Samsung Galaxy S4 User Manual page 21

Installing and Removing the SIM card
This device uses a different type of SIM card called a "micro SIM".
Other larger SIM cards will not function or fit within this slot.
To install the SIM card:
1. Carefully slide the micro SIM card into the SIM card socket
until it clicks into place.
Micro SIM card
2. Make sure that the card's gold contacts face into the phone
and that the upper-left angled corner of the card is positioned
as shown.
To remove the micro SIM card:
1. Remove the battery cover.
2. Carefully place your fingernail into the end of the micro SIM
slot and push the card slightly out.
3. Carefully slide the card out of the micro SIM card socket.
Getting Started 13