You can only protect your account on the website.
Yes. If you update your iPhone's software using iTunes it will lock your iPhone again. You will then need to unlock it again.
Yes, by plugging the iphone into your computer and updating the software on it using itunes.
By pressing the lock button on the top right of the iPhone.
You can't lock your iPhone apps without jailbreaking the phone.
Go to settings general passcode lock set code
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
There is no way to do that. If you jailbreak your iPhone there is an app on Cydia that does that.
Settings>general>accessibility>assistive touch>device>lock screen.
No it shouldn't, unless you have your lock set to come on after a restart.
The setting to make the screen flip on the iPhone 5 depends on what version of iOS you are using. If you are using iOS 7 or higher, simply swipe your screen up from the bottom and tap on the little lock icon.
jailbreak and download androidlockxt
Unlocking an iCloud lock on an iPhone using IMEI online is generally not possible through legitimate means. Apple’s activation lock is designed to protect user data, and bypassing it typically requires the original owner's Apple ID and password. Any online service claiming to unlock iCloud locks using IMEI may be fraudulent or illegal. It's best to contact Apple Support for assistance if you have legitimate ownership of the device.