There are a few possible solutions. First let's check that our device is charged, if it is not charging properly this could be due to a faulty battery or charger. Test to see if your phone charges when plugged in, if it does not we suggest trying to charge with a similar charger. After these steps, if your device still will not power on it is most likely due to a faulty battery that needs to be replaced. Our repair guide on replacing the battery should come in handy.