Samsung SGH-T999MBATMB - Manual (Page 15)

Getting Started 9
To replace the battery cover:
Ⅲ Position the battery cover over the battery
compartment and press down until you hear a click.
SIM Card Overview
Important! Before removing or replacing the micro SIM card,
make sure the device is switched off. To turn the
phone off, hold down the
key until the
power-off image displays, then tap Power off.
The micro SIM card is loaded with your subscription details
such as your telephone number, PIN, available optional
services, and many other features.
Important! The micro SIM card and its information can be
easily damaged by scratching or bending, so be
careful when handling, inserting, or removing the
card. Keep all SIM cards out of reach of small
children.
Some features on your device (such as Wi-Fi Calling) can be
unlocked by using the new micro SIM card.
To use this new micro SIM card, call or contact T-Mobile
customer service for more information.
This card contains the necessary information for identifying
and authenticating the user to the IMS (IP Multimedia
Subsystem).
Release Latch