1## 9.15\. Subscription Plans 2 3"Subscription plans" refer to the billing relationship plan details provided 4by a mobile carrier through [`SubscriptionManager.setSubscriptionPlans()`](https://developer.android.com/reference/android/telephony/SubscriptionManager.html#setSubscriptionPlans%28int, java.util.List<android.telephony.SubscriptionPlan>%29). 5 6All device implementations: 7 8* [C-0-1] MUST return subscription plans only to the mobile carrier app that 9has originally provided them. 10* [C-0-2] MUST NOT remotely back up or upload subscription plans. 11* [C-0-3] MUST only allow overrides, such as [`SubscriptionManager.setSubscriptionOverrideCongested()`](https://developer.android.com/reference/android/telephony/SubscriptionManager.html#setSubscriptionOverrideCongested%28int, boolean, long%29), 12from the mobile carrier app currently providing valid subscription plans. 13