Can I save a contact filter and switch to it quickly?

Yes, with saved views, free on iOS and Android. In Contacts, tap the Sort & Filter button (the sliders) at the top, choose filters and a sort, then tap Save as view at the top and name it (up to 30 characters), such as Bible studies or Spanish territory. Your views appear as buttons under the search field, above the last-visit chips, and at the top of the map: tap one to show it, and tap it again to return to your own filters. A view applies to the list and the map alike. Search text isn't saved in a view. While a view is showing, changes you make in Sort & Filter or with the last-visit chips are marked Edited; tap Update view to keep them, Save as new view to keep both, or Reset to discard them. To reorder your views, touch one, pause briefly, then drag it along the row. Touch and hold a view without moving to rename or delete it, or choose ••• → Edit Saved Views to rename, reorder, and delete views. Deleting a view never changes your contacts. Renaming or archiving a contact field keeps views working; if you permanently delete a field, filters on it are ignored. Views are stored on your device, included in backups, and sync between your devices when sync is on; update WitnessWork on each device to see them there. Which view is showing stays on each device. If a view shows unexpected contacts, open Sort & Filter to check its filters, or tap Reset to undo unsaved changes. For anything else, contact support from the Help Center and leave out names, addresses, and notes.