If the handset is acting strange or not responding, a soft reset may return it to proper working order.
While the handset is on, pull the battery cover off to remove it.
Remove the battery from the case and wait 10 - 30 seconds.
Re-insert the battery and slide the battery cover back into place. The handset will turn back on.
Note: If the handset does not automatically power back on, press and hold the End/Power key to turn it on.
The soft reset is complete.