Huawei Ascend G630-U20 User Guide - Manual (Page 11)

Getting started
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2. Insert the micro-SIM card. Make sure the gold contact area and beveled
edge of the card are facing the right directions.
3. Close the battery cover.
Removing a micro-SIM card
Don't remove the micro-SIM card when your phone is powered on.
1. Open the battery cover.
2. Take out the micro-SIM card.