How to Use Your Phone Without a SIM Card by Suzanne Kantra on March 17, 2023 You don't need a SIM card and cellular service to use most features of today's iPhones and Android phones.

With direct-to-device service, consumers can make video and audio calls without a regular network or SIM card.

BSNL is now testing the D2D (direct-to-device) service, enabling users to send messages and make audio or video calls without needing a SIM card. This service is part of seven new offerings ...