When an Android machine signifies a message was despatched as SMS by 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 an middleman server earlier than being delivered to the recipient. This course of includes using an web connection to transmit the message knowledge to a chosen server, which then forwards it as a normal SMS to the supposed cellphone quantity. A standard 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 presents a number of benefits. It may well allow message supply even when the sender’s machine has restricted or no mobile sign, so long as there’s an energetic web connection (Wi-Fi or cell knowledge). This technique also can scale back prices, notably when worldwide SMS charges are excessive, because the app supplier could have agreements that enable for cheaper SMS transmission. Moreover, it permits for options like message logging, analytics, and probably enhanced safety protocols, that are harder 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.
