Message encoding is the method an SMS system uses to turn your written text into a format that mobile networks and devices can understand and deliver.
It decides how each character is represented in binary form so it can be transmitted over the network without getting corrupted.
In practice, message encoding determines which character sets are allowed, such as basic Latin letters, numbers, symbols, and sometimes emojis or characters from other languages.
It depends on the chosen encoding standard, like GSM-7 or Unicode, along with carrier rules and device capabilities.
These choices affect how many characters fit into a single SMS segment and whether special symbols display correctly.
Good message encoding helps avoid broken characters, unexpected question marks, and extra message segments that can increase cost or confuse recipients.
of texts are read immediately
of consumers want to text businesses
of consumers said they have tried to text a business
Message encoding works best when writers plan messages with the intended character set in mind from the start.
Teams should agree on which symbols, emojis, and language variants are acceptable so that templates remain consistent and less likely to trigger unexpected encoding changes.
In day-to-day use, it is helpful to test sample texts that mirror real conversations, such as multilingual updates or technical alerts, and confirm how they display on several common devices.
Message length should be checked against segment limits before launch, since one unusual character can shift the entire text into a different encoding and increase the number of parts sent.
Data feeding into templates also needs attention, because pasted content from documents or web pages may include hidden characters that look normal but behave differently when encoded.
Teams should document simple rules for writers, such as avoiding unsupported symbols and keeping emojis to a minimum, so operational staff can maintain message quality without guessing.
Regular reviews of live traffic, failed deliveries, and customer screenshots help keep encoding practices reliable, clear, and professional over time.
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