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Klucz Mobile — offer and packages

Important

From 16 November 2026 the 3G network is being gradually switched off. Have an old SIM card? Replace it with a new one to keep using 4G internet.

Important

3G switch-off — check your phone and SIM card

What is changing

3G technology is being replaced by newer ones: 4G/LTE and 5G. From 16 November 2026 the 3G network is being switched off step by step, one part of the country after another. Your number stays the same, and the 2G network keeps working all over Poland.

Does this affect you?

  • Your phone and SIM card support 4G/LTE — you do not need to do anything.
  • You have an old SIM card without LTE or a phone that works only in 2G/3G — where 3G is gone, you will have no mobile internet. Calls and texts will still work over 2G.
  • A modem or router that works only in 3G needs to be replaced with a 4G/LTE model.

How to check

In your phone settings choose the 4G/LTE (or 5G) network mode and automatic network selection, then restart the phone. If your phone supports 4G but you still see only “2G” or “E”, you may have an old SIM card.

You can also send a free text message SPRAWDZAM to 80909 — the reply will tell you about your phone and SIM card.

How to replace your SIM card

Call our Customer Service: 727 899 999 (Mon–Fri 9:00–18:00), write to bok@klucz.net or message us:

WhatsAppViberTelegramMessenger

We will check your card — if it needs replacing, we will send you a new one free of charge by Polish Post (Poczta Polska). Your phone number stays the same.

Receive gifts!

Transfer your numberto Klucz Mobile

Details

Get PLN 10 credited to your account + three mos of free services with Klucz Mobile!

  1. 1. Transfer your number to Klucz Mobile.
  2. 2. Activate the Giga Mega Klucz package..
  3. 3. Send an SMS with the text #3m to 727880088 within 14 days of activation.

Promotion terms and conditions

transfer your number

free delivery!

Buy our starteron Allegro

Details

Buy a SIM card on Allegro

Order our starter on Allegro. Click the link and choose your package! Golden numbers also available!

buy

SIMPLE OFFER

The key to simple communication.

  • Klucz Max

    55PLN
    / mo

    300 GB

    • unlimited calls and SMS in Poland
    • calls to Ukraine at
      PLN 0,09/min
    • 1000 min po 0,25 zł do UE
    • 1000 min at PLN 0.25 to India
    • 1000 min at PLN 0.25 to the USA and Canada
    • 1000 min at PLN 0.20 to Moldova
    activate with code *136*11*05#
    Details

    Renews automatically every 30 days

    Check package status: *136#

    Deactivate package: *136*00*05#

    After using up your data, speed will be limited to 32 Kb/s

  • HIT!

    Giga Mega Klucz

    35PLN
    / mo

    100 GB

    • unlimited calls and SMS in Poland
    • calls to Ukraine at
      PLN 0,12/min
    • 1000 min po 0,25 zł do UE
    • 1000 min at PLN 0.25 to India
    • 1000 min at PLN 0.25 to the USA and Canada
    • 1000 min at PLN 0.20 to Moldova
    activate with code *136*11*04#
    Details

    Renews automatically every 30 days

    Check package status: *136#

    Deactivate package: *136*00*04#

    After using up your data, speed will be limited to 32 Kb/s

  • Klucz No Limit +

    30PLN
    / mo

    60 GB

    • unlimited calls and SMS in Poland
    • calls to Ukraine at
      PLN 0.09/min
    • 1000 min at PLN 0.25 to the EU
    • 1000 min at PLN 0.25 to India
    • 1000 min at PLN 0.25 to the USA and Canada
    • 1000 min at PLN 0.20 to Moldova
    activate with code *136*11*07#
    Details

    Renews automatically every 30 days

    Check package status: *136#

    Deactivate package: *136*00*07#

    After using up your data, speed will be limited to 32 Kb/s

  • Klucz No Limit

    22PLN
    / mo

    10 GB

    • unlimited calls and SMS in Poland
    • calls to Ukraine at
      PLN 0,19/min
    • 1000 min po 0,25 zł do UE
    • 1000 min at PLN 0.25 to India
    • 1000 min at PLN 0.25 to the USA and Canada
    • 1000 min at PLN 0.20 to Moldova
    activate with code *136*11*20#
    Details

    Renews automatically every 30 days

    Check package status: *136#

    Deactivate package: *136*00*20#

    After using up your data, speed will be limited to 32 Kb/s

  • Klucz Mini

    15PLN
    / mo

    5 GB

    • unlimited calls in Poland
    • calls to Ukraine at
      PLN 0,09/min
    • SMS in Poland at PLN 0.29
    • +50 GB at up to 1 Mb/s*
    activate with code *136*11*03#
    Details

    Renews automatically every 30 days

    Check package status: *136#

    Deactivate package: *136*00*03#

    *Internet in the Klucz Mini package:
    0-5 GB – LTE/5G
    5-50 GB – up to 1 Mb/s
    above 50 GB – up to 32 Kb/s

  • Klucz Premium

    PLN 50
    / 30 days

    100 GB (daytime)
    +200 GB (nighttime)

    activate with code *136*11*12#
    Details

    Renews automatically every 30 days

    Check package status: *136#

    Deactivate package: *136*00*12#

    ▪️ The package consists of two parts: 100 GB by day and 200 GB by night.
    ▪️ To use the night 200 GB, connect after 1:00 AM.
    ▪️ If the SIM is in a router, schedule an automatic reboot at 1:05 AM.

