Updated September 30, 2026 · TariffCue Editorial Team
MobileX vs sim.de
What sets them apart
| Compare | MobileX ReviewVisitVisit |  sim.de |
|---|---|---|
| Price from | $3.88 | €6.99 |
| Reference plan prices | Build Your Own from $3.88 per month, custom data, month-to-month; Basic Unlimited 10GB: $14.88 per month, unlimited talk text plus 10GB, month-to-month; Basic Unlimited 30GB: $24.88 per month, unlimited talk text plus 30GB, month-to-month | 25 GB: 6.99 EUR/month, 25 GB, 1 month; 50 GB: 9.99 EUR/month, 50 GB, 24 months; Unlimited on demand: 19.99 EUR/month, unlimited, 24 months |
| Unlimited plan price | $14.88 | €19.99 |
| EU roaming | Paid | Included |
| Markets | US | DE |
| Host network | Not confirmed | 1&1 |
| Wi-Fi calling | Yes | Not confirmed |
| Roaming countries | Not confirmed | 33 |
| Data rollover | Yes | Not confirmed |
| Hotspot sharing | Yes | Not confirmed |
Same on both: Seller type (Mvno), SIM-only (Yes), 5G (Yes), eSIM (Yes).
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Key differences
- MobileX scores higher overall: 9.4 vs 8.9.
- Billing: only MobileX offers Prepaid.
- Billing: only sim.de offers Contract.
- Contract length: only sim.de offers 24.
- Markets: only MobileX offers US.
- Markets: only sim.de offers DE.
Our verdict on each
MobileX
MobileX suits US readers who want a prepaid plan with a low entry price and no contract attached, scoring 9.4 overall. Build Your Own starts at $3.88 on 1 month, and that same monthly rate carries into every later period, so nothing has to be unwound at renewal.
sim.de
sim.de suits people in Germany who want a cheap sim only line with a monthly option and a fixed contract choice on the same tariff sheet. It runs on the 1&1 network, and its entry price of €6.99 sits well under the market median for entry pricing.
Score breakdown
| Area | MobileX | sim.de |
|---|---|---|
| Cost | 9.5HigherPlans start at $3.88 and the unlimited tier starts at $14.88, so both entry points sit low. | 9.1Entry at €6.99 and unlimited at €19.99 both sit under the site medians of €9.30 and €23.19. |
| Offer | 9.2HigherEverything runs month to month on 1 month, with eSIM, 5G, wifi calling, hotspot sharing and data rollover included. | 9.0Sim only, 5G and Esim are available, with included roaming across 33 countries and terms of 1 and 24. |
| Trust | Not confirmed | 8.4Run by Drillisch Online GmbH since 2014, an mvno on the 1&1 network with support on email, chat and phone. |
Where each is licensed and available
| Country | MobileX | sim.de |
|---|---|---|
| Headquarters | Not confirmed | Germany |
Where they rank in our lists
| Ranking | MobileX | sim.de |
|---|---|---|
| SIM-only deals | 2 of 416 | 24 of 416 |
| Cheap cell phone plans (MVNOs) | 1 of 137 | 14 of 137 |
| Phone plans with eSIM | 16 of 389 | 35 of 389 |
Where these facts come from
MobileX
- mymobilex.com: 16 facts, checked September 30, 2026
sim.de
- sim.de: 17 facts, checked September 30, 2026
Every fact side by side
| Fact | MobileX | sim.de |
|---|---|---|
| Billing | Prepaid, Rolling | Contract, Rolling |
| Contract length | 1 | 1, 24Covers more |
| Legal entity | Mobile X Global, Inc. | Drillisch Online GmbH |
| Headquarters | Not confirmed | Germany |
| Founded | Not confirmed | 2014 |
| Support channels | Email, Chat, Phone, Help centre | Email, Chat, Phone, Help centre |
Broadband
| Fact | MobileX | sim.de |
|---|---|---|
| Technology | Not confirmed | Fttc, Fttp |
| Top download speed (Mbps) | Not confirmed | 1,000 |
| Upload speed (Mbps) | Not confirmed | 5.8 to 40 |
| Setup fee | Not confirmed | €49.99 |
| Router | Not confirmed | FRITZ!Box 7510, 7630 or 7690, from 4.99 EUR per month, optional |
| Address checker | Not confirmed | https://www.sim.de/glasfaser |
Where each stands against the rest
| Fact | MobileX | sim.de | Median |
|---|---|---|---|
| Roaming countries | Not confirmed | 33lowest quarter | 100 |
Median across 176 listed providers.
