To turn on an HTC phone, charge your phone's battery and press and hold the power button for a few seconds until it powers on. The phone may fail to turn on if the battery is corrupt or a user has drained the battery's power.
When turning on the phone for the first time, charge the battery fully and press the power button until the phone vibrates. You need to set it up before making calls or sending messages. If the device has a problem powering on, connect it to a wall charger and charge it for about 20 minutes. Press and hold the power button while the device is still on the charger to turn on the phone.