When an Android machine signifies a message was despatched as SMS by way of a server, it signifies that the textual content message didn’t originate straight from the machine’s SIM card utilizing the usual mobile community. As a substitute, the message was routed by way of an middleman server earlier than being delivered to the recipient. This course of entails using an web connection to transmit the message information to a chosen server, which then forwards it as a typical SMS to the meant cellphone quantity. A typical instance is the performance offered by sure messaging apps that supply SMS capabilities alongside their internet-based messaging options.
The utilization of a server to relay SMS messages affords a number of benefits. It could actually allow message supply even when the sender’s machine has restricted or no mobile sign, so long as there may be an energetic web connection (Wi-Fi or cellular information). This technique may scale back prices, notably when worldwide SMS charges are excessive, because the app supplier might have agreements that permit for cheaper SMS transmission. Moreover, it permits for options like message logging, analytics, and probably enhanced safety protocols, that are tougher to implement with conventional SMS. Traditionally, this technique has been essential in areas with unreliable mobile infrastructure or the place community suppliers cost extreme SMS charges.