VoIP Communication Between Non-SIM and SIM Enabled Android Phones: A Comprehensive Guide

For users looking to communicate between a non-SIM enabled Android device and a GSM-enabled Android phone with a SIM card, VoIP (Voice over Internet Protocol) solutions offer a reliable alternative. Specifically, DECT and local VoIP can be used to facilitate such communication. Below, we will explore popular VoIP applications that can handle these requirements, their features, setup processes, and alternative solutions like Google Voice.

Overview of VoIP for Non-SIM and SIM-Enabled Phones

VoIP technology allows you to make and receive calls over internet-connected devices, making it ideal for non-SIM phones. However, since non-SIM phones do not have a mobile number, they need to use local network connections, such as Wi-Fi, for voice communication.

Popular VoIP Apps for Local Network Calling

To achieve VoIP communication between a non-SIM enabled Android device and a GSM-enabled Android phone, several VoIP applications support local network calling. These apps include Linphone, Zoiper, and CSipSimple.

Linphone

Overview: Linphone is a popular open-source VoIP application that supports SIP (Session Initiation Protocol) for making voice and video calls. Features: Free to use with no ads. Supports audio and video calls. Can be configured to work over local networks. Setup: You need to set up a SIP account on your GSM phone and configure the non-SIM phone to use the same SIP account.

Zoiper

Overview: Zoiper is a versatile VoIP app that supports both SIP and IAX (Inter-Asterisk eXchange) protocols. Features: Easy to set up. Supports both audio and video calls. Works over Wi-Fi and local networks. Setup: Similar to Linphone, you need to create a SIP account and configure both devices accordingly.

CSipSimple

Overview: CSipSimple is a user-friendly SIP-based VoIP application that supports various codecs. Features: Customizable settings for advanced users. Supports push notifications for incoming calls. Setup: Requires SIP account configuration on both devices.

Alternative Solutions: Google Voice

While VoIP apps are the primary solution for VoIP communication on Android phones, Google Voice can also be utilized with certain limitations. If you already have a Google Voice account, you can use it to make and receive calls on both devices.

Google Voice with Limitations

Overview: With a Google Voice account, you can make and receive calls using your Google Voice number, but it may not fully function on a non-SIM phone without a mobile number associated with the account. Features: Allows you to make and receive calls using your Google Voice number. Works well if you have a Wi-Fi connection. Limitations: Google Voice may not function fully on a non-SIM phone. Requires a mobile number associated with the account.

Steps to Set Up VoIP Calling

Install VoIP App: Download and install the chosen VoIP app on both devices. Create a SIP Account: If using a SIP-based service, create a SIP account on a server you can use. Free services like Asterisk or paid services are available. Configure the App: Enter the SIP account details in the app settings on both phones. Connect to Wi-Fi: Ensure both devices are connected to the same Wi-Fi network for local calls. Make Calls: You should now be able to make and receive calls between the two devices.

Note that both devices must have a stable Wi-Fi connection for optimal call quality. Additionally, some VoIP services may require a small fee for certain features or better call quality.