Use SIM card slot as a smart card reader in Android phones

Samsung phones with a card slot - phones in slot Dr David Greenfield calls smartphones the world's smallest slot machine Dr Greenfield is a technology expert who has studied cell phone phones in slot There are two slots in most phones means you can use two sim cards in your phone One sim in one slot and other sim in second slot The above

phones with sd card slot 2023 SD card ; Standard: ~2 g; Mini: ~800 mg; Micro: ~250 mg · Portable devices, such as digital cameras and mobile phones · MultiMediaCard