← All guidesLiving

SIM cards and internet in Germany: cheap data, the prepaid trick, and why it is not India-cheap


Two early reality checks for every Indian arriving in Germany. One: mobile data is not India-cheap, forget ₹200 a month for endless 5G. Two: it is still very manageable if you buy smart, and if you mostly live on WiFi, you can spend almost nothing. Here is the honest guide to getting connected, on day one and at home.

The plan in one line: grab a cheap prepaid SIM the moment you land (no contract, no German bank account needed), then decide later whether you even need a contract. Most students never do.

Why it is pricier than India

India has some of the cheapest mobile data on earth. Germany does not. Expect to pay roughly €9 to €20 a month for a sensible data bundle, which feels steep coming from Jio or Airtel. The upside: networks are solid, EU roaming is included (your German SIM works across Europe at no extra cost), and discounters keep it affordable.

Prepaid first, always

Why prepaid wins for arrivals: no credit check (no SCHUFA), no German bank account required, no 24-month lock-in. You can buy one at a supermarket or kiosk on your first day. A postpaid contract usually needs a German bank account and sometimes a credit history you will not have yet, so it can wait.

Where the real deals are (the discounters)

The secret is that the cheapest SIMs run on the same networks as the big three (Telekom, Vodafone, O2), just under budget brands:

BrandNetworkTypical prepaid deal
Aldi TalkO2Around 10 GB for about €8.99 per 4 weeks. Sold in every Aldi. A student favourite.
Lidl ConnectVodafoneAround 10 GB for about €8.99 per 4 weeks, with EU and UK roaming.
congstarTelekom (best coverage)About €10 for 3 GB or €20 for 10 GB, on Germany's strongest network.
O2 prepaidO2O2 runs frequent promotions (extra data, discounts, multi-SIM deals). Worth checking O2's current offer before you buy.
Lebara, LycamobilevariousGood for cheap international calls to India.
About that O2 "50% off, 2 SIMs" type offer: yes, O2 and the discounters run promotions like this regularly, they come and go. Always compare the current promo against Aldi Talk and Lidl Connect's steady prices before committing, and check coverage for where you will actually live (the O2 network is great in cities, weaker in some rural areas and on trains; Telekom, via congstar, is strongest).

The "€10 every six months" move (for WiFi people)

If your university, flat and favourite cafés all have WiFi, you barely use mobile data. On a true pay-as-you-go prepaid SIM you only top up when you need to, so a light user can genuinely get by on a tiny amount every few months. Universities also offer free eduroam WiFi across campus. Many students keep a cheap SIM just for calls and two-factor codes and let WiFi do the rest.

One legal step: registration

You must verify your identity to activate a German SIM. By law, every SIM is registered to a person, so you will show your passport either in the shop or through a quick video or post identification (VideoIdent / PostIdent) when you activate online. Keep your passport handy. This is normal, not a scam.

Home internet (and why your WG matters)

  • If you live in a WG or dorm, internet is very often already included, ask before you arrange anything. This is the easiest path. See finding accommodation.
  • If you need your own line, home internet (DSL, cable or fibre) runs roughly €20 to €40 a month, usually on a 24-month contract, and needs a German bank account.
  • The catch nobody warns you about: installation can take days to several weeks. Do not assume you will have internet the day you move in. A prepaid SIM with a data bundle (or a small mobile hotspot) bridges the gap.

Quick setup order

1

Day one: buy a prepaid SIM

Aldi Talk, Lidl Connect or congstar from a supermarket or shop. Passport in hand.

2

Check what your flat includes

If your WG or dorm already has WiFi, you may need nothing more.

3

Only get a contract if you actually need one

Once your bank account is set up, switch to a contract SIM or home line if your data use justifies it. Many students stay prepaid the whole time.

FAQ

What is the cheapest SIM in Germany for students?

Discounters like Aldi Talk (O2 network) and Lidl Connect (Vodafone) offer around 10 GB for about €8.99 per 4 weeks. congstar gives Telekom's stronger network at higher but still fair prices.

Does O2 have prepaid discounts?

Yes, O2 and the discounters on its network run frequent promotions, including extra-data and multi-SIM deals. Compare the current O2 offer with Aldi Talk and Lidl Connect before buying.

Do I need a German bank account for a SIM?

Not for prepaid, you just top up. A postpaid contract usually does need a German bank account and sometimes a credit history, so prepaid is best when you first arrive.

Why is mobile data more expensive than in India?

India has some of the world's cheapest data. Germany is pricier, around €9 to €20 a month for a good bundle, but EU roaming is included and discounters keep it affordable. Heavy WiFi users can spend very little.

How long does home internet take to set up?

Often days to several weeks for installation, on a typical 24-month contract costing €20 to €40 a month. Many WGs and dorms already include internet, so check first.

Sorting out your first weeks? See the Anmeldung, bank and SIM guide, or ask a mentor for ₹500 →.

Want this mapped to your situation?

Book a verified mentor who's already living it.

Find a mentor →

Related guides