My phone says that the charger is not supported when i plug in either the car charger or my home charger. I have tried cleaning the battery contacts with a pencil eraser but no change. Any suggestions ?

Nokia phones are notorious for slow response time when recharging from a completely dead battery.

Remove battery.
Make sure there is good contact between all of the contact points.
Replace battery.
plug in charger.
wait for at least 5 min.
If recharge symbol does not appear in window, then one of these things has occurred:
1. Phone has internal damage or water damage. no way to fix without nokia service.
2. Battery is dead. Try a new battery
3. Charger is bad. Try a new/different car charger or home charger.
These chargers are very inexpensive on Craigs List, try to solve it before throwing away the phone. Good luck,
A former Nokia employee.

It sounds like you may have a battery or charging problem.

If you use a home charger try using a car charger to see if your home charger has become defective. Same if you use a car charger - use a home charger.

If neither charger charges the phone:

1) Take the battery out of the phone.
2) Look on the battery and locate the connector(s) that provide power from the battery to your phone.
3) Take a pencil eraser and (gently) use it to clean these contacts.
4) Replace your battery and turn your phone on.

If this doesn't work, take your phone to your cellular provider's service center to have the battery checked.

Note: Battery's purchased on the retail market can cost up to $50.00. However, many batteries are sold on eBay for less than $7.00...

It sounds like you may have a battery or charging problem.

If you use a home charger try using a car charger to see if your home charger has become defective. Same if you use a car charger - use a home charger.

If neither charger charges the phone:

1) Take the battery out of the phone.
2) Look on the battery and locate the connector(s) that provide power from the battery to your phone.
3) Take a pencil eraser and (gently) use it to clean these contacts.
4) Replace your battery and turn your phone on.

If this doesn't work, take your phone to your cellular provider's service center to have the battery checked.

Note: Battery's purchased on the retail market can cost up to $50.00. However, many batteries are sold on eBay for less than $7.00.

Try to use or buy universal charger. Get your battery and charge it to universal charger. so that you can use your phone. This is the easy way so you can use your phone.

First, you need to check to see if the problem is with the phone - the battery - or the charger.

If you have a car charger, try to charge the phone with it. If it works, you'll need to replace your home charger.

If the car charger doesn't charge the phone - you'll either need to replace the phones battery or your home charger. (Sometimes the battery will go bad if you use a car charger not made specifically for the phone.)

If you replace your battery and it still doesn't charge you'll need to replace your home charger.

If after you've replaced the battery and the home charger and it still doesn't charge - your problem is with the phone and it will either need to be replaced or repaired.

Remove battery, clean contacts between battery and phone, clean charging port, also be sure to use an original Motorola charger instead of one of those "universal" type chargers.

dirty contacts
clean the plug in contacts
if posable ask a friend to try there charger

Remove the battery and clean the contact points. Also plug in the charger and try to switch your phone on. Also notice if the normal charging logo/picture is appearing or not. If the phone does not come ON while plugged in with the charger, then its a problem of the phone. However after cleaning the battery, put it back and try to switch ON without/with the charger and let us know the results............sodeep

clean the battery contact inside + battery

I plugged my phone up and all of a sudden got the message "Unable to charge" on it. I changed chargers (i had an extra one), i changed batteries (i had an extra one), and i swapped every combination imaginable.
My solution....
My Razr's plug has an opening to plug the phone that resembles a person's navel, and it got dirt and dust bunnies in it while it was in and out of my pockets. I was able to take an old tooth brush (or your new one if your really desperate), and got a can of office duster that you use to clean keyboards. Turn the can of office duster upside down for a second while you are spraying it and liquid will come out as you are spraying the connector. Immediately after that, use your toothbrush to work it inside the dirty connector to free it from anything that will keep it from making good contact. Then, hold the can of office duster upright and it will only spray air... and blow the connector free of anything that you loosened with the brush. Repeat this process if after all this it still doesn't work... because you have a REALLY REALLY dirty connector if it doesn't work after the first try.