A1 vs Drei: which Austrian network is best in 2026?

A1 vs Drei: which Austrian network is best in 2026?

Coverage king vs network-experience winner · premium vs value

A1 and Drei split the trophies. A1 wins on raw coverage (about 98% of the population, the strongest rural and Alpine footprint) and on retail reach. Drei wins on real-world network experience: it took Opensignal's overall Best Network award with 68.0 Mbps median download, holds the lowest latency in Austria, and undercuts A1 on every price tier through its up sub-brand. Pick A1 for travel and the mountains, Drei for city value.

Source: A1 + Drei operator pages, RTR Telekom Monitor Q1 2025, Opensignal Austria Q1 2025, nPerf 2026 connection-quality barometer, verified May 2026

Which has the better network coverage?

RTR maps · Opensignal experience scores · Alpine + Burgenland edge

A1 wins coverage, especially outside cities. RTR's network coverage atlas shows A1 with the broadest 4G blanket across Tyrol, Vorarlberg, Salzburg and Carinthia — the Alpine and lakeside areas where the other two networks thin out. Drei's footprint is solid across the Eastern flatlands and major motorways, but coverage gets patchy in narrow valleys, on cable cars, and on side roads off the A2 / A10 motorways.

The Opensignal Q1 2025 Austria report scores coverage experience on a 10-point scale that combines signal availability and time on the best network. A1 took the Coverage Experience and Excellent Consistent Quality awards. Drei picked up the overall Best Network, Download Speed Experience, Upload Speed Experience and Games Experience awards — meaning where Drei has signal, it tends to be the faster experience. The gap is real but smaller than the marketing suggests: median Drei download (68.0 Mbps) is only about 3% ahead of A1 (65.9 Mbps).

Source: RTR Telekom Monitor, Opensignal Austria Mobile Network Experience Report Q1 2025, nPerf 2026 Austria barometer, verified May 2026

What does each provider charge?

Prepaid · postpaid · unlimited · family + home bundles

Drei's digital sub-brand up by Drei undercuts A1 SIMply at every tier except unlimited. up Pure at EUR 9.90 for 55 GB is the cheapest data-heavy plan from a Tier-1 Austrian MNO. A1 SIMply S costs EUR 14.90 for 120 GB — more expensive per month, but cheaper per gigabyte if you genuinely use 60+ GB. Both providers match at EUR 24.90/month for unlimited.

Source: A1.net + drei.at / up.at public tariff pages, verified May 2026. SIM activation fee EUR 19.90 (one-off, both operators). Prices include VAT.

Three pricing details matter more than the headline rate. First, annual indexation: A1 SIMply contracts include a CPI-linked rise; the up plans from Drei are advertised as fixed for the duration of the binding period (typically 12 months). Second, the EUR 19.90 SIM activation fee is identical on both providers and not waivable through the public site — it can occasionally be discounted in shop. Third, EU roaming on the cheapest tiers is fair-use-capped: A1 SIMply S caps EU data at roughly the domestic allowance, while up Pure applies the standard EU regulatory fair-use formula (around 30 GB for a EUR 9.90 plan).

Where does each work best?

Vienna · Alpine cabins · ski lifts · highway corridors · rural Burgenland

Pick by where you actually spend time. A1 is the safest network in rural and Alpine Austria — mountain huts, ski areas, side roads in Tyrol and Vorarlberg, lakeside villages in Carinthia. Drei shines in Vienna, Graz, Linz and Salzburg and along the motorway backbone (A1, A2, A4, A10) where its 5G footprint is densest and median speeds beat A1's.

Source: RTR coverage atlas, Opensignal Austria Q1 2025, operator product pages, verified May 2026

What are the pros and cons of A1?

Coverage king · biggest retail · premium pricing · CPI indexation

A1's strengths sit in the parts of the country other networks underserve: rural blanket coverage, Alpine reach, and the largest physical shop footprint in Austria for German- or English-language support. The trade-off is price. A1 SIMply tariffs are 30–50% more expensive than the up-by-Drei equivalents at every tier under unlimited, and contracts carry an annual CPI-linked rise.

What are the pros and cons of Drei?

Best Network award · cheapest digital plans · weaker mountains

Drei is the value pick with the best real-world performance awards. Its up sub-brand is consistently the cheapest Tier-1 MNO offer in Austria, and the network won Opensignal's overall Best Network title with the lowest latency and highest median download. The flip side: rural and Alpine coverage is noticeably thinner than A1's, and the retail / German-call-centre footprint is smaller.

Should you pick A1 or Drei?

Decision rule by user type · what to ignore · what to trust

The decision rule is simple. If you regularly travel outside the major cities — weekends in Tyrol, family in Carinthia, holidays in Vorarlberg — pick A1. If you mostly stay on the Vienna–Linz–Salzburg motorway corridor and care about price-per-GB, latency or a 5G fixed-wireless home connection, pick Drei through its up sub-brand. For everything in between, run the postal-code coverage check on both providers' official maps before signing.

How do you switch from A1 to Drei (or vice versa)?

Six steps · keep your number · two business days

Switching between A1 and Drei takes about 2 working days if you keep your number using the Rufnummernmitnahme (number porting) process. You need your U-Code (Übernahmecode) from the losing operator, a passport or EU national ID (required by RTR since 2019), and the new provider's checkout. Both providers waive the porting fee under the standard process.

1. Settle any binding period on the losing contract. Standard SIMly and up postpaid contracts have a 12-month binding. Calculate the early-termination penalty before initiating the port — or wait out the binding period. (rolling and prepaid tariffs can be ported any time)
2. Request your U-Code (Übernahmecode) from the losing operator. A1 customers get it via the A1 Service Hotline (0800 664 100) or the My A1 app. Drei customers request it from the Drei customer portal or by calling 0660 30 30 30. (valid for 60 days; do not cancel the old contract yet)
3. Sign up with the new operator and select “keep my number”. Enter the U-Code, your existing Austrian mobile number, and choose physical SIM or eSIM. Identity verification by passport or EU ID is mandatory under RTR rules.
4. Pay the EUR 19.90 SIM activation fee and the first month at checkout. The new SIM arrives in 1–2 working days, or the eSIM QR code appears instantly in the customer portal.
5. Wait for the port window. The new operator schedules the cutover — usually within 24 hours, but always on a working day. You will receive a confirmation SMS roughly 30 minutes before the switchover. (your old SIM stops working at the same moment)
6. Activate the new SIM and test. Insert the SIM (or scan the eSIM QR), reboot, then call a friend to confirm. The losing operator's final invoice arrives separately within 30 days.