tree 861fbd627af59d2c70ba636f5d2e403bdfc0a668
parent 80178f441abc1f9352ade9c7597de11634bac269
author Amit Mahajan <amitmahajan@google.com> 1504031988 -0700
committer Amit Mahajan <amitmahajan@google.com> 1505154492 -0700

Simplify code to preserve preferred APN across OTA update.

This also adds and keeps shared pref for longer to help debug
any issues. And includes a change to delete preferred APN ids
when APNs are deleted, as the ids may change after that.

Test: manual
Bug: 65132233
Change-Id: Ia5dab2bacc17bb6831ee80526f687cc6f56f7fc8