Here's something almost nobody explains clearly: a standard SMS fits 160 characters. But the moment your text contains certain special characters, that limit can quietly drop to just 70 — meaning a message that looked like it would send as 1 SMS can silently become 3 or 4.

Why this happens

SMS uses a specific, limited character set by default. The instant a message contains a character outside that set, the entire message switches to a different encoding with a much smaller size limit per segment — and every one of those segments is billed separately.

Why this matters especially for translated messages

Local-language text is more likely to include these special characters than plain English — meaning a translated message is exactly where this hidden cost trap shows up most often, and most invisibly.

How Yoola SMS handles this differently

Our AI Compose Assistant checks every suggested translation for this before you ever see it, and tells you plainly: "this needs 3 SMS instead of 1" — with a one-click option to shorten the message back down to fit a single SMS.

Try it yourself and see the real cost before you send, not after your credits are already gone.