP settings, user interface, and ringtones to tailor the app to their business’s needs.

5. Is Groundwire compatible with all devices?

  • Yes, Groundwire offers universal compatibility among devices, ensuring seamless communication regardless of the device or platform. Whether you’re using WiFi or a data plan, Groundwire ensures flawless call transfer and connectivity across all major mobile platforms.

6. Are there any hidden costs or subscription fees with Groundwire?

  • No, there are no hidden costs or required subscriptions with Groundwire. For a single payment, users receive limitless updates and technical support for the duration of their license. This ensures that your communication solution remains up-to-date and well-supported without costly annual fees.

Installation Guide for Groundwire: VoIP SIP Softphone

1. Downloading the App:

  • Visit the Google Play Store (for Android) or the Apple App Store (for iOS) on your mobile device.
  • In the search bar, type “Groundwire: VoIP SIP Softphone” and press enter.
  • Tap on the app icon to open its store page.

2. Installing the App:

  • On the store page, locate the “Install” button and tap on it.
  • Wait for the app to download and install on your device. This may take a few moments depending on your internet connection speed.

3. Accessing the App:

  • Once the installation is complete, tap on the “Open” button to launch Groundwire: VoIP SIP Softphone.
  • Alternatively, you can find the app icon on your device’s home screen or app drawer and tap on it to open.

4. Permissions:

  • Upon launching the app for the first time, you may be prompted to grant certain permissions, such as access to your device’s microphone and contacts. These permissions are necessary for the app to function properly.
  • Follow the on-screen instructions to grant the required permissions to Groundwire.

5. Setting Up Your Account:

  • After granting permissions, you’ll need to set up your SIP account within the app.
  • Enter your SIP credentials, including SIP server, username, and password, provided by your VoIP service provider.
  • If you don’t have a SIP account, you can sign up for one through your preferred VoIP service provider.

6. Configuring Settings:

  • Customize your Groundwire experience by configuring settings such as SIP settings, user interface preferences, and notification preferences.
  • You can also set up features like call forwarding, call recording, and voicemail within the app settings.

7. Making Calls:

  • Once your account is set up and configured, you’re ready to make calls using Groundwire.
  • Dial the desired number using the app’s keypad or select a contact from your device’s contacts list.
  • Tap the call button to initiate the call.

8. Receiving Calls:

  • When you receive an incoming call, you’ll see a notification on your device’s screen.
  • Tap the notification to answer the call or decline if desired.

9. Exploring Additional Features:

  • Groundwire offers a range of additional features, such as text messaging, call transfers, conferencing, and more.
  • Explore these features to enhance your communication experience with Groundwire.

10. Troubleshooting:

  • If you encounter any issues during installation or while using the app, refer to the app’s help section or contact customer support for assistance.


In conclusion, Groundwire: VoIP SIP Softphone stands out as a feature-rich and reliable communication solution for users seeking high-quality voice calls over the internet. Developed by Acrobits, s.r.o., Groundwire offers an extensive range of functionalities, including multi-line support, secure calling, call recording, and more, making it suitable for both individuals and businesses. With its user-friendly interface, seamless integration with Android contacts, and robust security features, Groundwire redefines the standards of VoIP softphones, providing users with an unparalleled communication experience. Whether you’re conducting business calls, participating in audio conferences, or simply staying in touch with friends and family, Groundwire is the go-to choice for efficient and secure VoIP communication.

  • Fixed falsely reporting attended transfer failure
  • Fixed missing incoming call screen on push calls
  • Improved location notifications
  • Improved delay on incoming calls

Download Groundwire VoIP SIP Softphone

Download (62MB)

You are now ready to download Groundwire VoIP SIP Softphone for free. Here are some notes:

  • Please read our MOD Info and installation instructions carefully for the game & app to work properly
  • To prevent users from installing apk files from outside, Google Play has now added a warning when installing apks & mods. PlayProtect will tell you the file is harmful. Simply, just click “Install anyway (unsafe)”.
  • Downloading via 3rd party software like IDM, ADM (Direct link) is currently blocked for abuse reasons.
  • Read the FAQ carefully for more details.

Recommended for You