eSIM in Germany: The Complete Guide to Data and ID

In Germany a SIM card comes with a legal identity check, and that single fact changes what is worth buying. Section 172 of the Telecommunications Act requires a provider to establish who you are before a prepaid line will carry a byte. The card in the blister pack is inert until the check clears, and the check needs a passport, a camera and somebody’s time.

The price structure has a trap at the small end. A gigabyte costs $0.50 at its cheapest, on a 50GB pack that sells for $25.00, and $7.00 on a single gigabyte. The 1GB band runs from $1.00 to $7.00 while 50GB tops out at $50.00, so the pack with the smallest price tag carries the highest rate.

There is no network decision to make either. All ten brands sell on Telekom, Vodafone and O2, all three in every plan, so an expensive plan is not buying a better signal.

That leaves three things worth settling before you pay: whether a German number justifies the check, how much data a week actually takes, and which size to buy so the small-plan rate is paid once instead of twice. The plan-by-plan figures sit on the Germany comparison page, ordered by what a gigabyte costs and by what a day costs.

How long does the German ID check take?

Half an hour at best. Section 172 puts the obligation on the provider, not on the buyer, which is why the rule surfaces at the worst possible moment. Name, address and date of birth have to be recorded and verified before the line is switched on, and the verification has to use an accepted document: a passport, a national identity card or a residence permit. The full text sits on the federal statute portal and the Federal Network Agency publishes which procedures count beyond handing the document to a person.

Three routes exist and none of them is quick. A video call in which the photo page is held to a camera, a check at a post office counter, or a counter in a carrier shop. All three want the document in hand, and the video route usually wants a German address, which a hotel booking does not always provide. The interface is in German. Thirty minutes is a good outcome, two hours is not unusual, and the line does not work until it is done.

A travel eSIM never enters that process. It is sold by a company outside Germany, activated abroad and used in Germany as a roaming profile, so there is no German subscriber to identify. Nothing is uploaded, nothing is photographed and no counter is involved. For a week of meetings or a Christmas-market weekend, that difference is the whole purchase.

Is a German number worth a store visit?

For a week of trains, museums and restaurants, no. Timetables, the DB app, museum slots, maps and the taxi apps all run on a data-only profile.

A number does solve the small set of German institutions that still telephone: the restaurant with no online booking, the hairdresser, the delivery driver who cannot find the door. Codes are the sharper case, because a bank or a ticketing service that sends six digits to a German number sends them somewhere a data-only profile has no answer.

Keeping the home line alive covers those codes, with the eSIM carrying data beside it. Getting an actual German number means walking the section 172 route above, which is why most visitors never consider it.

Why does a 1GB plan cost more than a 50GB one?

This runs against intuition and it is the one thing worth knowing before buying. In Germany the markup sits at the bottom of the shelf, not the top.

The 1GB band runs from $1.00 to $7.00, a spread of seven times. At 50GB the range is $25.00 to $50.00, less than double from bottom to top. The middle behaves like the middle: 3GB spans three times, 5GB 3.2 times, 10GB 3.3 times and 20GB 3.2 times.

Every price above is the cheapest that brand lists at that size with at least fifteen days on it, so a three-day plan does not undercut a two-week one.

The last column is the useful one. Doubling from 10GB to 20GB costs $1.50 at one end of the ladder and $20.50 at the other, and the dearer step is more than six of the ten sellers charge for the smaller plan. Two travellers with the same trip and the same allowance need not pay the same money.

The rule that follows is simple: buy one size larger than the estimate. Over-buying costs a few dollars, and under-buying costs a second purchase at the worst price on the shelf.

How much does a Germany eSIM cost?

Twenty gigabytes, which covers a two-week trip with navigation running, starts at $11.00. Five gigabytes starts at $4.00 and ten at $6.00, so the middle of the shelf is cheap in both directions. Flat-rate data for a month starts at $29.00, and a year of validity costs less than most people guess: 24GB spread over twelve months starts at $19.00, which works out at $0.0521 a day and is the lowest daily rate sold for Germany.

