Telephone contact
You can reach us by telephone at any time.
Whether it's a traditional SIM card or an eSIM in your device, the SIM connects you to our network. This means you can make calls and surf the internet anytime, anywhere, without being tied to a specific location.
We are happy to help you with any questions you may have about SIM cards – simply select whether you would like to find out more about ordering (including exchanges), activating, unlocking/blocking or further assistance (e.g. regarding PIN/PUK).
A note in advance: Before activating your eSIM, ensure that you are connected to Wi-Fi. If you are using a VPN connection, please switch it off beforehand.
When you renew your contract, we will check your current SIM card at the same time. If you need a new SIM card, we will send it to you.
If you have already used an eSIM, we will send you a new personal QR code. You can activate this online and then scan it to set up your new device.
Would you like to use an eSIM but haven't received a QR code? In this case, you can order an eSIM via the replacement card service in the Business Service Portal (BSP). Further information can be found here.
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A note before you begin: Before activating your eSIM, ensure that you are connected to Wi-Fi. If you are using a VPN connection, please switch it off beforehand.
If you have received a device with your contract, the eSIM profile will be loaded automatically and directly when you set up your device.
Haven't ordered a device or bringing your existing phone number with you? Then activate the eSIM profile as follows: Scan the personal QR code you received by post with your smartphone camera. Then follow the instructions on your mobile phone.
Please note that if you are transferring your phone number, the personal QR code can only be scanned on the agreed date.
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A note before you begin: Before activating your eSIM, ensure that you are connected to Wi-Fi. If you are using a VPN connection, please switch it off beforehand. Have
you ordered a replacement card as an eSIM profile? Then activate the eSIM profile as follows:
Scan the QR code that you received by post or online with your smartphone camera. Then follow the instructions on your mobile phone.
If you still require assistance, our service team will be happy to help. Contact us now!
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Would you like to activate an eSIM
profile for a smartwatch? If you have already ordered a new MultiSIM as an eSIM in the Business Service Portal (BSP) or would like to use a MultiSIM from your inventory for the smartwatch, please open the corresponding app (Watch app for iPhone or Galaxy Wearable app for Samsung) and follow the instructions there.
Don't have a new MultiSIM yet?
In that case, you can order one as an eSIM in the Business Service Portal (BSP). For more information on ordering your eSIM profile, click here.
If you still require assistance, our service team will be happy to help. Contact us now!
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When extending your contract, we will check your current SIM card. If your new device requires a different SIM card, we will enclose a letter with the appropriate SIM card in the package. Once you have received your SIM card, you can activate it online.
Do you have further questions about activation? Our service team will be happy to help you. Contact us now!
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If you are transferring your phone number from another provider, we will activate the SIM card on the agreed date. Otherwise, the SIM card is already active and ready for use upon receipt.
If your desired device is not available or you have arranged a desired date, we will have suspended your contract in the meantime. You can find out more about this under "My contract has been suspended. How do I reactivate the SIM card?".
Do you have further questions about activation? Our service team will be happy to help you. Contact us now!
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If you already have a replacement card, you can also activate it online.
Do you have further questions about activation? Our service team will be happy to help you. Contact us now!
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We are delighted that you want to stay with us. We will be happy to activate your mobile phone contract within 112 days of disconnection. Please contact our service team to do so. Contact us now
However, this is not possible after a card replacement or if the MultiSIM has been cancelled. Alternatively, you can order a new SIM card at any time. You can find out how to do this in the FAQ "How can I order a MultiSIM?".
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Would you like to reactivate your suspended contract? Our service team will reactivate your SIM card. Contact us now.
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You can activate your replacement card online. All you need is the old and new card numbers for your SIM.
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You can order an eSIM via the Business Service Portal (BSP) under the menu item "New Business". During the ordering process, you can then select the eSIM profile as your desired card format under "Card Type".
If you order a device with your contract, the eSIM profile will be loaded automatically and directly when you set up your device. If you do not order a new device or transfer your existing phone number to us, we will send you a personal QR code to activate the eSIM in your device.
If you are not yet a customer, you can also simply order your new contract online directly in the shop. Have
you ordered an eSIM and want to learn more about setting it up?
Further information on activating/setting up your eSIM profile can be found here.
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When you extend your contract, we will check your current SIM card at the same time. If you need a new SIM card, we will send it to you.
If you already use an eSIM, we will send you a new personal QR code after you place your order. Have
you ordered an eSIM and want to learn more about setting it up? You
can find more information about activating/setting up your eSIM profile here.
