I have nothing on my display screen. Battery is charged

Let it "charge" for a few hours and then look at the battery indicator.

it could be a faulty led panel ,

can u hear any sound like nokia tune which comes when u turn on your mobile? It could be because your display is damaged or not working so please visit nokia showroom and they will help you.

There can be several things which can be reason for blank screen like:
1. Your display is not working
2. Battery of mobile is not working.
3. May your mobile is not charged and charger which you are using is not working. Try charging with some other charger of nokia same pin.
4. It could be software issue. Please update software in your mobile.

60% it could be a display issue.

firstly, try to use another charger, if the problem continue, you can replace the battery of the phone and if this still continue replace the charging port with a good one .

I unplugged the base unit from the wall for more than 10 minutes. Sometime after I plugged it back in (not immediately)the display re-appeared.

I have an 890 also. I've found that the remote doesn't always charge when it the charger. I have to put a rubber band around it and make sure it shows that the the battery symbol on the display is showing that it charging. Or the battery isn't taking a charge anymore and I'd try to replace it. Doesn't really hold a charge very long either.

Yes the software is the problem. Try updating your firmware. It can be downloaded.

DC power will not properly charge the battery. It is possibly damaged. Change i. Preferably charge it via AC before using on DC.
But change battery....

hi.there...don't worry.. what happens with your new cellphone..is normal..why? when your battery is low and there a pop up screen at the display "battery low...please recharge" that's mean you must charge the battery soon.
when connect your phone to charger adapter and your battery is very low / weak condition the display only showing "hellomotto" and nothing else. but it's normal! diplay need more power from you battery to showing all information.after the battery reach the minimum power to display it ( usually after 15-20' charging) try to push red bottom at your keypad phone and the display will showing again..good luck..

First of all remove battry and reinsert it but don't push the ON switch.Press imate keyboard top second left and second right (near by call keys) buttons together, holding down with push the soft reset button,these all three buttons should be pressed firmly.after this a message will appear on the screen then press 0.this will hard reset ur device and restore the factory settings.