Updated September 30, 2026 · TariffCue Editorial Team
Blau.de vs SMARTY
Blau.de vs SMARTY: the differences
| Compare |  Blau.de |  SMARTY |
|---|---|---|
| Host network | Telefonica (O2 network) | Three |
| Price from | €6.99 | £5 |
| Reference plan prices | Blau Allnet M: 8.99 EUR/month, 40 GB, 24 months Blau Allnet S Flex: 6.99 EUR/month, 15 GB, rolling (1 month notice) No unlimited plan listed; highest listed is Blau Allnet XL Promo: 14.99 EUR/month, 80 GB, 24 months | 40GB: GBP 10 per month, 40GB, 1-month rolling | Unlimited: GBP 20 per month, unlimited, 1-month rolling | 2GB Data Only: GBP 5 per month, 2GB, 1-month rolling |
| Markets | DE | GB |
| Unlimited plan price | Not confirmed | £20 |
| Wi-Fi calling | Not confirmed | Yes |
| Roaming countries | from 100 | Not confirmed |
| Hotspot sharing | Not confirmed | Yes |
| Mid-contract price rises | Not confirmed | No annual price rises on rolling one-month plans |
Same on both: Seller type (Mvno), SIM-only (Yes), 5G (Yes), eSIM (Yes), EU roaming (Fair use), Credit check required (No), Multi-line discount (Yes).
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Key differences
- Support channels: only Blau.de offers Phone, Chat, Email.
- Support channels: only SMARTY offers Community.
- Billing: only Blau.de offers Contract, Prepaid.
- Contract length: only Blau.de offers 24.
- Markets: only Blau.de offers DE.
- Markets: only SMARTY offers GB.
Our verdict on each
Blau.de
Blau suits anyone who wants a cheap German mobile line on a handset they already own, with sim only plans starting at €6.99 a month and no credit check. The trade-off is term length: only Blau Allnet S Flex rolls, and no plan in the range is unlimited.
SMARTY
SMARTY suits anyone after a rolling monthly SIM, a low entry price and the usual extras with no credit check, and it stays cheap at renewal because annual price rises do not apply to its rolling plans. Its unlimited plan ranks 89 of 173 on price, where heavy users get their value.
Score breakdown
| Area | Blau.de | SMARTY |
|---|---|---|
| Cost | 9.0Cost 9 leans on the rolling Blau Allnet S Flex at €6.99, with sim only across the range and no handset bundle. | 9.1HigherEntry plan from £5 a month, unlimited at £20, rolling billing with no annual rises. |
| Offer | 9.0Higher9 reflects esim and 5G, roaming across from 100 countries, a multi line discount, and no credit check required. | 8.9Sim only on Three with eSIM, wifi calling, hotspot sharing, a multi line discount and no credit check. |
| Trust | 8.98.9 rests on Telefónica Germany GmbH & Co. OHG trading since 2005, with support on phone, chat and help centre. | Not confirmed |
Licences and countries
| Country | Blau.de | SMARTY |
|---|---|---|
| Headquarters | Germany | United Kingdom |
Additional countries for Blau.de: 1. Additional countries for SMARTY: 1.
Sources behind this comparison
Blau.de
- blau.de: 18 facts, checked September 30, 2026
SMARTY
- smarty.co.uk: 20 facts, checked September 30, 2026
How they place
| Ranking | Blau.de | SMARTY |
|---|---|---|
| SIM-only deals | 165 of 416 | 184 of 416 |
| Cheap cell phone plans (MVNOs) | 77 of 137 | 85 of 137 |
| Phone plans with eSIM | 174 of 389 | 186 of 389 |
| Phone plans without a credit check | 9 of 26 | 11 of 26 |
Every fact side by side
| Fact | Blau.de | SMARTY |
|---|---|---|
| Billing | Contract, Rolling, PrepaidCovers more | Rolling |
| Contract length | 1, 24Covers more | 1 |
| Legal entity | Telefónica Germany GmbH & Co. OHG | Hutchison 3G UK Limited |
| Headquarters | Germany | United Kingdom |
| Founded | 2005 | Not confirmed |
| Support channels | Phone, Chat, Help centre, Email | Help centre, Community |
Where each stands against the rest
| Fact | Blau.de | SMARTY | Median |
|---|---|---|---|
| Unlimited plan price | Not confirmed | £20below the median | £22 |
| Roaming countries | from 100at the median | Not confirmed | 100 |
Median across 176 listed providers.
