Hello, have a nice year first of all! Second, i would like to ask something, i am interested in mobile computing as the title indicates and i would like to know if anyone has to recommend a university in order to study this particular subject.I would prefer UK but any idea is welcomed.Please help a former student to decide! Thanks in advance!!

I have found these exact universities:

http://www.engineering.leeds.ac.uk/computing/postgraduate/masters-mobile-computing/index.shtml

http://www.kent.ac.uk/courses/postgraduate/257/mobile-application-design#!structure

http://www-en.fh-ooe.at/programmes/master/mobile-computing/

Any thoughts?? or is it worth it to have this speciality or a computer science master would be better?

The two UK ones are fine, Leeds is probably better though, and I don't know about the Austrian one. Depending on your career path it might make a difference if you choose a specific MSc, but in many cases courses are called different things but cover broadly the same material. It depends on the research specialities of the academics.