Ignore the $0.51 plan at the very bottom. It carries less than a gigabyte and exists to make a comparison table look cheap. The dearest data sold is $7.00 per gigabyte, so the gap between the best and the worst plan is 14.0 times.

Two structural warnings apply before comparing. 99 of the 202 plans are flat-rate, and flat-rate is not automatically better: a month of it starts at $29.00 against $11.00 for 20GB. One seller has no metered German plan at all, only flat-rate ones, so a per-gigabyte comparison does not exist for that part of the market. The comparison page sets both out plan by plan.

The window has to cover the whole trip rather than most of it. A seven-day product bought for ten days in Germany leaves three days leaning on hotel wifi, and the plan that rescues it on day eight costs more than the right one would have at the start. German windows run from a day to a year with very little between thirty days and twelve months, so there is no halfway option to fall back on.

None of that changes with the seller, because every brand lands on the same three networks. The decision is the plan, not the provider, and the cheapest plan for a given trip length can be read off the trip-length board.

Download it at home rather than at the airport. The profile arrives as a QR code or inside the provider’s app, and either route needs a live connection while it runs, so a hotel room the night before is a better place to discover a problem than an arrivals hall. A profile can sit on a phone for weeks without being switched on, which costs a minute and nothing from the window, since the clock starts at activation. Label it, and keep the email with the QR code, because a phone carrying three profiles all called eSIM is a phone whose owner cannot tell which one belongs to Germany at the Austrian border. A deleted profile usually has to be reissued by the provider, sometimes for a fee.

Running out is a pricing event rather than a technical one, and the shelf rewards planning over rescue. Most brands will sell a second plan onto the profile already on the phone, and a fresh plan is priced better per gigabyte than the top-up button, so the cheap fix is a new plan. Timing matters: a plan starts when it is bought, so buying on day three of a ten-day trip throws away three days of the new window. Profiles also compete for slots, and there are only a handful, so a 20GB plan bought before departure is the cheapest way to never need that second slot.

How much data does a week need with a rental car?

Four gigabytes is the figure for a city week of maps, timetables and photo uploads. Add a rented car with navigation running all day and the same week passes 10GB, because routing apps hold the screen and the radio awake for hours.

The German price ladder makes the answer easy to act on. 5GB starts at $4.00, 10GB at $6.00 and 20GB at $11.00, so the jump from ten to twenty gigabytes costs $5.00 at the cheapest brand. Nobody should be buying 5GB for a two-week trip to save two dollars.

Where the calculation goes wrong is at the bottom, in the way the small sizes are marked up. A traveller who estimates low and buys 1GB, then buys another, pays more than one who bought 10GB once. The trip-length board prices the cheapest plan at each length of stay for anyone whose trip does not fit the pattern.

Is a foreign card a problem?

Visa and Mastercard work at all ten brands, so the plastic itself is rarely the obstacle. The obstacle is the bank, because a first payment to an unfamiliar merchant abroad is the pattern its fraud filter is built to catch, and the filter tends to fire while the QR code is on the screen.

Three habits clear it. Warn the bank before the trip, or approve the charge in its app as it arrives. Use the wallet already on the phone where the brand accepts one, since Apple Pay and Google Pay clear more reliably than a typed number. And if one card is refused twice, switch cards rather than retrying, because repeated declines often lock that merchant for that card.

Brands list prices in US dollars, so a euro card is charged at the issuer’s rate on the day. The difference that adds is a rounding error next to choosing the wrong plan.

Can you get an invoice for a Germany eSIM?

Usually yes, and it is worth asking before the order rather than after, because a receipt and an invoice are different documents.

The confirmation email every seller sends is a receipt. An invoice carrying a company name, an address and a tax number is issued on request, sometimes from a field at checkout and sometimes through a message quoting the order number.

German VAT is 19 per cent and is already inside the displayed price, so the invoice splits the gross rather than adding to it. Reclaiming it against a foreign tax number follows the buyer’s own rules, which is outside what the seller can advise on.

