By pressing the lock button on the top right of the iPhone.
You can't lock your iPhone apps without jailbreaking the phone.
Yes. If you update your iPhone's software using iTunes it will lock your iPhone again. You will then need to unlock it again.
The iPhone 2G.
Overlock? By trying to put in a fake passcode to a lock screen it is possible to lock yourself out of the iPhone for a pre set time.
Yes you can but it's not as polished as the iPhone's lock or an Android phone's lock screen. And if you meant does this phone have a "lock screen" when you put it to sleep like the iPhone, no it doesn't
Yes, you can buy international iPhone's version (a iPhone with out Internet) in eBay or amazon, some iPhone that sell outside U.S, is international iPhone' version. You can use it with any network that you like.
There is no way to do that. If you jailbreak your iPhone there is an app on Cydia that does that.
An iPhone 5 is the latest version of the iPhone. The iPhone 5 is the lightest and slimmest of all the iPhone models.
No it shouldn't, unless you have your lock set to come on after a restart.
Just download the iPhone version. There is no native iPad version, but you can get the iPhone version and it should run just fine.
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