CloseSamsung Gear S2 Classic1 4An eSIM is a rewritable SIM built into secure hardware inside a phone, watch, tablet or connected device. A carrier verifies the customer and sends an encrypted subscription profile to that hardware. Once installed, the profile authenticates the device to the mobile network in much the same way as a removable SIM card. The gain is easier activation, multiple stored plans, better travel options and a SIM that cannot be pulled out of a stolen phone. The trade-off appears when a phone dies or a transfer fails: moving an eSIM can depend on the old device, internet access, carrier systems and identity checks.The QR code is not the SIM. The carrier app is not the SIM either. Both are ways to start a secure download into a protected component already inside the device.About The AuthorAt heart, I am a storyteller drawn to the watershed moments that bend the technology landscape. I braid narrative with data, humanise statistics, and trace the arc from first spark to world-changing impact. My reportage, features and reviews are witty, sardonic, visual and vivid, using anecdote to illuminate rather than eviscerate.
As a technology journalist with over sixteen years of experience, I have travelled the world and the seven seas, covered every major tech conference worth its lanyard, chronicled the defining breakthroughs of the last decade and a half, and played a pivotal role in launching some of India’s most important technology publishing platforms across web, print and TV.