Fourth generation iPhone. Repair is straightforward, but the front glass and LCD must be replaced as a unit. GSM / 8, 16, or 32 GB capacity / Model A1332 / Black and White. This page aims to help users troubleshoot, fix, and seek help for the iPhone 4.
Are you using an original charger if not try one - if you are, have you tried plugging into different computers/sockets. If you have you may need to replace the connector port.