tree 72aaf347eb5b88e354d2b560c9bef56ab1d6cdf4
parent 66304f698f561779bd820dfda3b6a12c423270bc
author Amit Mahajan <amitmahajan@google.com> 1504031988 -0700
committer Amit Mahajan <amitmahajan@google.com> 1504813797 -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