Magicjack problems hand held phone not working on magicjack. what can I do?

Have you check the breaker for the circuit its on? Is there power to the jack? If yes try using it on another jack/phone or at a friends place see if it works there. If it does the problem is either with your phone or computer connection/setup, if you are using one.

This could be failure of the power adapter module.
Is your Magicjack plugged into the wall power thru a power adapter? Try bypassing the power adapter and plugging the magicjack directly into a USB port on your computer. If the magicjack work correctly now, then you have a bad power module.
I had a similar problem. My Magicjack was plugged into a wall socket. First the dial tone became inconsistent, then I could no longer make calls out, then it died completely.
I plugged the MJ into a USB socket on my computer, and it then worked normally.

Magicjack is aware of the problem and offers a replacement power adapter module. To contact them, go to www.magicjack.com and go to "support". They will ship you a new power module for about $5.50. Some people have reported that the replacement modules from Magicjack are no better than the originals and have had repeat failures.
Consider getting a power module from another source. There are lots of AC to USB power converter modules available on Ebay for only a few dollars. Search Ebay for "magicjack power adapter".

My magic jack doesn't work. There is NO LINE

On your softphone, please do the following:

1. Click "Menu" on the top right-hand corner
2. Click "Advanced Users"
3. Click "Restart"

If your magicJack is plugged into your modem or router, unplug it from the power source, wait 30 seconds, and plug it back in.

On your softphone, please do the following:
1.Click "Menu" on the top right-hand corner
2.Click "Advanced Users"
3.Click "Restart"
If your magicJack is plugged into your modem or router, unplug it from the power source, wait 30 seconds, and plug it back in. If you are still having problems contact customer support and ask them whether your software is up to date.
If not
International VoIP Phone Service Customer Care Support magicJack

If you have a problem contact customer service here.

International VoIP Phone Service Customer Care Support magicJack

try charging it up all the way or unplug it and plug it back in or buy a new phone or different plug