We've loaded Collector 18.0.3 on a Motorola G6 Play smart phone.
We followed Kylie's December, 2018 instructions for "Try Collector for ArcGIS" but found that far from all of steps and options and buttons that she used in working with the sample maps were available. For example, in following the steps she set out in working with the Park map, we found no option in Collector to take a photo of the picnic table. In another example, one with instructions on collecting data offline, hardly any of the buttons steps outlined in the example were available to us.
So, what are we missing?