[mobile phone] Received peculiar short messages from unreachable number

[tho-schwarz () gmx de]

Hi list,
yesterday, at exactly 11pm, I received 4 short messages, which content I was not really able to read within the mobile 
phone itself (Motorola SLVR L7). The phone only displayed an empty line.
With Motorola Phone Tools 4.0 I was able to get the SMS from the mobile phone on the computer and did see the following:

°?öö¸&#926;'?rV¹?Ô7&#923;?·¨jw"é<á»\?Ö×Ç~2Km?6Í;ò?+aP'Dìð?¿Ýoߢ¥£¬?¢It¼?¼

ä ¨.íZÿ+Dû9X????E³ÛÙ¾©"ÞäF?ãBяeY?£j?I¢Ð?³LÌ?áÁ}x&#926;?.?¼
ÌÙ(©(ê?+ìMV¡ø?Ä

°?öö¸&#926;'£hÊSê&#934;?(¯`çî"qK`ø|à?ÈB.¨¸ñ|??È?Þ'fmQ2ÄWX(È>Î$?=?áÜû*?A-õU¡cãÃ3&Õꐯ&&#937;dG 
¥-_ܹq%4i??yϦl`?'á

ä ¨.íZÿÖ{Òö)ËaËû²J«­"ºGQ¶2&#923;S?7ë}Ûóª
õó4àá!L|?bt?P&#937;þ??8ÂÁ5Ætþ¯?¯÷?:¹~·?;/Èé©ðöÕ:ª(Ë

(If special characters got lost, you can review the content of the messages here:
http://pastebin.com/f47a797d3 )

I don't actually know what it does, but it seems like a command to me and not a regular message.
The sender was the number +49 177 0610100. This appears to be a german cell phone number (I live in Germany). Though 
you can call it, you get a "this number is not known to us". The network operator is the same as mine: E-Plus.

Hopefully someone knows something on either the phone number or the messages (or both).

If this message doesn't fit in here, please tell me so before deleting it.

Thanks in advance,
 Thomas Schwarz

------------------------------------------------------------------------
This list is sponsored by: InfoSec Institute

Need to pass the CISSP? InfoSec Institute's CISSP Boot Camp in both Instructor-Led and Online formats is the most 
concentrated exam prep available. Comprehensive course materials and an expert instructor means you pass the exam. Gain 
a laser like insight into what is covered on the exam, with zero fluff! 

http://www.infosecinstitute.com/courses/cissp_bootcamp_training.html
------------------------------------------------------------------------