I recently bought a PS Vita OLED model that just happened to have 3G/cellular network capability. The person I bought it from said the battery doesn't hold a charge over a day when turned off. I replaced the battery in hopes that would be the issue. Like before, the Vita had no charge after a day of being turned off. I removed the SIM card and turned off the GPS to no avail. Doing a Google search showed others had this problem as well but no real solution beyond what I did.

Anyone have any thoughts on this?