Travel / Sim Cards for International calls Poland [17]

Hi, I use the Smartgroschen. They have a small top-up starts from 0.89 Euro, so just enough to use from time to time.

Life / Best / cheapest PAYG sim card for data and calls in Poland? [19]

Hi,
Smartgroschen is the best app to make cheap calls from Poland. They have a small top-up starts from 0.89 Euro, so just enough to use from time to time. I personally use Smartgroschen - great call quality, nice price and low top-up.