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Today I ran into a Problem with my Blackberry 8220. I turned it on and it said to "INSERT SIM CARD". To my surprise I realized I never removed the sim card. At this point i realized because of this error , I was unable to make calls or sent texts or anything else...I was freaking out! After taking the battery and sim card out and restarting the phone several times, I still had no luck!"INSERT SIM CARD "was still there!!! I arrived at school turned on my laptop and searched google and found the great CRACKBERRY web site. After searching a bit I ralized this was a common issue with my phone. Someone suggested i try a piece of paper behind the sim card. This would allow the thin simcard to press against the spring inside for a better connection. First i tried a piece of copy paper I ripped and slid on carefully...Tried restarting and ther it was again"INSERT SIM CARD"..At this point I couldnt give up so i tried something thicker...a piece of cardboard from the back of my Managing and Maintaiining Microsoft Server 2003 Book. Its the card board that is at the back of the book where you find the supplemental CD/DVD. What made this even better was the fact that when i ripped a piece it had some adhesive on it so it stuck right on the sim card!! I tried it and ...it worked!!!!!!...So there you go...my Blackberry 8220 insert sim card TIP!!!!!
Yesterday I also got the same problem on Samsung DUOS SGH-D780! I found temporary solution how to drop this error message and run the phone normally, but after next reboot it often become again. I will ask Samsung tech. support about this, but now here is the emergency solution:
1. Turn OFF the phone (by removing the battery) 2. Move out all the SIM cards from the phone 3. Insert the battery again (BUT DON'T TURN ON THE PHONE, just insert the battery) 4. Insert a charging cable into the phone and insert the adapter in wall outlet
(then I see the loading screen for the short time and after that CHARGING icon appears)
5. After that turn ON the phone. It will start in no-sim mode. 6. Turn OFF the phone 7. Remove battery, insert SIM-cards, insert the battery. 8. Turn ON the phone
After that it gonna be work good until next reloading...
charge the phone with its own charger. dont use universal charger or other nokia mobile charger. china mobile have this problem. so charge the battery with the charger that came with it. hope ur problem will be solved.
Look at the gold contact points on the back of the SIM card. Check to see if there is any obstructions on them. If there is, take a slightly damp (not a lot of moisture!) paper towel and rub over it. Then dry it. Try putting it in your phone and see if it works. If it does, there you go.
If it doesn't, you might want to consider getting a new SIM card......