Data allowance used up: What helps now – and which trap can cost you money

19 April. Eleven days left until the end of the month, and the plan app shows: 97 percent used. You probably know this feeling – first Instagram stops loading pictures, then Spotify streaming cuts out, and Maps navigation builds the map in stamp-sized chunks. The data allowance is used up, and your smartphone turns into a phone with an attached slideshow.

Annoying. But no reason for panic purchases. That's exactly what providers are counting on.

What really happens during throttling

First the good news: in Germany, contract plans usually don't stop entirely once the data allowance is used up, they just stop being fast. Most plans throttle to 32 or 64 kbit/s, some more generous ones to a few hundred kbit/s. For comparison: a normal 5G plan delivers ten thousand times that.

At 64 kbit/s, you can still: send WhatsApp text messages, use email without attachments, send messenger voice messages with patience. What no longer works: videos, music streaming, video calls, modern websites – they've simply become too data-heavy for this speed. Calls and texts, by the way, keep working without restriction, as they bypass the data throttle.

Important to know: throttling doesn't cost you an extra cent. It's the fair way to handle the end of your data allowance. The unfair one comes now.

Automatic data top-ups: a trap with a warning label

A number of plans – especially in the discount segment – come with a so-called automatic data top-up activated by default. It sounds like a service, but here's how it actually works: once your data allowance is empty, the provider automatically adds a small data package. Typically two or three top-ups per month at €2 to €3 each, often for a laughable 100 to 300 MB per package. This happens without asking you, at best you get a text message.

Let's do the math: €3 for 300 MB comes to €10 per gigabyte. For comparison: at Lycamobile, 50 GB during the promotional period costs €6.50 a month – that puts the gigabyte at 13 cents. So the automatic top-up sells you data at around seventy-five times the price the same market normally charges. That's marketing, not maths.

The fix: the automatic top-up can almost always be deactivated, via the app, customer portal, or hotline. With some providers you'll have to search a bit – the feature likes to hide under "plan options" or "data allowance settings". Do it today. Seriously, it takes two minutes and might be the single most profitable phone setting there is.

Top up, buy a day pass, or just hold out?

Suppose the throttle has kicked in and you really need fast internet – what now? You have three options, and which one is right depends on how often this happens to you.

A one-off slip-up (holiday, marathon train journey, festival): then a deliberately booked day pass or a top-up package is perfectly fine. Expensive per gigabyte, yes. But bearable as an exception, and you stay in control because you press the button yourself.

Tight every other month: Here, topping up becomes a habitual tax. Anyone who regularly spends an extra €5 on data packages pays an additional €30 to €60 a year – for that you could easily get the next plan tier up. A look at the plan comparison shows quickly that jumping from 10 to 25 or 50 GB often costs only €1 to €3 more per month. The days when data allowance was expensive are over – only the top-up prices haven't caught up yet.

Chronically too small: If the bar turns red every month on the 15th, the plan is sized wrong. Then only switching helps. Since the TKG reform, you can leave your contract on a monthly basis once the minimum term ends – how this works in practice, including the cancellation button and number porting, is explained in our guide Cancelling a Mobile Contract: Deadlines and Number Porting. And thanks to eSIM, switching is now a matter of minutes instead of weeks – the guide we published in March.

Special case: prepaid – and the holiday effect

With prepaid plans, by the way, running out of data allowance often works differently than with contracts. Some SIMs throttle as described, others stop the data connection completely until you manually book a new option. That sounds harsh, but it's more honest than any automatic top-up: nothing happens without your active consent. Just check the plan details beforehand to see which model your provider uses.

Und noch ein Punkt, der jetzt im Frühling relevant wird, wenn die Osterferien- und Brückentagsreisen anstehen: Im EU-Ausland surfst du mit demselben Inklusivvolumen wie zu Hause – EU-Roaming ist gesetzlich inklusive. Das heißt aber auch: Die Woche in Italien zehrt vom selben Datentopf, und weil unterwegs das heimische WLAN fehlt, ist der Topf schneller leer als sonst. Wer mit fast aufgebrauchtem Volumen in den Urlaub startet, sitzt am dritten Tag in der Drossel. Vorsicht außerdem in der Schweiz: Die gehört nicht zum EU-Roaming, dort kann jedes Megabyte richtig Geld kosten. Mobile Daten aus, bevor der Zug durch Basel rollt.

Five immediate measures for the rest of the month

1. Turn down streaming quality. YouTube, Netflix and Spotify consume most of the data allowance. Switch to “Data saver” in the app settings – with music you'll barely notice the difference on the go.
2. Restrict automatic updates and cloud backups to Wi-Fi. A single system update can use several gigabytes. That belongs on your home network, not in your mobile plan.
3. Identify data-hungry apps. Both Android and iOS show you the usage per app. The culprit is often not the app you suspect – social media autoplay videos are notorious.
4. Prepare for offline use. Playlists, podcasts and maps for navigation can be downloaded via WiFi. Costs nothing except remembering to do it.
5. Use Wi-Fi consistently – but no sensitive logins on open café networks, just as a side note.

Bottom line

The throttling itself is harmless and free, but the automatic data top-up is a business model at your expense – turn it off. Topping up only makes sense as a rare exception; anyone who buys extra data often is subsidising the provider and should instead move up a plan tier. At today's prices, generous data allowances are cheaper than ever, and with a no-minimum-term plan you can even test how much you really need first. If you're unsure about switching: via our free callback we're happy to go through your usage together.