Does anybody know how to change/tweak the actual maximum size of a sms? I know that my network should be cabable of sending / receiving messages up to 750 characters... but the standard WM6 client only accepts 160 characters and would split additional chars into several sms.
Any ideas?
Network capapbilities have no bearing on SMS (Short Message Service), it is the SMS protocol itself that limits the message size.
"Transmission of short messages between the SMSC and the handset is done using the Mobile Application Part (MAP) of the SS7 protocol. Messages are sent with the MAP mo- and mt-ForwardSM operations, whose payload length is limited by the constraints of the signalling protocol to precisely 140 octets (140 octets = 140 * 8 bits = 1120 bits). Short messages can be encoded using a variety of alphabets: the default GSM 7-bit alphabet (shown below), the 8-bit data alphabet, and the 16-bit UTF-16/UCS-2 alphabet.[19] 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. Support of the GSM 7-bit alphabet is mandatory for GSM handsets and network elements,[19] but characters in languages such as Arabic, Chinese, Korean, Japanese or Slavic languages (e.g. Russian) must be encoded using the 16-bit UCS-2 character encoding (see Unicode). Routing data and other metadata is additional to the payload size."
