Remember that, in a pure hydrogen economy, the electrical generating capacity will have to approximately double because all of the energy for transportation that currently comes from oil will have to be replaced with electrically generated hydrogen. So the number of power plants will double, and all of the fossil fuel plants will be replaced.
The iPhone will reboot. Once it turns on, the default network settings will be restored. The Apple iPhone 3GS has many reset options. Wiping the network settings will reset all the current network settings to default. The Apple iPhone 3GS has many reset options.  Please let us know how we can improve this support content by leaving your comments below.
What does the pad lock icon with the arrow on my iPhone mean? What does the pad lock icon with the arrow on my iPhone mean? If you're seeing an icon of a padlock surrounded by an arrow in your iPhone's icon bar, it means that your iPhone has rotation lock enabled. Rotation lock allows your iPhone to be locked or frozen in portrait mode. In other words, turning your iPhone horizontal won't cause the screen to rotate into landscape mode.