hi,..wind ,cosmote and vodafone are the 3 major mobile companies,any shop with that sign will do..germanos shops also operate with cosmote..it's difficult to recommend one as they keep battling each other and having offers,so google their sites and see the best offer for what you need.
since your hotel is close to syntagma square and you will probably visit it for sightseeing (change of the guards etc) anyway,here are the 3 shops of these 3 companies i found in the area near syntagma square
have your passport ready,they need some info -obliged by law-Edited: 03 August 2014, 16:38
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