The Azure mobile application (iOS: https://apps.apple.com/au/app/microsoft-azure/id1219013620 – Android: https://play.google.com/store/apps/details?id=com.microsoft.azure) has been updated and now simplifies management operations when you have multiple subscriptions.
Previously, you had to switch between the subscription in your tenant to access the Azure resources in this subscription (as shown below)
Now, you can enable the Multiple subscriptions mode (in preview) and you will not have to switch between subscriptions and all resources are directly available no matter the subscription they are associated with.
To enable this option, just go to the Settings of the Azure mobile application and toggle on the Multiple subscription mode (preview)