Pros and cons
MobileX
Pros
- Build Your Own starts at $3.88 on a plan where the data allowance is set by the customer
- Plans run 1 month, so there is no long term to serve
- Unlimited talk and text plans start at $14.88
Cons
- European roaming is paid, so travel adds cost rather than arriving with the plan
- The seller type is mvno, so service runs over a host network and local coverage needs checking
- Coverage is listed for US, so anyone who needs service across several countries should look wider
sim.de
Pros
- Entry pricing of €6.99 is below the site median of €9.30
- The Unlimited on demand plan costs €19.99, under the site median unlimited price of €23.19
- Contract terms run 1 and 24, so a plan can sit on a monthly term or a longer one
Cons
- The Unlimited on demand plan is tied to the longer of 1 and 24, so unlimited data is not offered on a monthly term
- Service runs in DE only, so the tariffs are not offered outside that market
- As an mvno, sim.de sells on the 1&1 network rather than owning it, unlike the network operators getesa, yesss! and Lonestar Cell MTN
Who each suits
MobileX
Who it suits
- Residents of US who want a prepaid plan with no long contract
- People who want unlimited talk and text from $14.88
- Readers who want an eSIM, rollover data and hotspot sharing on a flexible plan
Who should look elsewhere
- GETESA readers who would rather buy from a network than a mvno
- Lonestar Cell MTN readers who want the network itself rather than a virtual brand
- Travellers who need roaming inside the monthly plan, since European roaming is paid
sim.de
Who it suits
- People in DE who want a data heavy sim only line without paying for a handset
- Travellers from DE who want roaming included and reach across 33 countries
- Households that want one provider offering both a short monthly term and a longer fixed contract
Who should look elsewhere
- Buyers outside DE, since the service is a single market
- People who want a handset bundled with the tariff, as the plans are sim only
- Buyers who want unlimited data on a rolling monthly basis, since the Unlimited on demand plan sits on the longer of 1 and 24
Current offers
MobileX
Current offer
Bonus
Unlimited 30 50GB data promo: 50GB data
Offer applicable to Unlimited 30 Standard Access single month plan only. Any unused data does not rollover.
Source, checked September 30, 2026
Country by country
| Country | MobileX | sim.de |
|---|---|---|
| United States | Yes | No |
Questions about each
MobileX
What is the cheapest MobileX plan?+
Build Your Own starts at $3.88 and you set the data allowance on it yourself. The published reference prices for the plans are monthly and month to month, so that entry figure is the ongoing figure rather than a promotional rate that changes later. A reader comparing a low headline price with a long contract deal is comparing two different structures here, not two stages of one sale.
Does MobileX use contracts or lock-ins?+
No long term is attached. Billing is prepaid and rolling and plans sit at 1 month, the short contract length that flexible mobile deals tend to use. Nothing ties you in for a year, so a reader who wants to change plan or walk away can do so without serving out a term first.
sim.de
How much does a sim.de sim only plan cost to start with?+
The cheapest way in is the entry data plan at €6.99 per month, and it can run on a monthly term rather than a long contract. The larger data plan and the Unlimited on demand plan sit on the longer of 1 and 24 instead.
How much is unlimited data on sim.de?+
The Unlimited on demand plan costs €19.99 per month, and it is tied to the longer of the contract options, 1 and 24. That price sits under the site median unlimited price of €23.19, but the commitment is the part to weigh.
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