O2 Prepaid Reviewed (2026): Cheapest Annual Pack in Germany

Which O2 prepaid plan is best for me?

1

BEST ANNUAL

O2 Prepaid Jahrespaket

150 GB at €89.99/year on O2. Cheapest national-network annual prepaid in Germany.

Data
150 GB/yr
Price
€89.99/yr
/month
≈€7.50
5G
Yes

Why we picked it: Pay once. Best for residents who want one Euro number for the year without thinking about 4-week cycles.

2

BEST FOR CITY USE

O2 Prepaid S

20 GB on O2. After the high-speed cap, surfing continues at 1 Mbit/s — you stay online for chat, maps, and email even after using all your data.

Data
20 GB
Post-cap
1 Mbit/s
Network
O2
5G
Yes

Why we picked it: The continue-surfing rule alone often makes O2 worth a couple of Euros more vs. supermarket brands that hard-cap.

3

BEST PAYG

O2 Freikarte

No monthly fee. 9 cents/min, 9 cents/SMS. Top-up 1 GB option at €3.99/4w, or 25 GB option at €5.99 for 24 hours.

Fee
None
Calls
9c/min
eSIM
Yes
Network
O2

Why we picked it: Right for backup SIMs and second numbers, especially with the 24-hour 25 GB top-up option for occasional heavy days.

4

BEST FOR HEAVY USE

O2 Prepaid Max

999 GB tier on O2 with premium continue-surfing after the cap. Effective unlimited for almost any user.

Data
999 GB
Post-cap
Premium
Network
O2
5G
Yes

Why we picked it: The de facto unlimited on O2 prepaid. Right for tethering laptops and heavy streamers.

What is O2's continue-surfing rule?

When you use up the high-speed data on O2 S and M tiers, the connection does not get shut off — it drops to 1 Mbit/s. That's slow but it's enough for WhatsApp, navigation, maps, email, low-bitrate audio. Supermarket brands like NORMA or KAUFLAND hard-cap to 32 or 64 kbit/s (effectively unusable) or stop you entirely. The Max tier extends this with premium continue-surfing after 999 GB.

Frequently asked questions

How does O2 prepaid compare on coverage?

O2 is excellent in Berlin, Hamburg, Munich, Frankfurt, and Cologne and ranked sehr gut by connect in 2025. Coverage drops faster than Telekom or Vodafone in rural and alpine areas. For city-only users, O2 is fine; if you regularly travel to small towns or ski resorts, prefer Telekom.

Is the O2 Jahrespaket the cheapest annual prepaid in Germany?

Yes. €89.99 for 150 GB/year works out to €7.50 per month. Telekom's Jahrestarif is €99.95 for 240 GB. congstar matches at €100 for 240 GB. O2 wins purely on absolute price; congstar/Telekom win on GB-per-Euro.

Does O2 prepaid include eSIM?

Yes. O2 has a dedicated O2 Prepaid eSIM page. Activation uses VideoIdent by default; PostIdent at a Deutsche Post branch is the alternative.

Can I activate O2 prepaid without going to a shop?

Yes. Order online, complete VideoIdent (live video call with an agent who checks your passport), scan the eSIM QR or wait for the physical card. The whole flow takes ~20 minutes if your timing aligns with an available VideoIdent agent.