Pros and cons
Blau.de
Pros
- Entry is low for a contract mobile plan: Blau Allnet S Flex starts at €6.99 a month, under the €9.30 entry price across the site.
- No credit check is required, so a signup does not hinge on a credit file.
- An esim is available, so a compatible phone can be provisioned digitally on the host network.
Cons
- Use inside the EU is on fair use terms rather than a stated allowance, so a month of heavy use in Europe can cost extra.
- Blau serves DE, so the deal does not stretch to a second market.
- Terms run 1 and 24 months, and the roomier plans, Blau Allnet M and Blau Allnet XL Promo, sit at the long end, while only Blau Allnet S Flex rolls.
SMARTY
Pros
- The entry plan is priced from £5 a month and bills on rolling terms.
- No annual price rises on the rolling monthly plans, so what you start on is what you renew on.
- An eSIM, 5G, wifi calling and hotspot sharing are all included.
Cons
- Support runs on help centre and community only, with no phone line for problems that need a voice.
- EU roaming works on a fair use basis, so a month abroad is not the same as a month at home.
- Coverage is fixed to Three because SMARTY is a virtual network operator, so there is no second host network to weigh.
Who each suits
Blau.de
Who it suits
- Households that already own a handset and want an extra line, since every Blau plan is sim only and a multi line discount applies.
- Anyone who wants to sign up without a credit check, since none is required, and who can pick contract, rolling or prepaid billing from contract, rolling and prepaid.
- Light-to-moderate data users who travel now and then: roaming reaches from 100 countries, with EU use on fair use terms.
Who should look elsewhere
- Shoppers who want to buy straight from the host network: Blau is a seller of type mvno, while GETESA, Lonestar Cell MTN and yesss! each sell as a network.
- Anyone who needs unlimited data, since no Blau plan is unlimited; yesss! sets its own tariff as a network seller.
- Users outside DE, where the range is sold in a single market, so a network from their own home market such as GETESA or Lonestar Cell MTN is the fairer starting point.
SMARTY
Who it suits
- People in GB who want to leave any month on a 1 month rolling term.
- Heavy data users who will pay £20 a month for the unlimited plan instead of watching a cap.
- Households running several lines, since a multi line discount is available.
Who should look elsewhere
- Buyers who would rather buy from the network's own brand: GETESA, Lonestar Cell MTN and yesss! are all network sellers, while SMARTY is a virtual network operator on Three.
- Frequent travellers who want roaming included, since fair use is the basis here and 48.2% of cheap plan listings include it outright.
- Anyone who needs a human voice on day one, since support runs on help centre and community only.
Country by country
| Country | Blau.de | SMARTY |
|---|---|---|
| Germany | Yes | No |
| United Kingdom | No | Yes |
Questions about each
Blau.de
How much is the cheapest Blau plan?+
Blau Allnet S Flex is the entry plan at €6.99 a month, billed rolling with a month's notice rather than a fixed term. The next tier, Blau Allnet M, carries a longer commitment, and the largest listed, Blau Allnet XL Promo, sits at the long end of the term range. Among the brands ranked on entry price, Blau holds position 132 of 258.
Does Blau run a credit check?+
No credit check is required, which is why these tariffs sit alongside the no credit check plans in this group. Billing spans contract, rolling and prepaid, so the same walk-through applies whether a customer picks a fixed term or a prepaid option, and an esim is available to get the line running without a paper card.
SMARTY
How much is the cheapest SMARTY plan?+
SMARTY's entry plan starts at £5 a month and bills rolling, so there is no annual term to fund first. That figure is the monthly price from the start, not a headline rate that needs a discount code. Bigger allowances and unlimited data cost more.
How much is unlimited data at SMARTY?+
The unlimited plan costs £20 a month on rolling terms, and on the price lists it places 89 of 173 tracked brands, a stronger showing than its entry price. Heavy users get more here than the entry figure suggests.