Compare congstar mobile plans (October 2026)
congstar sells 14 mobile plans in Germany, from €5.36/month (congstar Prepaid Allnet XS mit LTE 25).
Operator facts
| Activation fee | eSIM | Network | Contract | EU roaming | Promo code | Source · checked |
|---|---|---|---|---|---|---|
| €9.99 | Yes | Telekom | prepaid, no subscription | 1 GBstated | unknown | congstar.de · |
All plans
- congstar Prepaid Allnet XS mit LTE 25 costs €5.36 a month, includes 1 GB data and Unlimited, prepaid, no subscription, EU allowance 1 GBstated. Order at congstar.de/prepaid/tarife/prepaid-allnet-xs Go to congstar. checked
- congstar Prepaid Allnet S mit 5G 25 costs €7.50 a month, includes 5 GB data and Unlimited, prepaid, no subscription, EU allowance 5 GBstated. Order at congstar.de/prepaid/tarife/prepaid-allnet-s Go to congstar. checked
- congstar Prepaid Jahrespaket costs €8.22 a month, includes 19.73 GB data and Unlimited, prepaid, no subscription, EU allowance 19.73 GBstated. Order at congstar.de/prepaid/tarife/prepaid-jahrespaket Go to congstar. checked
- congstar Prepaid Allnet M mit 5G 25 costs €10.71 a month, includes 25 GB data and Unlimited, prepaid, no subscription, EU allowance 25 GBstated. Order at congstar.de/prepaid/tarife/prepaid-allnet-m Go to congstar. checked
- congstar Prepaid Allnet L mit 5G 25 costs €12.86 a month, includes 40 GB data and Unlimited, prepaid, no subscription, EU allowance 40 GBstated. Order at congstar.de/prepaid/tarife/prepaid-allnet-l Go to congstar. checked
- congstar Allnet Flat XS (24 Monate) costs €15.00 a month, includes 15 GB data and Unlimited, 24-month contract, EU allowance 15 GBstated. Order at congstar.de/handytarife/allnet-flat-tarife/allnet-flat-xs Go to congstar. checked
- congstar Allnet Flat XS Flex (monatlich kündbar) costs €15.00 a month, includes 15 GB data and Unlimited, no contract, EU allowance 15 GBstated. Order at congstar.de/handytarife/allnet-flat-tarife/allnet-flat-xs Go to congstar. checked
- congstar Prepaid Allnet XL mit 5G 25 costs €17.14 a month, includes 50 GB data and Unlimited, prepaid, no subscription, EU allowance 50 GBstated. Order at congstar.de/prepaid/tarife/prepaid-allnet-xl Go to congstar. checked
- congstar Allnet Flat S (24 Monate) costs €20.00 a month, includes 50 GB data and Unlimited, 24-month contract, EU allowance 50 GBstated. Order at congstar.de/handytarife/allnet-flat-tarife/allnet-flat-s Go to congstar. checked
- congstar Allnet Flat S Flex (monatlich kündbar) costs €20.00 a month, includes 50 GB data and Unlimited, no contract, EU allowance 50 GBstated. Order at congstar.de/handytarife/allnet-flat-tarife/allnet-flat-s Go to congstar. checked
- congstar Allnet Flat M (24 Monate) costs €25.00 a month, includes 125 GB data and Unlimited, 24-month contract, EU allowance 125 GBstated. Order at congstar.de/handytarife/allnet-flat-tarife/allnet-flat-m Go to congstar. checked
- congstar Allnet Flat M Flex (monatlich kündbar) costs €25.00 a month, includes 125 GB data and Unlimited, no contract, EU allowance 125 GBstated. Order at congstar.de/handytarife/allnet-flat-tarife/allnet-flat-m Go to congstar. checked
- congstar Allnet Flat L (24 Monate) costs €30.00 a month, includes 200 GB data and Unlimited, 24-month contract, EU allowance 200 GBstated. Order at congstar.de/handytarife/allnet-flat-tarife/allnet-flat-l Go to congstar. checked
- congstar Allnet Flat L Flex (monatlich kündbar) costs €30.00 a month, includes 200 GB data and Unlimited, no contract, EU allowance 200 GBstated. Order at congstar.de/handytarife/allnet-flat-tarife/allnet-flat-l Go to congstar. checked
congstar eSIM
14 of the 14 congstar plans state eSIM. The cheapest with eSIM is congstar Prepaid Allnet XS mit LTE 25, at €5.36 a month.
congstar roaming
Elsewhere in the EU, congstar plans give 1 to 200 GB, as congstar states.
Who it's cheapest for
Not the cheapest for any of the 5 standard situations we compare.
- For Data only, no calls needed (1 GB+), congstar Prepaid Allnet XS mit LTE 25 costs €6.19/month; Lycamobile Global Connect XS is cheaper at €3.50/month, about €32.28/year less over a year (effective cost, fees and extra use included).
- For 5 GB+, congstar Prepaid Allnet S mit 5G 25 costs €8.33/month; Lycamobile Global Connect XS is cheaper at €3.50/month, about €57.96/year less over a year (effective cost, fees and extra use included).
- For 20 GB+, congstar Prepaid Allnet M mit 5G 25 costs €11.54/month; BIGSIM Allnet Flat 25 GB is cheaper at €6.99/month, about €54.60/year less over a year (effective cost, fees and extra use included).
- For 50 GB+, congstar Prepaid Allnet XL mit 5G 25 costs €17.97/month; Happy SIM Allnet Flat 75 GB is cheaper at €9.99/month, about €95.76/year less over a year (effective cost, fees and extra use included).
- For 100 GB+, congstar Allnet Flat M (24 Monate) costs €25.63/month; ALDI TALK Tarif S (Unlimited GB nachbuchen) is cheaper at €11.53/month, about €169.20/year less over a year (effective cost, fees and extra use included).
Price changes
- congstar Prepaid Jahrespaket: data changed ()
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