The old 'tried and tested' method - of removing & re-installing the battery ! Killing all power to the phone will force it to stop whatever it's doing wrong !
Try taking the battery out, then putting it back in and turning your phone back on. That should work.
A cell phone usually works better with a portable wall charger. Connecting a USB into a cell phone from a mac or computer May cause the USB port to fall asleep when the mac or computer goes into sleep mode.
You need a USB lead. This usually comes with the phone.
You don't use the USB, you download it straight from the PSN.
You can download cell phone ring tones at many different sites online. If you are using a PC you must use a USB cable to transfer to your phone. Depending on your phone, you may need to install software on your PC.
You can download from the computer to a phone either by a Bluetooth connection, or by a USB cable.
To download pictures from your cell phone to your computer using a USB cable, first, connect your phone to the computer with the USB cable. On your phone, select the option for "File Transfer" or "Media Transfer Protocol (MTP)" when prompted. On your computer, open File Explorer (Windows) or Finder (Mac), locate your phone under "Devices," and navigate to the folder containing your pictures. You can then copy and paste or drag and drop the desired images to your computer.
You can email it to yourself and download it to your PC from your email. You can also plug your phone into your PC via USB and drag and drop the photos.
You can get a cell phone usb cable from several online reatailers. You will find great deals at www.amazon.com.
USB Jack
it means that u can download songs,videos,images with the usb chord from computer etc.
it wont. it will never be. cheap phone. good for nothing!