T-Mobile Poland SIM Card: GO! Prepaid and eSIM Guide

A T-Mobile Poland SIM card is a prepaid starter on the GO! plans, and online you can choose an eSIM that arrives by email. The site is the clearest of the four Polish carriers on prices and registration, which helps a visitor plan. The catch is that registration is required, though T-Mobile's blog says a foreigner can do it without a PESEL number.

This is desk research from T-Mobile's public pages, read on 8 October 2026. We have not tested the service.

What can a visitor buy with a T-Mobile Poland SIM card?

T-Mobile's prepaid page lists GO! S at 30 zł (15 GB, plus 15 GB after a top-up), GO! M at 35 zł (30 GB, plus 20 GB), GO! L at 45 zł and GO! XL at 50 zł per 30 days. All include unlimited calls and SMS/MMS, and EU data allowances from 10.31 GB (GO! S) to 17.19 GB (GO! XL). The starter is 5 zł in store according to a promotion slide, and 20 zł online for the first 30 days of GO! XL. Check the page for current terms, since the free-first-month offer has conditions: top up at least 10 zł within 30 days.

Can you get a T-Mobile Poland eSIM?

Yes. Buying online, you can choose an eSIM, which is emailed to you. To change an existing SIM to eSIM you need a store or chat in the Mój T-Mobile app. Starters bought online arrive already registered.

How does T-Mobile Poland registration work for foreigners?

T-Mobile says registration is required, needing an ID document, your phone number and the SIM number (check it with *100#). The options are the Mój T-Mobile app, video verification, T-Mobile stores, Poczta Polska, kiosks, petrol stations, and Żabka or Auchan. A T-Mobile blog states a foreigner needs a valid passport or foreign ID card and no PESEL, and that unregistered cards are blocked 30 days after purchase. That blog is promotional, so verify the rule in store.

What does T-Mobile say about 5G and coverage?

5G is included with GO! plans if you have a 5G-capable device, T-Mobile 5G coverage, 5G enabled and a USIM. The page links to a coverage map but gives no percentages, so we cannot confirm that T-Mobile has the widest 5G.

How does it compare with a travel eSIM in Poland?

A T-Mobile Poland SIM card gives you a Polish number and a monthly plan, so it is more than you need for a week-long trip, where a travel eSIM with a listed data allowance is simpler. Our Poland SIM card comparison sets the options side by side, our where to buy a SIM card in Poland page covers shops, and cheapest eSIM covers data-only plans. We do not name the local network behind travel eSIMs unless the provider publishes it.

The other Polish carriers in this series are Orange Polska, Play and Plus. The Poland hub links the rest, including Warsaw Chopin Airport.

Common questions

Is a T-Mobile Poland SIM card good for tourists?

It suits a longer stay. GO! plans run from 30 to 50 zł per 30 days with unlimited calls and EU data allowances, and you can choose an eSIM online. For a few days, the monthly plan and registration are more than you need.

Does T-Mobile Poland have an eSIM?

Yes. When you buy a prepaid starter online you can choose eSIM, which T-Mobile sends to your email address. Starters bought online arrive already registered. Converting an existing physical SIM to eSIM needs a T-Mobile store or the chat in the Mój T-Mobile app.

Can a foreigner register a T-Mobile Poland SIM?

T-Mobile requires an ID document, the phone number and the SIM number. Its blog says a valid passport or foreign ID card works and no PESEL is needed. Options include the app, video verification, a store or a partner point. Confirm in store.

How much is a T-Mobile Poland prepaid plan?

On 8 October 2026 the prepaid page listed GO! S at 30 zł, GO! M at 35 zł, GO! L at 45 zł and GO! XL at 50 zł per 30 days. The starter was 5 zł in store per a promotion slide. Conditions apply, so check the page.

Does a T-Mobile Poland plan work in the EU?

T-Mobile lists EU data allowances within the GO! plans: 10.31 GB for GO! S, 12.03 GB for GO! M, 15.47 GB for GO! L and 17.19 GB for GO! XL. Unlimited calls and SMS are included in all plans. Check the details before travelling onward.

T-Mobile Poland SIM card: GO! prepaid plans, eSIM and registration