Qacer
19 Apr 2018
Travel / Unlocked cell phone & SIM requirements for use in Poland / Europe [7]
Poland is in the EU like Czech Republic, Austria, and Hungary. Therefore, you can buy a Polish SIM card and be able to roam between these countries as well as other EU countries without roaming charges:
bbc.com/news/business-40281013
This means you can use a single SIM phone instead of a dual SIM one. If you want a Polish number and a Czech, Austrian, or Hungarian number as well, then you can use a dual SIM card.
You need to show your passport or national ID before you can purchase a Polish SIM card. So, I doubt you can just purchase a SIM card online without having to show proof of identity. You do have many options to buy a SIM card when you arrive in Poland, so waiting for long lines is likely an exaggeration.
Regarding your phone, check the supported cellular frequencies in Poland here:
worldtimezone.com/gsm.html
Then, find the technical specifications for your phone and see if your phone supports these frequencies. For GSM voice and text, if your US phone supports GSM, it will work in Poland. For 3G & 4G / LTE data, your US phone may not operate fully if it doesn't support all the Polish cellular provider frequencies. Also, your phone must be unlocked from a US service provider, so you can use it with Poland service providers. If your US service provider supports international roaming (like T-Mobile), then look into it as this may be a better short-term option rather than just buying a Poland SIM card.
Poland is in the EU like Czech Republic, Austria, and Hungary. Therefore, you can buy a Polish SIM card and be able to roam between these countries as well as other EU countries without roaming charges:
bbc.com/news/business-40281013
This means you can use a single SIM phone instead of a dual SIM one. If you want a Polish number and a Czech, Austrian, or Hungarian number as well, then you can use a dual SIM card.
You need to show your passport or national ID before you can purchase a Polish SIM card. So, I doubt you can just purchase a SIM card online without having to show proof of identity. You do have many options to buy a SIM card when you arrive in Poland, so waiting for long lines is likely an exaggeration.
Regarding your phone, check the supported cellular frequencies in Poland here:
worldtimezone.com/gsm.html
Then, find the technical specifications for your phone and see if your phone supports these frequencies. For GSM voice and text, if your US phone supports GSM, it will work in Poland. For 3G & 4G / LTE data, your US phone may not operate fully if it doesn't support all the Polish cellular provider frequencies. Also, your phone must be unlocked from a US service provider, so you can use it with Poland service providers. If your US service provider supports international roaming (like T-Mobile), then look into it as this may be a better short-term option rather than just buying a Poland SIM card.