The original specification happened to be limited to 160 characters because that was convenient with regard to the original GSM protocols and ...

Every SMS that exceeded 160 characters was sent as two separate texts. Although now they appear to be sent as one, every SMS that exceeds this limit counts as ...

To avoid the need for splitting cellular text messages into multiple parts, the creators of Twitter capped the length of a tweet at 140 ...

While 160 characters is the standard limit, the actual number depends on the character encoding used: GSM-7 or Unicode. This choice affects how ...

Limitation of 160 (7-byte) characters (140 bytes) was set so that the messages could fit into the existing signalling formats used at the time, ...

The 160-character limit is for messages encoded using the GSM-7 character set. Messages not encoded with GSM-7 are limited to 70 characters. For detail on how ...

The article also explains that Twitter's 140 character limit comes from SMS text messaging's 160 character limit. Twitter reserves 20 characters ...

Originally, it was designed to "fit in between" existing signalling protocols, which is why SMS length is limited to 160 seven-bit characters. It was ...

Your message includes a UCS-2 encoded character. This reduces the single message character limit from 160 to 70. If the message exceeds 70 characters, it ...

Its 160 character limit for the big 4 cellphone companies (Verizon, ATT, Sprint, T-Mobile) in USA. Every 160 characters gets split into a ...