If you have problems with the SMS TAN to sign contracts, please note the following:
Are you not receiving a SMS TAN because your phone number has changed?
If you are fully registered, you can change your phone number yourself in the Zenjob app under
Profile → Edit personal details → Mobile number.
If you have not yet finished your sign-up, please fill out our Typeform to change your phone number and be patient. As soon as we have adjusted your phone number, you will receive a confirmation email.
You do not receive an SMS-TAN and your phone number has not changed?
Please check whether you are receiving other SMS messages without delay.
Please try signing your contract documents via a laptop/PC at a later date.
Below you will also find some more help in case of problems with receiving the SMS-TAN:
Restart your cell phone:
- First, restart your cell phone. Make sure the following:
- SIM card has been successfully unlocked
- You are in a place with good cell phone reception
Re-register the SIM card in the network:
- If restarting the phone is not enough, the card must be re-registered in the network.
- This can be done via the cell phone, but may also require the SIM card to be removed.
- The user manual of the cell phone should contain information on this.
Check whether the cell phone is set up for SMS reception:
- Enter the code *222# via the phone app keypad and confirm with the call key. With many providers, this activates or re-activates SMS reception.
Check SMS settings in the smartphone:
- Settings → "Network & Internet" → "Mobile network" → "Advanced". The menu items can differ from manufacturer to manufacturer, but are usually similar.
- For example, if WLAN telephony is enabled here, SMS messages are sent via the WLAN network. If there is no WLAN reception, SMS will not work either.
- Deactivate the option and check whether the SMS arrives or is sent.
- Please make sure that SMS forwarding is not activated!
Check the number of the message center:
- This number can be requested from the respective mobile phone provider. The number of the message center can usually be set via the options menu in the messaging application of your mobile device. These numbers may be different depending on the network provider and/or reseller.
Example for Samsung devices:
- Open the Messages app.
- Tap on the three dots ? in the upper right corner and then on "Settings".
- Tap on "More settings" - if the menu item does not exist, jump to the next step.
- Select "SMS".
- Tap on "Message center".
- Enter (or check) the number of the message center of the mobile phone provider and confirm with "OK".
Vodafone: +49 172 22 70 333
Deutsche Telekom: +49 171 076 00 00
o2: +49 176 00 00 443
E-Plus: +49 177 061 00 00
Further information can be found here, among other places:
SMS Message Center: Set up and change SMSC number
Otherwise, a request to the network provider is necessary.
Special case #1: Dual-SIM cell phones:
- On some phones that support dual-SIMS, the message center of one card can overwrite the settings of the other SIM. Here it is necessary to check that these do not collide and are correct.
Special case #2: Number portability:
- When a phone number is transferred, it can happen that the old settings are still present in the phone, even if the new SIM card from the new provider has already been inserted.
- Some phones do not seem to take over the settings correctly, because the phone number has not changed, even if the SIM card number is different.
- Again, check the settings of the averaging center.
Mobile operator malfunction:
- There may be current disruptions with your mobile provider.
- Please check your provider's website or portals, such as Overview of all disruptions for corresponding messages.
Reception quality:
- In public places or in places where there are a lot of people at the same time, the mobile network may be overloaded, which can lead to delayed SMS reception.
- Solution: please try again at a later time in a different location.
Storage space:
- Check that you have enough available storage space on your phone.
- The SMS should be stored locally on your device, as SIM cards only have space for very few messages.
Spam filter/SMS blocker:
- Spam filters can delete the SMS unnoticed or move them to the spam folder.
- Privacy/Security Apps can block SMS from identityTM or Namirial if the senders are wrongly classified as potentially suspicious. Please check your settings.
eSIM:
- Virtual mobile numbers (eSIM) that only work via app (e.g. fraenk, second phone, Numero, etc) can also be a problem when sending SMS.
WLAN telephony:
- WLAN telephony can also be a problem. The providers promise that SMS will also work flawlessly here, but this is not necessarily the case. (For example, o2 did not activate the feature for SMS reception via WLAN telephony until the beginning of 2022. Practical experience is only being gathered now).
SIM card defective:
- Check whether you can make calls. If not, and there are no current problems with your mobile provider, the SIM card might be defective. Try this in a second device to check the functionality.
Cell phone defective:
- The other way around, there may also be a problem with your cell phone. To rule this out, insert another SIM card - if available - into your device and restart it.
If you have any further questions on this topic, click Submit a Request.