The ability to send and receive text messages over a wireless network on an Android device facilitates communication without relying on cellular service. This process leverages Voice over Internet Protocol (VoIP) or similar technologies to transmit textual data via a Wi-Fi connection. Various applications enable this functionality, allowing message exchange even in areas with limited or absent cellular coverage. An example includes using a messaging app with Wi-Fi calling enabled to send an SMS to a standard phone number, or communicating with another user of the same application directly over the internet.
This capability offers several significant advantages. It reduces reliance on cellular data plans, potentially lowering communication costs. For individuals in areas with poor cellular reception but strong Wi-Fi, it ensures consistent connectivity. Historically, this functionality emerged as a solution to address coverage gaps and evolving communication preferences, providing alternatives to traditional cellular-based text messaging.