I and my wife are Premiumsim customer for almost 3 years by now.We had no issue so far. it works well in our place, our city (Heidelberg) and almost everywhere in the vicinity. we also didn't face any problem in other EU countries. even in my apartment some time we face issue with our wifi (Vodafone DSL) and we have to switch to our mobile data provided by Premiumsim.So I highly recommend it
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