Updated September 30, 2026 · TariffCue Editorial Team
Optimum vs PremiumSIM
Where Optimum and PremiumSIM differ
| Compare | Optimum ReviewSee alternativesSee alternatives |  PremiumSIM |
|---|---|---|
| Top download speed (Mbps) | 8,000Higher | 1,000 |
| Price from | $30 | €6.99 |
| Reference plan prices | 300 Mbps Internet: $30/mo, 300 Mbps, no contract; 500 Mbps Internet: $40/mo, 500 Mbps, no contract; 8 Gig Fiber Internet: $90/mo, 8000 Mbps, no contract | Allnet Flat 50+10 GB: 19.99 EUR per month, 60 GB, 24 months; No unlimited plan listed; Allnet Flat 2 GB: 6.99 EUR per month, 2 GB, 24 months |
| Setup fee | $150 | €49.99 |
| Router | Rent up to $14/mo unless you opt out | FRITZ!Box 7510, 7630 or 7690 from 4.99 EUR per month |
| Markets | US | DE |
| Upload speed (Mbps) | Not confirmed | 5.8 to 40 |
| Price after contract | Not confirmed | €44.99 |
| Mid-contract price rises | Price increases after promo period ends | Not confirmed |
| Exit fee terms | No contracts - cancel without early termination fees | Not confirmed |
| Address checker | Not confirmed | https://www.premiumsim.de/glasfaser |
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
- Optimum scores higher overall: 9.3 vs 9.0.
- Top download speed (Mbps) is higher at Optimum: 8,000 vs 1,000.
- Technology: only Optimum offers Cable.
- Technology: only PremiumSIM offers Fttc.
- Contract length: only PremiumSIM offers 24.
- Markets: only Optimum offers US.
- Markets: only PremiumSIM offers DE.
Our verdict on each
Optimum
Optimum suits US households that want a fast line with no contract attached, and its top plan reaches 8,000 Mbps. What you weigh is the joining cost: a setup fee of $150 and a router that is rented unless you opt out.
PremiumSIM
PremiumSIM suits people in Germany who want a low entry price on a sim only plan, a wide support choice and a fibre option from the same seller. Sim only tariffs start at €6.99, and the fixed line runs on fttc and fttp.
Score breakdown
| Area | Optimum | PremiumSIM |
|---|---|---|
| Cost | 8.6Entry price of $30 looks fair, but Price increases after promo period ends and a $150 setup fee weigh on the total. | 9.0HigherEntry price of €6.99 sits under the €9.30 site median, with a €49.99 fibre setup fee. |
| Offer | 9.8HigherSpeeds of 8,000 Mbps on terms of 1 month, with both cable and fibre available. | 9.0Sim only on 1 and 24 terms, with 5G, eSIM, wifi calling and EU roaming in 33 countries. |
| Trust | 9.8A US operator trading since 1996 under Optimum Communications, Inc., with US as its market. | Not confirmed |
Licences and countries
| Country | Optimum | PremiumSIM |
|---|---|---|
| Headquarters | United States | Germany |
Where they rank in our lists
| Ranking | Optimum | PremiumSIM |
|---|---|---|
| Broadband providers | 36 of 124 | 6 of 124 |
| Full fibre providers | 23 of 107 | 5 of 107 |
| Broadband without a long contract | 15 of 46 | 3 of 46 |
A third option
Singtel has top download speed (mbps) at 10,000, against 8,000 for Optimum and 1,000 for PremiumSIM.
Singtel reviewEvery fact side by side
| Fact | Optimum | PremiumSIM |
|---|---|---|
| Technology | Cable, Fttp | Fttc, Fttp |
| Contract length | 1 | 1, 24Covers more |
| Legal entity | Optimum Communications, Inc. | Drillisch Online GmbH |
| Headquarters | United States | Germany |
| Founded | 1996 | Not confirmed |
| Support channels | Not confirmed | Email, Chat, Phone, Help centre |
Where each stands against the rest
| Fact | Optimum | PremiumSIM | Median |
|---|---|---|---|
| Top download speed (Mbps) | 8,000highest quarter | 1,000at the median | 1,000 |
| Upload speed (Mbps) | Not confirmed | 5.8 to 40lowest quarter | 900 |
| Price after contract | Not confirmed | €44.99highest quarter | €36.50 |
Median across 116 listed providers.
