Combo-box in mobile

I am designing a mobile web from that is heavily based on drop-down (when user select item from a list) and combo-box (when user can or select from list or filter list by typing)

From what I have seen most combo-box are opens in a new page so there will be enough space for the list and the keyboard (if user tap the text area). Regarding dropdown - some uses the device native picker and other open the drop-down list very similar to how it is done on the desktop which is OK if the items are short.

It should be noted that the content of this control are dynamic and generic so I can't "nail" a specific UI for it (for e.g. use segmented control instead).

I am looking for inspiration and best practices to how to display it on the mobile.