LG U8150 Manual Del Usuario página 243

4. If you configure the Network mode to UMTS only, the phone only
searches for available UMTS PLMN when it is turned on. If the
phone is outside of the UMTS service area, the phone enters No
service status.
5. If you configure the Network mode to Automatic, the phone
searches for available UMTS and GSM PLMN when it is turned
on.
9.4.3 Preferred lists
1. Select Preferred lists to display the preferred list saved in the
current SIM card.
2. You can edit and save a preferred list in the SIM card by
selecting the menu when the preferred list is displayed.
- New : Adds an item selected from the popup list to the preferred
list.
- Delete : Deletes the value of the preferred list item.
- Move up : Moves the preferred list item up.
- Move down : Moves the preferred list item down.
9.4.3.1
Select Save to save the preferred list values in SIM.
Settings
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U8150 User Guide