Updated September 30, 2026 · TariffCue Editorial Team
Proximus vs T-Mobile Polska
What sets them apart
| Compare |  Proximus |  T-Mobile Polska |
|---|---|---|
| Price from | €14.99 | PLN 30 |
| Reference plan prices | Mobile Essential: 14.99 per month, 5GB, no commitment | Mobile Smart: 18.99 per month, 70GB, no commitment | Mobile Unlimited: 34.99 per month, unlimited, no commitment | 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 |
| Unlimited plan price | €34.99 | PLN 75 |
| EU roaming | Included | Fair use |
| Markets | BE | PL |
| Wi-Fi calling | Not confirmed | Yes |
| Roaming countries | 27 | Not confirmed |
| Data rollover | Not confirmed | Yes |
Same on both: Seller type (Network), SIM-only (Yes), 5G (Yes), eSIM (Yes), Multi-line discount (Yes).
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Key differences
- T-Mobile Polska scores higher overall: 9.1 vs 8.7.
- Support channels: only Proximus offers Email, Community.
- Billing: only Proximus offers Rolling.
- Billing: only T-Mobile Polska offers Contract.
- Contract length: only Proximus offers 1.
- Contract length: only T-Mobile Polska offers 24.
- Markets: only Proximus offers BE.
- Markets: only T-Mobile Polska offers PL.
Our verdict on each
Proximus
Proximus suits people who want a Belgian network run on no commitment terms, with included EU roaming and 5G on every plan. Entry at €14.99 is higher than the market median of €9.30, so the extras carry the case.
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 | Proximus | T-Mobile Polska |
|---|---|---|
| Cost | 8.4Entry price €14.99 sits above the market median of €9.30, and Mobile Unlimited at €34.99 tops €23.19. | 9.2HigherEntry at PLN 30 ranks 125 of 258, while unlimited data at PLN 75 ranks 59 of 173. |
| Offer | 9.1Included EU roaming, 27 countries roaming countries, 5G, eSIM and a multi line discount on a 1 month term. | 9.1Sim only, eSIM, 5G, Wi-Fi calling, data rollover and a multi line discount sit on a network seller type of network across PL. |
Positions in our rankings
| Ranking | Proximus | T-Mobile Polska |
|---|---|---|
| SIM-only deals | 29 of 416 | 14 of 416 |
| Mobile networks | 11 of 319 | 6 of 319 |
| Prepaid phone plans | 22 of 367 | 11 of 367 |
| Phone plans with eSIM | 39 of 389 | 26 of 389 |
Where each is licensed and available
| Country | Proximus | T-Mobile Polska |
|---|---|---|
| Headquarters | Belgium | Poland |
Additional countries for Proximus: 1. Additional countries for T-Mobile Polska: 1.
What we checked
Proximus
- proximus.be: 16 facts, checked September 30, 2026
T-Mobile Polska
- t-mobile.pl: 17 facts, checked September 30, 2026
Every fact side by side
| Fact | Proximus | T-Mobile Polska |
|---|---|---|
| Billing | Rolling, Prepaid | Contract, Prepaid |
| Contract length | 1 | 24 |
| Legal entity | Proximus public limited company under Belgian Public Law | T-Mobile Polska S.A. |
| Headquarters | Belgium | Poland |
| Support channels | Chat, Phone, Email, Help centre, CommunityCovers more | Chat, Phone, Help centre |
Where each stands against the rest
| Fact | Proximus | T-Mobile Polska | Median |
|---|---|---|---|
| Roaming countries | 27lowest quarter | Not confirmed | 100 |
Median across 176 listed providers.
Pros and cons
Proximus
Pros
- No commitment: plans run on 1 month terms, so nothing runs past a single billing cycle.
- EU roaming is included in the plan, with 27 countries covered.
- 5G and eSIM are both available, and a multi line discount applies to extra lines.
Cons
- Entry at €14.99 is above the €9.30 median, and rank 215 of 258 on price from.
- The unlimited option at €34.99 ranks 134 of 173, higher than the €23.19 median.
- Billing covers rolling and prepaid rather than a contract, which rules it out for anyone relying on an instalment-style contract term.
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
Proximus
Who it suits
- People living in Belgium who want a network operator rather than a reseller
- Households wanting several lines under one multi line discount
- Travellers within the EU who value included roaming on a 1 month term
Who should look elsewhere
- Anyone outside BE, where the plans do not run
- Buyers chasing the lowest entry price, since €14.99 beats the €9.30 median
- People who want a long fixed term rather than rolling and prepaid billing
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
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 | Proximus | T-Mobile Polska |
|---|---|---|
| Belgium | Yes | No |
| Poland | No | Yes |
Questions about each
Proximus
What does the cheapest Proximus plan cost?+
The entry plan starts at €14.99 a month. That is a rolling price with no introductory discount that later expires, and no contract to serve. Across the wider market the median starting price is €9.30, so this sits above the middle.
How much is the unlimited plan?+
The unlimited option costs €34.99 a month. The market median for unlimited plans is €23.19, with an upper quartile of €32.45. There is a middle tier priced between the entry plan and the unlimited option.
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.
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