OptionalaccountsOptionalappThe app version the values were kept under (MobileApplicationState.APP_VERSION,
written by KeepMobileConfigAnswer). The keys and field numbers of the
store are the writer build's wire facts, so a store kept under another
version is dropped on restore (a restore is an app update, and the app
re-reads its config on one): the restored device starts with no kept
values, and every parameter reads the new build's default until its next
answer. A store that records no version was written by no build of this
library and is dropped the same way.
Optionalsessionless
The MobileConfig values a device keeps (
mobile.mobile-config.ts): the sessionless unit, and the user unit of each account that signed in on the device, by account id — the app keeps an account's config across a logout.