Many thanks. It seems that Orange and T-Mobile have the best coverage especially around Kretowiny. Now I need to work out which is the best 'pakiet'... I want a data only SIM which allows 'data rollover'. This site has a comparison for the UK

https://simonlydeals.co.uk/data-rollove … est-deals/

Is there anything like this in Poland? In the UK some companies restrict 'tethering'. I don't know what this is called in Poland or whether there is any such restriction.

In Orange (in tariff 'Free) for start 25 zł = 30 GB, but you'll need to activate 'Rozmowy i SMSy do wszystkich bez limitu i pakiet internetu - cykliczna', IT will give u 15 GB and other 15 GB just for charging your account. And these packets if u charge in next month will cumulate, and every automatic activation od packet that's i said earlier gives u +1 GB. And sometimes just for charge u will get like 45 GB because of promotion.

Hope u understand anything.

In this tariff - no. "Z Bonusu nie można korzystać w ramach usługi roamingu"

Ok correct answer - depends tariff.

I don't understand the terms 'Cykliczna' and 'Jednorazowa'.

Play have a weak signal where I spend quite a bit of time - near Jezioro Narie.

I currently have a Vectra SIM with roaming, but I don't know how to tell how much data is available. I'll probably buy an Orange SIM when I'm in Poland next - but I only need it for data. Still not sure which tariff would be best for me.