The case that catches business travellers is timing. An invoice requested four weeks after the trip arrives after the expense claim has closed, and the request then becomes a second thread rather than part of the original order.

For a group, one invoice per order is the ordinary shape. A single invoice covering four separate orders is not, so placing one order for the team is easier than consolidating afterwards.

Nothing about the German network affects any of this. The invoice comes from the seller’s billing system, and the carrier whose network the profile uses never sees the transaction.

Where does the QR code come from after you buy?

The order asks for an email address and a card. No date of birth, no address, no German number, because the identity record described at the counter belongs to the local product and not to this one: the line is issued abroad and only visits German networks.

Read the confirmation before you close it. It carries the QR code, the validity window and, with a few brands, an access point name, which has to be typed into the phone by hand when the automatic settings do not land. Keep a copy of the code somewhere other than the inbox, because a profile removed from the handset cannot be pulled back and has to be reissued by the provider.

Then install it at home, on wifi, with a name that will still make sense in a list of two: Germany data rather than eSIM 2. The line stays switched off in settings until you need it, and a switched-off line cannot connect from the country you bought it in, which is the whole point of doing this early.

One German exception is worth knowing before the order. A handset bought on a contract from a German operator may be locked to that operator for the first two years, and a locked handset refuses a travel profile the same way it refuses a foreign SIM. The compatibility check covers the model side; the lock is a separate question and sits in the handset’s own settings.

Will your phone still make calls in Germany?

Only if it does 4G calling, because the older networks are being switched off. Germany shut its 3G networks in 2021, and all three operators have announced that 2G follows during 2028. Until then a handset can drop to 2G for a call; after that the only voice network left is 4G, and it makes one setting decisive: Voice over LTE, usually labelled VoLTE or 4G calling.

Without it, a phone can hold a data connection and still fail to make a call, because the voice would have to leave on 2G, and that network is on its way out. Most handsets sold since 2015 support it and most have it switched on by default, but it is worth checking in the settings before relying on the phone for a hotel call or a taxi.

The second check is eSIM support, and the list is shorter than people assume. Regional variants are the usual trap: the same model sold in mainland China takes no eSIM at all, and some dual-SIM versions trade the eSIM slot for a second physical one. Apple publishes the model list for its own range and the compatibility check covers the rest.

What do you do at Frankfurt before the train?

Test the profile here, because the first thing the trip needs is a ticket a phone cannot buy.

The S8 and S9 leave from the regional station under Terminal 1 and reach the Hauptbahnhof in about eleven minutes for €6.90. What catches visitors is that the RMV network has no tap-and-go gates anywhere: the fare comes from a machine or from the RMV app, and the app needs data. Inspectors work that line and the on-the-spot penalty is around €60, which is a bad way to start a holiday.

Switch the eSIM on before passport control rather than on the platform. Nothing needs configuring at the station: the phone picks a network up on its own, and the home SIM stays where it is for calls and codes. Onward, the ICE to Berlin runs about four hours and the route has long stretches where the signal drops between towns, so download the ticket and the offline map before boarding.

Does your home SIM already work in Germany?

For a visitor from the European Union or the wider European Economic Area the answer is yes: a SIM issued there roams in Germany at domestic prices, and that right runs until 30 June 2032. Buying anything at all is money spent for nothing.

Everyone else pays. A British, American or Australian line is outside that arrangement, so a week of German data is charged at whatever the home carrier sets, and a single day of it can cost more than a 20GB plan bought in advance.

The local alternative is the counter, and the counter means the identity check: a passport, a form, a queue, and a line that does not work until the check clears. What that leaves is a phone that works in the hotel and not on the street, which fails exactly where a phone is needed, at the ticket machine, the platform and the address on a booking.

The Germany comparison page orders all 202 plans by cost per gigabyte and by cost per day, and the price index puts Germany’s position on the cheapest rate into context against the other markets it covers.