Big SIM Deals & Promotions – October 2026
No store ratings yetBrowse current Big SIM coupon codes and deals, then confirm the terms before checkout.
Big SIM Coupon Codes and Deals
Browse current offers below and review each deal's terms, eligibility, and end date before checkout.
Free Number Porting with BIGSIM Mobile Plans
Keep your existing phone number when switching to BIGSIM without an additional porting charge, helping make the move to an eligible mobile plan simpler and less costly.
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Code facts
- Eligibility
- All Customers
- Restrictions
- Number-porting eligibility and transfer requirements apply
BIGSIM DSL Plans from €19.99 Per Month
Start a BIGSIM home internet plan from €19.99 per month, providing a current entry price for customers comparing DSL service alongside the provider’s mobile tariffs.
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Code facts
- Eligibility
- All Customers
- Restrictions
- DSL availability, speed and plan terms depend on address and selected service
€0 Setup Fee on Selected 24-Month BIGSIM Plans
Selected current BIGSIM 24-month mobile plans include a €0 setup fee instead of €19.99, reducing the upfront cost when activating an eligible promotional tariff.
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Code facts
- Eligibility
- All Customers
- Restrictions
- Selected promotional 24-month plans only
Unlimited on Demand 50 Plan for €22.99 Per Month
Get BIGSIM Unlimited on Demand 50 for €22.99 per month instead of €54.99, with additional 1 GB high-speed data packages available to activate repeatedly after the included allowance is used.
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Code facts
- Eligibility
- All Customers
- Restrictions
- Unlimited-on-demand plan terms and activation rules apply
90 GB 5G Allnet Flat for €19.99 Per Month
Choose BIGSIM’s 90 GB 5G allnet flat for €19.99 per month, combining a large data allowance with flat calls, SMS and EU roaming in the current limited-time offer.
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Code facts
- Eligibility
- All Customers
- Restrictions
- Current plan terms and selected contract duration apply
70 GB 5G Allnet Flat for €15.99 Per Month
Get 70 GB of 5G data with a BIGSIM allnet flat for €15.99 per month, including calls, SMS and EU roaming under the current limited-time tariff offer.
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Code facts
- Eligibility
- All Customers
- Restrictions
- Current plan terms and selected contract duration apply
Expired Big SIM Offers That May Still Work
These offers have passed their listed end date but may still be honored. Availability is not guaranteed, so confirm the discount before paying.
60 GB 5G Allnet Flat for €12.99 Per Month
Choose BIGSIM’s 60 GB 5G allnet plan for €12.99 per month, with flat calls and SMS, EU roaming and number portability included under the current promotional pricing.
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Code facts
- Eligibility
- All Customers
- Restrictions
- Current plan terms and selected contract duration apply
25 GB 5G Allnet Flat for €6.99 Per Month
Get a BIGSIM 25 GB 5G allnet plan for €6.99 per month, including flat calls and SMS, EU roaming and number portability for a low monthly mobile-service price.
Deal detailsView savings facts
Code facts
- Eligibility
- All Customers
- Restrictions
- Current plan terms and selected contract duration apply
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