Users who access the Symphony service provided at https://my.symphony.com (the free, public version of the product) can update the mobile number displayed on their Symphony profile by following these steps:
1. In Symphony, click Settings in the upper right-hand corner, followed by Security (Figure 1):
Figure 1 Settings/Security
2. Click Edit next to the Mobile Number field (Figure 2):
Figure 2 Edit
3. Update the mobile number as required
Note: Once updated, you can click verify to send a code via SMS to the new mobile number
4. Update the Frequency for Two-Step Verification as desired (Figure 3):
Figure 3 Frequency
5. Click Update (Figure 4):
Figure 4 Update