SIM cards have changed a lot over the years. They used to be much bigger. Now, they are tiny. We have three main sizes: standard, micro, and nano. Most new Samsung phones use a nano-SIM. But there is a new type of SIM card called an eSIM. The "e" in eSIM stands for "embedded." This means the SIM card is built right into your phone. There is no physical card to put in. You can simply d... b2creviews.club