Samsung SCH-I830MSASPR - Manual (Page 163)

Section 2I: Sprint Worldwide Wireless Service 155
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Removing the SIM Card
To remove your SIM card:
1. Remove the battery.
2. Slide the SIM card to the left, and then lift to remove.
Note: Press and hold to turn off the phone (if on).
IMPORTANT: Please hold the SIM card by its sides. Avoid touching the
circuits as this may cause damage to the SIM.
IMPORTANT: Sprint has provided a unique SIM card to be used with
your phone.