Mobile SIM Contracts in Germany: Everything You Need to Know 2026

Mobile SIM contracts in Germany offer expats and residents a wide range of options — but choosing the right plan requires knowing exactly what to look for. Whether you are a newcomer, a student, or a long-term resident, understanding contract types, cancellation rules, and number portability can save you both money and stress in 2026.

Germany has one of Europe’s most competitive mobile markets, with dozens of providers fighting for your business. This guide covers everything from picking the right network to cancelling your contract the right way.

Types of Mobile SIM Contracts in Germany

There are two main types of mobile plans available to expats living in Germany. Each has distinct advantages depending on how long you plan to stay and how much data you need.

1. Postpaid (Laufzeitvertrag) Contracts

Postpaid contracts typically run for 24 months and are the most common choice for long-term residents. They often include lower monthly rates, higher data speeds, and the option to finance a subsidized smartphone alongside your plan.

The trade-off is strict cancellation rules — if you miss your cancellation window, your contract auto-renews for another year. We cover exactly how to avoid this below.

2. Prepaid SIM Cards

Prepaid SIMs require no long-term commitment and are perfect for tourists, new arrivals, or anyone who values flexibility. You simply top up your balance online or at any supermarket or kiosk.

Prepaid plans are also easier to set up without a German bank account or Schufa credit check, making them the go-to option for expats in their first few weeks in Germany.

3. Monthly Rolling Contracts (Monatliche Laufzeit)

A growing number of providers now offer 1-month rolling contracts — essentially postpaid plans without the 24-month lock-in. These plans give you the benefits of a full contract (better data speeds, stable pricing) with the freedom to cancel any time on 30 days’ notice.

To compare all three types side by side, use the Check24 Mobile comparison tool — one of the most comprehensive in Germany.

How to Choose the Best Mobile SIM Contract

With so many providers and plans available, it helps to know which factors actually matter when picking mobile SIM contracts in Germany.

Network Coverage

Germany’s three main networks are Telekom, Vodafone, and O2. Telekom consistently offers the best nationwide coverage, especially in rural areas. You can sign up directly via Telekom or through Vodafone for competitive unlimited data packages.

Many budget providers (MVNOs) like Klarmobil run on the same Telekom or Vodafone infrastructure at significantly lower prices. These are worth considering if cost is your priority.

Data Allowance

Think realistically about how much data you actually need. Plans in 2026 range from 5 GB budget options to fully unlimited 5G plans. Streaming video, working remotely, and video calling can easily consume 20–30 GB per month.

If you are unsure which plan suits you, Credit Card Comparison and Check24 both let you filter plans by data volume, network, and price in minutes.

International Calls and Roaming

If you regularly call family back home, check whether international minutes are included. Some plans offer free EU roaming but charge heavily for calls to non-EU countries. Use Verivox or Tarifcheck to filter specifically for plans with international calling included.

For sending money internationally — for example, to family abroad — consider using TapTap Send with promo code IQBAL12 and receive a €10–€15 bonus when you send €50 or more. Another popular option is PayPal for quick international transfers.

How to Cancel a Mobile SIM Contract in Germany

Cancelling mobile SIM contracts in Germany follows strict rules — missing a deadline can lock you in for another 12 months. Here is exactly what to do.

Step 1: Check Your Contract End Date

Log into your provider’s online portal and locate your contract details (“Vertragsdetails”). Note the exact end date and the required notice period — typically one month before renewal.

Step 2: Send a Written Cancellation (Kündigung)

Most providers accept cancellation by email, via their online portal, or by registered letter. Always request written confirmation. A sample cancellation letter in German:

Betreff: Kündigung meines Mobilfunkvertrags

Sehr geehrte Damen und Herren,

hiermit kündige ich meinen Mobilfunkvertrag mit der Rufnummer [IHRE NUMMER] fristgerecht zum nächstmöglichen Zeitpunkt. Bitte bestätigen Sie mir die Kündigung schriftlich.

Mit freundlichen Grüßen,
[IHR NAME]

Step 3: Confirm Cancellation

You should receive written confirmation within a few business days. If you do not hear back, follow up immediately with customer service — unconfirmed cancellations can be disputed later.

For 1-month rolling contracts, you can cancel at any time with 30 days’ notice, which makes the process much simpler.

How to Transfer Your Number (Rufnummermitnahme)

Switching providers does not mean losing your phone number. Germany makes number portability (Rufnummermitnahme) straightforward, and many providers offer a bonus of €10–€30 for porting your number to them.

Step 1: Request a Porting Code from Your Old Provider

Contact your current provider and ask for your number porting authorization code. Some providers charge a small administrative fee (usually €5–€10) for this service.

Step 2: Sign Up with the New Provider

When registering with your new provider, select the option to keep your existing number and provide your old number and provider details. The new provider handles the transfer process from that point.

Step 3: Wait for Activation

The transfer typically takes a few days to two weeks. Your new provider will notify you when the switch is complete. During this time, your old SIM remains active so you do not lose connectivity.

Check the latest porting bonus offers with Check24 Mobile before you switch — these deals change frequently and can significantly reduce your first-month costs.

Saving Money on Mobile Plans: Cashback and Discounts

Beyond comparing plans, savvy expats use cashback platforms to earn money back on their mobile contract purchases. Shoop Cashback and iGraal Cashback both partner with major German mobile providers and can return €10–€50 on new contracts.

These platforms are free to join and work automatically once installed as browser extensions — a simple way to reduce the real cost of your plan over time.

Mobile Plans and Your Wider Financial Setup in Germany

Choosing a mobile plan is just one piece of settling into life in Germany. If you are still setting up your finances, you will also want to explore your car insurance options. Check out HUK24 Car Insurance or use the Car Insurance Compare tool to find the best rate.

For a complete breakdown of vehicle ownership costs and rules, read our guide on Things You Must Know Before Buying a Car in Germany and the companion article Things You Must Know Before Buying a Car in Germany.

You should also set up utilities early. Our guide on Gas Contracts in Germany: How to Find the Best Deal walks you through the exact same comparison process for energy providers.

Final Tips for Getting the Best Mobile SIM Contracts in Germany

Always compare before you commit. Prices and promotions change constantly, and what was the best deal three months ago may no longer be competitive. Run a fresh comparison on Verivox or Tarifcheck every time your contract comes up for renewal.

Set a calendar reminder three months before your contract end date. This gives you enough time to research alternatives, negotiate with your current provider, or switch without pressure.

If you are new to Germany and still building your credit history, start with a prepaid plan or a 1-month rolling contract. Once your Schufa score is established, you can lock in better rates on a 24-month plan. Either way, mobile SIM contracts in Germany are competitive enough that with the right comparison tools, you will always find a plan that fits your budget and lifestyle.

Frequently Asked Questions