Question

who invented SIM card ​

Answer 1

$\mathbb{\huge{\pink{ANSWER}}}$

⭐️⭐️Giesecke & Devrient invented SIM card.

⭐️⭐️The first SIM card was developed in 1991 by Munich smart-card maker Giesecke & Devrient, who sold the first 300 SIM cards to the Finnish wireless network operator Radiolinja. Today, SIM cards are ubiquitous, allowing over 7 billion devices to connect to cellular networks around the world.

$\mathbb{\huge{\blue{HOPE.IT.HELPS}}}$

Answer 2

Aɴsᴡᴇʀ :-

• Aɴsᴡᴇʀ :-Gɪᴇsᴇᴄᴋᴇ ʜᴀs ɪɴᴠᴇɴᴛᴇʀ SIM ᴄᴀʀᴅ

• Aɴsᴡᴇʀ :-Gɪᴇsᴇᴄᴋᴇ ʜᴀs ɪɴᴠᴇɴᴛᴇʀ SIM ᴄᴀʀᴅTʜᴇ sɪᴍ ᴄᴀʀᴅ ᴡᴀs ғɪʀsᴛ ɪɴᴠᴇɴᴛᴇᴅ ᴀɴᴅ ᴍᴀɴᴜғᴀᴄᴛᴜʀᴇᴅ ɪɴ Mᴜɴɪᴄʜ, ʙʏ sᴍᴀʀᴛ-ᴄᴀʀᴅ ᴍᴀᴋᴇʀ Gɪᴇsᴇᴄᴋᴇ ᴀɴᴅ Dᴇᴠʀɪᴇɴᴛ ɪɴ 1991. Iᴛ ʀᴇᴠᴏʟᴜᴛɪᴏɴɪsᴇᴅ ᴛʜᴇ ɪɴᴅᴜsᴛʀʏ. Aᴛ ʟᴀᴜɴᴄʜ, ᴛᴡᴏ ᴠᴇʀsɪᴏɴs ᴏғ ᴛʜᴇ sɪᴍ ᴡᴇʀᴇ ɪɴᴛʀᴏᴅᴜᴄᴇᴅ – ᴏɴᴇ ᴛʜᴇ sɪᴢᴇ ᴏғ ᴀ ᴄʀᴇᴅɪᴛ ᴄᴀʀᴅ ᴀɴᴅ ᴏɴᴇ ᴍɪɴɪ ᴠᴇʀsɪᴏɴ.