Problem with Contacts for 6500 slide

Question

I recently bought a Nokia 6500 slide and i`m very pleased, except one thing.
I used to have some other phones, and all my contacts were on the memory of that phone (not on the SIM).
For me to have my contacts on the 6500 slide, i had to move all those contacts on the sim, then insert the sim into the 6500 slide and move them again from there to the phone memory (i hate having my contacts on the sim couse i can't add any aditional info).
Ok, so.. after i moved all my contacts to the phone memory, i saw that from about 200 contacts, i only have about 20. At first i thought "ok, there was a problem with the moving process and i lost them all..." I was just about getting over this, when I realized that those numbers that I lost are still in there, but i can't see them.
If I manualy enter a number of a contact that don't show in my Contacts List, when it dials, the number appears on the screen. Same if that contact calls me. I can't see them in the Contact List tho.
It's like there are hidden or something..
I tried changing the settings so that i can see only the contacts in the SIM (in which case, none apear), only in the phone (only those 20 or so appear) or showing both (still, only 20 or so appear).
The contacts are not in the SIM couse i tried putting the sim back in the old phone, and it's empty.
They must be somewhere in the phone. Is there a hidden setting that i can find, that allows me to see those contacts that I thought I lost? It's very annoying to wait till someone calls me so I can add his number again in the phonebook
To be more specific, let me give an example.
Let's say I had contact "John" with the number "12345678". Now I can't see it anymore.
If i dial 12345678 and then hit "Call", it apears like "Calling John"
If John calls me, it apears like "John" on the screen.
If i try to add John to the phone book I get a message like "A name is already entered for that number"
It's like... all the contacts are already there, but I can't see them
Can someone help me please... I`m really desperate

Answer 1

Hello and welcome to the forums;
First, you mention the error references a SIM card, however your profile says you have a Sprint device. A small problem there, and I would like to clear up any confusion as which device you have: a Sprint CDMA device, or one with a SIM card.
Second, have you tried restarting your device? Hold down the power button and move the ringer mute switch next to it back and forth 3 times, then wait 4-5 seconds for the device to restart by itself.
Try this, and let us know what happens.
TreoAide