Updated September 30, 2026 · TariffCue Editorial Team
BASE vs T-Mobile Polska
BASE vs T-Mobile Polska: the differences
| Compare |  BASE |  T-Mobile Polska |
|---|---|---|
| Price from | €15 | PLN 30 |
| Reference plan prices | BASE 15: 15 EUR/month, 15 GB, contract; BASE 20: 20 EUR/month, 50 GB, contract; BASE 39: 39 EUR/month, 300 GB, contract | GO! S: 30 PLN per month, 30 GB, 30 days; GO! M: 35 PLN per month, 50 GB, 30 days; Abonament komorkowy: 75 PLN per month, unlimited, 24 months |
| EU roaming | Included | Fair use |
| Markets | BE | PL |
| Unlimited plan price | Not confirmed | PLN 75 |
| Multi-line discount | Not confirmed | Yes |
Same on both: Seller type (Network), SIM-only (Yes), 5G (Yes), eSIM (Yes), Wi-Fi calling (Yes), Data rollover (Yes).
We earn a commission when you sign up through links on this site. Partner status can affect where a brand appears in our rankings.
Key differences
- T-Mobile Polska scores higher overall: 9.1 vs 8.8.
- Support channels: only T-Mobile Polska offers Chat, Phone.
- Markets: only BASE offers BE.
- Markets: only T-Mobile Polska offers PL.
Our verdict on each
BASE
BASE is a network operator selling its own contract and prepaid plans in Belgium, which suits anyone who wants mobile service straight from the company running the network. Entry pricing starts at €15 a month on the entry tier, with eSIM, 5G and wifi calling part of the package.
T-Mobile Polska
T-Mobile Polska suits people in Poland who want a network's own prepaid and contract plans on one account, with eSIM, Wi-Fi calling and data rollover included. Entry starts at PLN 30 and unlimited data sits at PLN 75, with 125 of 258 brands on entry price.
Score breakdown
| Area | BASE | T-Mobile Polska |
|---|---|---|
| Cost | 8.3Entry price sits at €15 a month on the entry tier, and the site ranks BASE at 219 of 258 on price from. | 9.2HigherEntry at PLN 30 ranks 125 of 258, while unlimited data at PLN 75 ranks 59 of 173. |
| Offer | 8.9Billing runs contract and prepaid, and 5G, eSIM, wifi calling and data rollover are all present on the plans. | 9.1HigherSim only, eSIM, 5G, Wi-Fi calling, data rollover and a multi line discount sit on a network seller type of network across PL. |
| Trust | 9.4BASE trades as Telenet Group NV, is headquartered in BE, was founded in 1999 and sells as a network. | Not confirmed |
Availability and regulation
| Country | BASE | T-Mobile Polska |
|---|---|---|
| Headquarters | Belgium | Poland |
Additional countries for BASE: 1. Additional countries for T-Mobile Polska: 1.
How they place
| Ranking | BASE | T-Mobile Polska |
|---|---|---|
| SIM-only deals | 25 of 416 | 14 of 416 |
| Mobile networks | 8 of 319 | 6 of 319 |
| Prepaid phone plans | 18 of 367 | 11 of 367 |
| Phone plans with eSIM | 36 of 389 | 26 of 389 |
Every fact side by side
| Fact | BASE | T-Mobile Polska |
|---|---|---|
| Billing | Contract, Prepaid | Contract, Prepaid |
| Contract length | Not confirmed | 24 |
| Legal entity | Telenet Group NV | T-Mobile Polska S.A. |
| Headquarters | Belgium | Poland |
| Founded | 1999 | Not confirmed |
| Support channels | Help centre | Chat, Phone, Help centreCovers more |
Pros and cons
BASE
Pros
- Entry pricing starts at €15 a month on the entry tier, with the tiers above it offering more data on the same contract terms.
- Unused data rolls into the following month, so a quiet month is not simply lost.
- EU roaming is included on the plans, which spares travellers a separate roaming deal.
Cons
- Support runs through help centre only, so anyone who wants a phone line or live chat has to look at another brand.
- BASE operates in Belgium alone, so the plans are of little use to anyone who needs a line in a second country.
- Reference plan prices cover contract tiers only, so anyone after a rolling monthly line has to weigh yesss!, which bills contract, rolling and prepaid.