  • Internet package

    PLN 30
    / 30 days

    100 GB

    activate with code *136*11*09#
    Details

    Renews automatically

    Check package status: *136#

    Deactivate package: *136*00*09#

  • Internet package

    PLN 9,90
    / 30 days

    10 GB

    activate with code *136*11*01#
    Details

    Does not auto-renew

    Check package status: *136#

    One-time package

  • Internet package

    PLN 5
    / 30 days

    2 GB

    activate with code *121*11*04#
    Details

    Does not auto-renew

    Check package status: *121#

    The 1 GB and 2 GB packages can be combined and reactivated multiple times

  • Internet package

    PLN 3
    / 30 days

    1 GB

    activate with code *121*11*03#
    Details

    Does not auto-renew

    Check package status: *121#

    The 1 GB and 2 GB packages can be combined and reactivated multiple times

  • Atlantycki: 256MB

    1,2zł
    / 30 days

    activate with code *121*11*22#
    Details:

    Does not renew automatically

    Check package status: *121#

    Po wykorzystaniu internetu, dalsze koszty pobierane są z głównego konta

  • Atlantycki: 512MB

    2,5zł
    / 30 days

    activate with code *121*11*23#
    Details:

    Does not renew automatically

    Check package status: *121#

    Po wykorzystaniu internetu, dalsze koszty pobierane są z głównego konta

  • Atlantycki 1024MB

    5zł
    / 30 days

    activate with code *121*11*24#
    Details

    Does not renew automatically

    Check package status: *121#

    After data is used, further charges are billed from your main balance

  • Calls in Poland

    15zł
    / 30 days

    • Unlimited calls to mobile and landline numbers
    activate with code *121*11*14#
    Details

    One-time package

  • Calls to Ukraine

    • Activate free cheaper calls to Ukraine at PLN 0,29 zł/min
    activate with code *136*11*14#
    Details

    Activation is free.

    Lowers call cost to Ukraine to PLN 0.29/min

Klucz Mobile

Your internet, your calls.

You pay when you use it. You stay as long as you like. Staying in touch with your loved ones, without overpaying.

  • 20,000+ active customers
  • since 2013 on the market
  • helpline support in Polish, English, Ukrainian and Russian

  • Number valid for 365 days

    A top-up of PLN 5 or more extends it by another year.

  • Support in four languages

    We speak your language — phone, e-mail and messaging apps.

  • International calls

    Packages include 1000 mins to the EU, India, Canada, the USA and Moldova at a great price.

  • Plus network coverage

    We run on the infrastructure of Poland’s largest operator.

  • Fast LTE and 5G internet

    Packages from 1 GB to 300 GB. No contract, no monthly fee.

  • A flexible offer

    Turn packages on and off whenever you like. You pay only for what you use.

Additional information:
  • If multiple auto-renewable packages are active on a number, each will renew separately if funds are available or after a top-up.
  • You cannot activate two identical packages simultaneously, except for the 1 GB and 2 GB packages.
  • The 1 GB and 2 GB packages do not combine with other packages.
  • If a package auto-renews, you don’t need to disable it before expiry. It will renew if funds are available; otherwise it will wait 30 days for a top-up.
  • Note! A package only auto-renews after its validity ends.
  • If you want to cancel your current package, deactivate it with a USSD code.
  • We use Plus operator top-ups. Enter the 16-digit top-up code: *123*#, press call, and wait for the SMS confirmation. Done!
  • You can also top up via your banking app – select the Plus operator. or via doladuj.plus.pl
  • To activate packages, use USSD codes. For example, to activate Giga Mega Klucz enter *136*11*04# and press the call button.
  • We recommend turning off data during package activation or deactivation.
  • Activating a new package does not disable other active packages.
  • To change a package, first deactivate the current one via USSD, then activate the new one (codes are in the package descriptions).
  • Note! Deactivate the package before its validity ends.
  • Steps: disable the active package → top up your account → activate the new package. Turn off data during this process.

  • Top up your account

    Quick, without leaving home.

    Top up now

  • Buy a starter pack

    Order a Klucz Mobile SIM online.

    Go to the shop

  • Port your number

    Keep your number, change only the operator.

    Start porting