Installing The Sim Card And Battery - Huawei U3900 User Manual

Charger jack/USB
17
port
19 Headset jack

2 Installing the SIM Card and Battery

Before you begin to use your phone, a SIM card must be inserted.
Follow the steps laid out below to insert your SIM card into the
phone.
Power off your phone before attempting to remove the battery or SIM
card.
18 Loudspeaker
20 Camera
7