With UCS2 encoding, the maximum of 70 characters is often reduced by the use of other features in the header. Is there a best practice for UCS2 character count planning which can be safely used in most circumstances allowing for header variance as may be needed; I have in view here particularly the impact of concatentation. Is best to plan on using only, say 67 characters? 65? What is a usually safe character count to advise message content creators?
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