You can change your registered mobile phone number yourself within the settings of your BISON account. You will need access to the mobile phone number that is currently registered with your account because your 2FA code will be sent to this number via SMS.
If you no longer have access to this number, you will have to contact BISON support to make the change. For this, please send evidence of your new number by email to support@bisonapp.com. It is important that the number is clearly identifiable to you. The following methods of verifying your new number are accepted:
- Phone contracts (not older than 6 weeks)
- Phone bills / invoices (not older than 6 weeks)
- Screenshot of your provider customer portal / profile
- Photo of your ID card and the packaging of your (prepaid) card packet or SIM card (where the phone number is displayed) – they should not be two separate photos, but one
- In the event that your telephone contract is under the name of your spouse or parents and your last names match, additional documents such as a marriage certificate or birth certificate will be required
- Any other official documentation where your phone number and its connection to your name is visible – not all contract details need to be shown, you can hide any irrelevant information
- Any screenshot of an official government or banking institution page where you have used this new phone number (e.g. Federal Employment Agency, German ELSTER, etc.); we don't need to see all of the details, you can hide any irrelevant information
To change your registered mobile number, we also require a digital photo of the form of identification you used during your verification (ID card or passport), alongside a handwritten note.
This note must contain the following information:
· The title “BISON Phone Number Change”
· Your new phone number
· Today’s date
Keep in mind: The identification document you provide must match the identification document used during your verification and must be clearly visible. In addition, make sure that both the note and the identification document are clearly visible on one image.
Please bear in mind that this process is more time-consuming and may take several working days. For this reason, we recommend that you change your cell phone number on your own within your account.
