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.
An arrow with a lock symbol on the home screen of iphone.... 0. 0. An arrow with a lock symbol on the home screen of iPhone mean that the iPhone screen had been locked in portrait mode and it can not be switched to Landscape mode until and unless the screen lock is unlocked.To unlock this Padlock, tap the icon and drag your finger till the bottom of the screen.. 0. An arrow with a lock symbol on the home screen of iPhone mean that the iPhone screen had been locked in portrait mode and it can not be switched to Landscape mode until and unless the screen lock is unlocked. To unlock this Padlock, tap the icon and drag your finger till the bottom of the screen.