T-Mobile Polska
Pros
- Two billing styles in one place: contract and prepaid covers both a prepaid card and a contract SIM, so a short month and a longer plan come from the same seller type of network.
- Unlimited data is priced at PLN 75 on the Abonament komorkowy plan, which also ranks 59 of 173 brands on that measure.
- Sim only is available, so you can bring your own handset and pay only for the network side.
Cons
- The contract plan runs 24 months, so the unlimited price is tied to a long commitment rather than a rolling monthly deal.
- EU roaming is on fair use terms, which is weaker than plans that include roaming in the monthly price.
- The range runs in Poland, so the plan, support and the prepaid card are aimed at Poland only.
Who each suits
BASE
Who it suits
- Readers in BE who want the network and the plan from one company, with billing under contract and prepaid.
- People who travel in the EU, since roaming is included on the plans.
- Data heavy users who want headroom and can step up the tiers on the same contract structure.
Who should look elsewhere
- Readers shopping purely on the opening figure, since Lonestar Cell MTN lists $0.20 against €15 at BASE.
- Anyone after a rolling monthly option, because BASE bills contract and prepaid only, while yesss! bills contract, rolling and prepaid.
T-Mobile Polska
Who it suits
- People living in Poland who want a plan sold by the network itself rather than a reseller, given network and PL.
- Shoppers who want both a prepaid card and a contract option on the same account, since contract and prepaid lists both.
- Households wanting a multi line discount, or travellers who want eSIM and Wi-Fi calling included.
Who should look elsewhere
- Anyone outside PL, where the prepaid card and contract plans do not reach.
- People who want EU roaming included in the monthly price, since fair use applies.
- Readers who need a short rolling commitment, because the contract option runs 24 months.
Current offers
BASE
Current offer
Discount code
30% off mobile plans for life: 30%
New BASE subscriptions EUR 15-39/month; loses discount if cancelled or downgraded.
Source, checked September 30, 2026
T-Mobile Polska
Current offer
First period offer
First month for 0 PLN with GO! M prepaid offer: 0 PLN for 30 days
Buy and activate starter, top up min. 10 PLN within 30 days, activate GO! M; renews at 35 PLN per 30 days
Source, checked September 30, 2026
Country by country
| Country | BASE | T-Mobile Polska |
|---|---|---|
| Belgium | Yes | No |
| Poland | No | Yes |
Questions about each
BASE
How much does BASE cost to start, and what do the reference plans include?+
The entry tier sets the starting price at €15 a month, and the tiers above it each carry progressively larger data bundles. These are recurring monthly contract prices rather than a limited introductory offer, so the figure that applies is the one attached to the tier you pick.
Can I get a BASE plan without a contract?+
Billing under contract and prepaid covers both contract and prepaid, so a contract is not the only way in. The published reference tiers are all sold on contract, which makes prepaid the option to ask about if you want a shorter commitment. SIM only service runs on the same network.
T-Mobile Polska
How much does a T-Mobile Polska plan cost at the cheapest end?+
Plans start at PLN 30 per month on the prepaid card. The reference tariffs add GO! S and GO! M, a smaller and a larger data bundle billed monthly on a short cycle, so entry pricing stays flexible rather than locked. Unlimited data sits higher, at PLN 75 on the Abonament komorkowy plan.
What does unlimited data cost, and how long am I tied in?+
The Abonament komorkowy plan carries unlimited data at PLN 75 per month and runs 24 months. That is the trade-off to weigh: a lower entry price on the prepaid card tariffs, or unlimited data on a long contract. On that measure the brand ranks 59 of 173.
Other options to compare
Other matchups
- T-Mobile Polska vs Astound
- T-Mobile Polska vs MobileX
- T-Mobile Polska vs yallo
- T-Mobile Polska vs Lycamobile
- T-Mobile Polska vs nju Mobile
- BASE vs Kyivstar
- BASE vs MasMovil
- T-Mobile Polska vs Budget Thuis Internet
- T-Mobile Polska vs ho. Mobile
- T-Mobile Polska vs US Mobile
- BASE vs 1pMobile
- BASE vs Play
- T-Mobile Polska vs Lyca Mobile Ireland
- T-Mobile Polska vs Orange Belgium
- T-Mobile Polska vs EE
- T-Mobile Polska vs Proximus
- BASE vs EE Store
- BASE vs beeline