I have had 4 pantech jest phones and it wont charge!!!! i had it plugged in then i thought it was charged fully cause the bars were full when i took it out.....BAM!!!! i shutt of!! im sick of it i had 4 pantech jest phones, they are the most crappiest phones in the world!!! please help!

Cell phone batteries have what is called a "memory" over time if they are charged without being fully drained they can start to not hold a charge. Unfortunetly the only fix for an issue like yours is to purchase a new battery. Your local retailer / service provider should have batteries in stock or they can order one for you.
It is recommended to allow the batteries to drain completely before charging, then allow at least 8 hours or more to fully charge. Most cell phone will show a full charge after a few hours, but this is more a fault with the software that check the batteries charge, then an actual indication of the battery being fully charged.

This happened to mine. Just pop the battery out then put it back in

It is a software problem and it needs is reloading which you cant do yourself.take it to a nearby mobile engineer to fix it

When your lg lsp 350t is fully charged, it stops reading like it is charging. You can also turn off the phone and plug in the charger, once it is full, the battery meter will turn blue or show battery full. \but when the phone is on, the way you will know that it is fully charged is that the battery shows a full bar and does not charge anymore.
Hope this information helped.

I accidentally dropped my phone in water and then the power button (red) wouldn't work. But then I took out the battery, plugged it in the charger, and then replaced the battery while it was still plugged in. It worked!

There is something wrong with your battery or memory card.
please check that your phone battery is not swollen and also check weather your phone's memory card is not infected by viruses.
PLEASE make sure that your battery is not swollen , because this might cause your phone 'burst'.

THANK YOU for contacting fixya.com

YOU MIGHT WANT TO REPLACE THE BATTERY THE LIFE MAY BE GONE CAUSING IT TO NO LONGER CHARGE

Get a can of air and blow it into the 30-pin connector and headphone jack to clear the phone of dust and build-up. This should clear up the problem. I learned this from an Apple Store Genius Bar associate.

My sister said it happened to her crappo free phone and said that it was from having it charging while at full charge. So idk how to fix it but if you get a new phone try not to do that!

If the Red Led stays turned on it is as simple as this.....the solder connecting your power on button to the system board in your phone has worn off..... you must pop the power button at the top of your phone off and you will be able to see where the soldering paste has simply worn off. At my job I have a soldering machine so it was not problem for me. I simply took pasted it back to the board with tin.....now this may require some work. just pop off the top section of you phone with a flathead screw driver and pop out the power button. look closely and you should be able to see where the botton has lifted from the little greenish system board..... Find someone to solder it, put it back together and it works like new.........SEE YA