This Samsung Galaxy A40. Yes, it works. : r/hardwaregore
Full Working For Samsung Galaxy A40 A405fn Motherboard 64gb Eu Version 100% Unlocked Original Logic Board Mainboard - Mobile Phone Antenna - AliExpress
100% Original Unlocked Motherboard Mainboard Logicboard 64g For Samsung Galaxy A40 A405f/fn/fd/g Motherboard With Android System - Mobile Phone Antenna - AliExpress