While Apple first started supporting eSIMs back in 2018, it’s only this year that it has taken full advantage of the technology.
For the first time, Apple is using the space previously occupied by an insertable SIM card slot for additional battery capacity …
A quick history of SIMs
SIM is short for Subscriber Identity Module and refers to an integrated circuit or smart card used to store your phone’s identity number and other data. In the early days of mobile phones, it was usual to store your contacts on the SIM rather than in the phone itself.
There have been four generations of insertable SIM cards:
Original (credit card sized!)
Mini
Micro
Nano
eSIMs
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