When Video-Ident Rejects Your Foreign Passport in Frankfurt: How to Register a German SIM Card Anyway

The Official Rule

Every SIM card sold in Germany, prepaid or contract, has required identity verification since July 1, 2017. In principle, this is straightforward for anyone: German citizens present a valid ID card or passport, and non-German citizens present a passport, residence permit, or arrival certificate (Ankunftsnachweis). Three verification methods exist to check that document: video-ident over a webcam call, PostIdent at a post office, or in-person activation at a shop that scans your ID directly.

Where this breaks down in practice is that the automated versions of this check, video-ident and PostIdent’s document scanner, reject specific foreign documents for reasons that have nothing to do with whether the document is genuine. A documented pattern affects some EU nationals directly: newer Polish passports don’t carry a printed German address, since Polish authorities don’t add German address data and German registration offices aren’t permitted to write into a foreign document either, and UK national ID cards have the same gap. Video-ident systems check specifically for that address field, so the check fails before it ever gets to confirming who you are.

A second, separate failure pattern affects specific passports directly rather than an address field. Indian passports have been reported rejected by both video-ident and PostIdent at o2, with one community thread quoting Deutsche Post’s own explanation directly: “Die Software der Post lässt keine indischen Pässe zu, denn scheinbar gelten diese als nicht fälschungssicher” (Post’s software doesn’t accept Indian passports, since they’re apparently not considered sufficiently forgery-secure). This isn’t a rule published anywhere, it surfaces only when someone hits it and asks. Video-ident providers like WebID reportedly cover somewhere around 50 countries in total but have never published the list itself, so there’s genuinely no way to check your specific passport’s status before you try.

A third pattern is specific to the document type rather than the passport itself: paper-format residence permits often can’t be read by scanners at all. One documented case involved a customer whose paper Aufenthaltstitel and foreign national ID card were both rejected by a post office’s PostIdent reader in the same visit, “beides vom Leser nicht akzeptiert” (neither document accepted by the reader), as the postal employee put it. Switching to a passport instead resolved the verification within about three hours of requesting a new voucher.

Why This Lands on More People in Frankfurt Than Elsewhere

Two facts compound here that don’t both apply in most German cities. Frankfurt’s own statistics office reports that roughly 32 percent of the city’s registered population, people from 178 of the world’s 195 recognized nations, holds a foreign passport, one of the highest shares among major German cities. That’s simply a larger pool of residents who could run into one of these document-specific rejections than a city with a smaller international population would see. Separately, Fraport’s own 2025 traffic figures confirm Frankfurt Airport as Germany’s busiest, with roughly 63.2 million passengers passing through that year. A meaningful share of people relocating to Germany land here first, which means a meaningful share of newcomers are trying to solve this exact SIM registration problem within their first days in the country, sometimes literally at an airport kiosk, rather than having weeks to research it beforehand.

Photo by Silvie Lindemann on Pexels

When any of these automated checks reject you, the reliable fix is to stop retrying online and register in person instead. Buying a prepaid starter kit at a phone shop, a supermarket counter, or a kiosk means a staff member checks your physical passport or residence permit by eye rather than running it through a scanner or webcam system, which is exactly the step that failed online. In Frankfurt, Zeil (the city’s main shopping street) and the retail concentration in and around Hauptbahnhof both have multiple phone shops, electronics retailers, and supermarket counters that can activate a SIM on the spot. PostIdent’s own process explainer confirms in-store activation exists as a standard alternative alongside video-ident and PostIdent specifically because not every situation suits the automated paths.

Separately, don’t expect to sidestep any of this by keeping your old phone number. Mobile number portability (MNP, Rufnummernmitnahme) in Germany exists only for switching between German providers, it has no mechanism for porting in a number issued abroad. This is confirmed clearly for anyone who asks: a foreign number carries a different country code than a German one, and that structural difference, not a policy choice, is why porting in isn’t possible. Whichever verification path eventually works for you, it will come with a new German number.

What Real People Say

The pattern that comes up repeatedly in real accounts is discovering the rejection only after expecting the hard part to already be behind them, having a valid, genuine passport and still hitting a wall that has nothing to do with the document’s authenticity. Cases involving Polish and UK documents describe the frustration of an address field that simply doesn’t exist on their ID being treated as if it should.

The practical response that resolves things fastest, according to documented cases, is not retrying the same online method repeatedly but switching paths entirely: going to a physical retail location where a person, not software, checks the document. In the paper-Aufenthaltstitel case, switching from the residence permit to a passport, rather than retrying the same document, is what actually fixed it. For Frankfurt specifically, that pattern plays out at scale: with close to a third of the population holding a foreign passport and a large newcomer influx passing through one of Europe’s busiest airports, the “just go to a shop instead” fix is one that a genuinely large number of people in this city end up needing within days of arriving, not as a rare edge case.

Step by Step

1. Try video-ident or PostIdent first, most passports do go through without any issue, and this is the fastest path when it works.
2. If it’s rejected, don’t keep retrying the same method with the same document. Note whether the rejection message mentions an address, this points to the EU-document address gap rather than a passport problem.
3. Switch to in-person activation at a shop, supermarket, or kiosk as your reliable fallback, along Zeil or in and around Hauptbahnhof are the most concentrated options in central Frankfurt, this replaces the automated scanner with a staff member checking your document directly.
4. If you only tried a paper residence permit, bring a passport on your next attempt if you have one, paper documents without a machine-readable zone are a more consistent failure point than passports.
5. Don’t expect to keep your home country’s number. Plan on a new German number regardless of which verification path succeeds, MNP only covers switching between German providers.

Compliance Note

This page explains general, documented patterns in Germany’s SIM card identity verification requirements as of mid-2026. It is not legal advice. Provider-specific policies, accepted document lists, and verification software can change, confirm current requirements directly with your chosen provider if you hit a rejection this page doesn’t cover.