How to open SIM card tray
iPhone 6, iOS 12
You can use a paper clip. See instructions in Remove or switch the SIM card in your iPhone - Apple Support
You can use a paper clip. See instructions in Remove or switch the SIM card in your iPhone - Apple Support
Follow the instructions here:
Remove or switch the SIM card in your iPhone - Apple Support
However, I notice you're using an iPhone 6. If you're getting a newer device, your existing SIM card may not be the best option. SIM Cards are essentially just keys to tell carriers where to send your cellular data. However, newer phones require a different type of SIM card -- otherwise you could experience a ton of different connectivity issues. You can contact your carrier for more details, if needed.
How to remove SIM card
