It was the size of a credit card, although the total area of the gold-colored contacts was the same as we see now. Mini-SIM and micro-SIMs were introduced later on, with the intention to reduce ...

A micro SIM card is the middle size. These have more plastic around them than a nano SIM, but less than a standard SIM. They also have a slightly larger chip. In terms of smartphones, you might need ...

Nano-SIM cards can use adapters to gain compatibility with devices with Micro-SIM and Mini-SIM slots. A Micro-SIM card can also be fitted in Mini-SIM slot with an adapter. In 2016 the eSIM ...