How my phone SIM card will work?

If your asking how to use a SIM card it is very simple. First identified the sim type there is SIM Card and (E) SIM

SIM Card

• For a SIM card open the sim tray on your iphone you can do this by pushing a small cylinder object into the hole on the left side of your phone.
• Next put the sim card into your phone and close the sim tray
• now identify if your SIM card works but checking if the “No Service” Says your mobile carrier name

E Sim

• Check if your phone is compatible with (E)SIM
• if go to settings > Mobile > Add Mobile Plan
• Now scan or enter the SIM Code you obtained from your mobile carrier
• now identify if your (E) SIM works but checking if the “No Service” Says your mobile carrier name