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Do you already have a SIM and would now like to switch to an eSIM? You can change the card format to an eSIM profile via the "Replacement Card Service" in the Business Service Portal (BSP). For more information on ordering a replacement card, see "More on ordering" under "How can I order a replacement card or a new card format?"
Have you ordered an eSIM and want to learn more about setting it up? You
can find more information about activating/setting up your eSIM profile here.
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Would you like to order an eSIM
profile for a smartwatch? If you already have a MultiSIM and want to use it for your smartwatch, please open the corresponding app (Watch app for iPhone or Galaxy Wearable app for Samsung) and follow the instructions there.
Don't have a MultiSIM yet or need another new MultiSIM?
In this case, you can order one as an eSIM in the Business Service Portal (BSP). If you already have the EID of the smartwatch, you can enter it directly in the order and then simply set up your smartwatch in the corresponding app.
For more information about ordering a MultiSIM, see "How can I order an additional SIM (MultiSIM) with the same phone number for my contract?"
If you still require assistance, our service team will be happy to help. Contact us now!
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Simply book another contract yourself in the Business Service Portal (BSP). Here's how:
Alternatively, you can order your new mobile phone contract directly from the online shop.
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It usually takes two to four working days for your new SIM to arrive. This also applies to the letter containing your personal QR code for setting up your eSIM.
Are you transferring your phone number from another provider to Telekom? Then we will first coordinate the transfer date with your previous provider before sending you the SIM card or personal QR code for the eSIM in your device.
Please note that the SIM card will only be activated on the agreed date and the personal QR code for the eSIM can only be scanned on that date.
If you have any further questions about the delivery of your SIM card, our service team will be happy to help. Contact us now!
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You can order a replacement card or a new card format under "Replacement Card Service" in the Business Service Portal (BSP). Here's how:
If you are not yet using the Business Service Portal (BSP), our service team will be happy to assist you. Contact us now!
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You can easily order an additional SIM card for your existing contract yourself in the Business Service Portal (BSP):
If you are not yet using the Business Service Portal (BSP), our service team will be happy to assist you. Contact us now!
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You can block the SIM yourself in the Business Service Portal (BSP):
If you are not yet using the Business Service Portal (BSP), our service team will be happy to assist you. Contact us now!
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You can block and unblock chargeable services in the Business Service Portal (BSP):
If you are not yet using the Business Service Portal (BSP), our service team will be happy to assist you. Contact us now!
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You can easily unlock your blocked SIM card in your Business Service Portal (BSP).
If you are not yet using the Business Service Portal (BSP), our service team will be happy to assist you. Contact us now!
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You can manage your SIM yourself in the Business Service Portal (BSP) and set up a contract lock. Here's how:
If you are not yet using the Business Service Portal (BSP), our service team will be happy to assist you. Contact us now!
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You can block premium rate service numbers yourself in the Business Service Portal (BSP). Here's how:
If you are not yet using the Business Service Portal (BSP), our service team will be happy to assist you. Contact us now!
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First, lock your SIM card. You can find out exactly how to do this here.
You can then order a replacement card directly online via the Business Service Portal (BSP):
If you are not yet using the Business Service Portal (BSP), our service team will be happy to assist you. Contact us now!
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If you are unable to establish a mobile connection, there may be several reasons for this.
We have compiled various tips for you on our help page, which often allow you to easily resolve the issue yourself.
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You will receive the PIN and PUK together with your SIM card. Alternatively, you can also view the data in the Business Service Portal (BSP):
Please note: If you have changed the original PIN yourself, you will only see an empty field in your Business Service Portal (BSP) for data protection reasons. If this is the case for you or if you do not yet have access, our service team will be happy to help you. Contact us now!
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If you enter your PIN incorrectly three times, your SIM card will be automatically blocked. You will then need the PUK to unblock it. We sent this to you together with your PIN and SIM card. Alternatively, you can find your PUK in the Business Service Portal (BSP):
You will find the PUK there.
Please note: If you enter your PUK incorrectly ten times, your SIM card will be completely blocked for security reasons and cannot be unblocked by us. In this case, please order a replacement card from the Business Service Portal (BSP). Further information on how to order a replacement card can be found here.
If you are not yet using the Business Service Portal (BSP), our service team will be happy to assist you. Contact us now!
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Find out everything you need to know about transferring your mobile or landline number – explained simply, transparently and step by step.
Get all the important information you need to take over an existing contract – compact, understandable and in one place.
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