How to force built-in apps to update on a brand new android device? I've just unpacked a new phone Moto G 2nd Gen and noticed that the Google Play My Apps is completely empty (it's for my wife, she didn't use android before).

So I updated several essential apps (chrome, gmail, maps) manually by searching them in play store manually and clicking "Update". Now they appeared in the list of apps.

But how can I ensure that all built in apps eventually update automatically as soon as they are not in the list?

It's painful to do that manually - some apps are not even in App Drawer (like Google Keyboard).

UPDATE:

Just to let you know: all the built in apps updated automatically and appeared in the list of "my apps"

PS: to be precise only some of them updated, others just appeared there waiting for granting more permissions
Open up the PlayStore, open menu and select settings.

Select second option from the top auto-update apps. Then chose if you want to update from just WiFi or incur data charges.

Sooner or later apps that have updates will want to update.

You can also go into the apps and select auto update if available.