Dear Ibrahim, I am affraid that I can not answer your question, that would also be the reason that I didn't reply to your first email. I would however try sending an email to Siemens, asking them if they could supply you with any free information on how to set up some sort of serial connection with their cellphones (eg. for reading sms messages). They might be of more help than anyone here, especially me! :-) You could even try tracking down some "phreaking" website; they're bound to have information on the subject. Anyway, if you do find any interesting information on the subject, if would be cool if you could post it here as well. It might possibly do someone else that is in the same position as you are in now some good. Good luck with your search for information. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist