FACT · DE MVNO
About winSIM
Drillisch-owned German MVNO selling 1&1-network Allnet flat plans at sister-brand price points.
Key facts
Type
MVNO
Headquarters
Maintal, Germany
Founded
2014
Parent
1&1 / United Internet
Operator
Drillisch Online GmbH
Host network
1&1
Cheapest plan
10 GB - EUR 6/month
20 GB tariff
EUR 8.99/month
40 GB tariff
EUR 10.99/month
5G
Yes
Contract
24-month or Flex (monthly)
Official site
winsim.de
What is it?
winSIM is a German MVNO operated by Drillisch Online GmbH (1&1 / United Internet), running on the 1&1 4G and 5G network. The brand sells postpaid Allnet flat plans positioned at the value tier — cheaper than 1&1-branded plans on the same network.
winSIM is one of several Drillisch sub-brands. All share the same network access and tariff structure as sim.de, smartmobil.de, and PremiumSIM, with branding differences and minor pricing variations. winSIM's cheapest plan is 10 GB at EUR 6/month.