Pros and cons
Optimum
Pros
- No contract: No contracts - cancel without early termination fees, so moving or switching does not cost an early termination charge.
- Top-end speed: 8,000 Mbps, well above Astound at 5,000 Mbps.
- Choice of line type: cable and fttp, so cable and fibre both come from one provider.
Cons
- Setup fee of $150 ranks 86 out of 86 on the site's setup fee table, the expensive end of that list.
- Rent up to $14/mo unless you opt out adds a monthly equipment cost unless you opt out and bring your own kit.
- Renewal risk: Price increases after promo period ends, so the figure you pay after the promo period can sit above the $30 entry price.
PremiumSIM
Pros
- Sim only plans start at €6.99, below the €9.30 median across listed brands
- Terms run 1 and 24, so a rolling option sits next to a longer commitment
- 5G, eSIM and wifi calling are all available, which is what most listed mobile plans carry
Cons
- The fibre line carries a setup fee of €49.99 and post contract pricing of €44.99
- As an mvno, the provider sets its own tariffs on another carrier's network and stays inside DE
- Uploads of 5.8 to 40 Mbps sit below downloads of 1,000 Mbps, which matters for sending large files
Who each suits
Optimum
Who it suits
- Households that want a very fast line but no long commitment, and would otherwise settle for Astound at 5,000 Mbps.
- People likely to move or switch provider often, since No contracts - cancel without early termination fees keeps leaving cheap.
- US households that want one provider for both cable and fibre lines: cable and fttp.
Who should look elsewhere
- Buyers outside US, who can compare EarthLink instead for fttp, 5G and satellite and a wider choice of ways to connect.
- Fibre-only buyers, who may prefer Abissnet running fttp across its footprint.
- Shoppers who want no joining bill, since the $150 setup fee ranks 86 out of 86 and Astound's terms are worth checking first.
PremiumSIM
Who it suits
- People in Germany who want a sim only plan on 1 and 24 terms
- Households that want mobile and a fibre line from one seller, with €49.99 to budget for at the start
- Travellers who need EU roaming included in 33 countries
Who should look elsewhere
- Anyone after unlimited data, since no unlimited plan appears among the reference plan prices
- Buyers who want the host network itself, where yesss! sells as a network
- People who need service beyond DE, with Lonestar Cell MTN listed as a network
Country by country
| Country | Optimum | PremiumSIM |
|---|---|---|
| United States | Yes | No |
Questions about each
Optimum
What does Optimum cost to get started?+
The entry price is $30 a month, the cheapest plan on the list. Installation is a separate setup fee of $150. Budget for both in the first month, because the setup cost does not appear in the monthly price and it sits at the expensive end of the site's setup fee table.
Do I have to sign a contract with Optimum?+
Contract terms apply: No contracts - cancel without early termination fees. Plan terms are listed as 1 month, so the commitment is measured in months rather than years. That makes Optimum a straightforward option if you expect to move home, since leaving does not trigger an early termination charge.
PremiumSIM
What does the cheapest PremiumSIM mobile plan cost?+
The starting price across the range is €6.99, set on a small allnet plan. A second reference plan adds a much larger data allowance at a higher monthly cost, and no unlimited plan appears among the reference plan prices. Heavy data users would pay for the larger tier from the first bill.
How long is the contract?+
Plan contract months run 1 and 24, so a short rolling arrangement sits alongside a longer commitment. Billing is offered as contract or rolling, which lets you match the term to how long you expect to keep the line. Households that expect to move soon should read the longer term carefully.
Other options to compare
Other matchups
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- Optimum vs OiSTER
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