231K views · 540 reactions | Labing-anim na international mobile subscriber (IMSI) catcher ang na-recover ng PNP Anti-Cybercrime Group sa isang entrapment operation sa Paniqui, Tarlac. Arestado ang online seller nito. | via Zyann Ambrosio, ABS-CBN News | ABS-CBN News | Facebook

THE STORY OF THE SIM CARD: FROM PATENT TO POCKET A Short History INTRODUCTION: MORE THAN JUST A SMALL CHIP We slip them into our phones without a second thought, but the Subscriber Identity Module (SIM) card revolutionized how we connect to mobile networks. It turned phones from fixed devices into personal tools we could take anywhere – and its journey from concept to pocket-sized staple is full of innovation. THE EARLY DAYS: WHY WE NEEDED A SIM In the 1980s, mobile networks were fragmented, and

A SIM (Subscriber Identity Module) card is a small card used in mobile devices to: Key functions: 1. Identify and authenticate: Verifies your identity to the mobile network. 2. Store data: Holds phone numbers, text messages, and other data. 3. Enable network access: Allows you to make calls, send texts, and access data services. How SIM cards work: 1. Unique identifier: Each SIM card has a unique IMSI (International Mobile Subscriber Identity) number. 2. Authentication: The SIM card authenticate