Top Prepaid Mobile Sim: 100 free minutes, 100 free SMS, Internet flatrate for ~10€ per month

• Prepaid mobile sim card with 1 month notice period of cancellation
• No long term contract 
• Price per month: ~10€
• Included in price: 100 free minutes to German mobile & landline phones, 100 free SMS & Internet flatrate (speed reduces after 1 GB usage in a month)
• Network: O2
• If you exceed the free limit of the month, then call to any German mobile & landline phone costs 9 cent per minute & 9 cent per SMS
• Sponsored tariff. You will receive a maximum of 150 promotional messages/coupons (either via SMS, MMS or email) per month.
  

Here is the deal
Here is the complete tariff details

Link below updated
Note: If you want free prepaid Sim card with free internet surf option (only 100 mb per month with promotional messages/coupons) then check this deal here