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 SMS size wrong 

The article states that SMS messages are ""at most 160 bytes""; however, this is inaccurate, as SMS messages have a maximum of 140 bytes. They can send 160 characters thanks to a 7-bit encoding (GSM 03.38), but the size in bytes is still 140.
However, I did not change the text because it links to a source (Techcrunch) where they do some calculation and mention 160 bytes.
How shall we fix this?"