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.
Restart your phone: Press and hold on the sleep/wake button and when the red slider appears drag it to switch off your device. Step #4. After a while, press and hold on the sleep/wake button to switch on your iPhone. Turn Off SIM PIN. Turn off SIM PIN, if you have accidentally enabled it. SIM PIN is used to prevent access to cellular data network.