sms - SMS 消息的最大长度是多少？

Question

通过 Clickatell API 发送英语和西类牙语消息时，SMS 消息的最大长度是多少？
英语和西类牙语的消息长度有区别吗，因为西类牙语可能包含 Unicode 字符？

Answer 1

来自 SMS wikipedia page :

Messages are sent with the MAP MO- and MT-ForwardSM operations, whose payload length is limited by the constraints of the signaling protocol to precisely 140 octets (140 octets = 140 * 8 bits = 1120 bits).

Depending on which alphabet the subscriber has configured in the handset, this leads to the maximum individual short message sizes of 160 7-bit characters, 140 8-bit characters, or 70 16-bit characters.

至于你的另一个问题:

Is there is a difference between English and Spanish message lengths, since Spanish may contain Unicode characters?

不，没有区别，因为英语和西类牙语都完全包含在 8-bit Latin 1 character set 中。 .