Samsung SCH-I830MSASPR - Manual (Page 168)

160 Section 2I: Sprint Worldwide Wireless Service
Using Your Phone in GSM Mode
Entering GSM Mode
Once you have installed the SIM card, your phone may be
used in GSM mode on GSM networks while traveling
internationally. To operate on international GSM networks,
you need to switch the phone from CDMA (default) mode to
GSM mode.
To enter GSM mode from CDMA mode:
1. With the slider closed, tap the Start menu bar and then
tap Settings.
2. The Personal tab is highlighted. Tap the Service Mode
icon. The following options appear in the display.
Ⅲ
Int’l GSM
Ⅲ
Sprint CDMA
3. Tap the radio button next to the desired mode of
operation, and then press
. A dialogue box appears in
the display asking if you wish to reset modes.
4. Type Yes and press OK. Tap Cancel to return to the
previous screen.
If you pressed OK, the phone restarts and powers up in the
selected mode of operation
Note: While in the United States, the IP-830w will operate only in
CDMA mode; domestic GSM networks will not be accessible
via this phone.