Hi, thanks for posting your Question.
When trying to activate the contact list, Phone contact are stored in two places in phone..
On the Sim card, and the other on the phone...
When you save the contact on the Sim card and you activate the contact list to view only Sim contact, You might not be able to access contacts on the Phone memory..
You will need to activate both the Phone contact list and the Sim card for you to be able to access the contact list...
To check and see more about Saving contact and activating it , you can use the Manual, it will help..
You can download the manual from the below link:
http://www.manualowl.com/p/LG/VX-5400/Manual/17524Thanks for using fixya...