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.
Check Carrier Settings. 1  Tap your â Settings â and locate the â Carrier â and â Cellular â tabs. 2  Under the â Cellular â tab, if the â Cellular Data Network â appears, your iPhone is either unlocked by the carrier or a Software method (Jailbreak and Unlock method). 3  Eject your SIM card and shut down your iPhone.ou have an iPhone in your hands right now, It might be a ânewâ or second-hand iPhone. And you need to check if that iPhone is unlocked or not. If your iPhone is locked to a particular network, you can only use it with SIM cards from that one provider. That is what we call a SIM lock.