It is important to set up the iPhone before using it which can only be done by logging into the iCloud account. Without entering the iCloud user ID and password, no one can use the device accessing the features of iPhone. All the access to the iOS devices is locked with a personal iCloud account which requires the login details of the account.
This locks provides security to iOS devices and the user needs to enter the password every time when they want to install any application or get access to iTunes. This is done as the iCloud account of these devices are logged in with the personal Apple ID of the user. As per this feature, all your Apple device e.g., iPhone, iPad and Apple watch can be accessed only it's a real owner with some set of the password.
In the year 2014, “iCloud Activation Lock” was introduced by the Apple for iPhone and iPad ensuring the high security and privacy settings to iOS device users. So, it is preferable to go for the former one. Else, you can also unlock it by visiting your nearby Apple Store. In such a situation, you must switch to bypass the iCloud lock for the quicker solution. It is quite obvious that you are not familiar to his Apple ID and password. Suppose if you are not capable of making any contact with the previous owner then what will be your next step. If you are buying your iPhone from your friend or from eBay, you might get this general situation when the iCloud of the iPhone is locked with the previous owner of the device. Unlocking the iCloud lock on iPhone and iPad
Here, you will get the way for how to bypass the iCloud lock on iPhone and iPad. This may sound very complex but here we will provide simple and detailed steps to make it easy for you. So, if you buy a second-hand iPhone and the device is locked with someone else Apple ID then that device is none of your use until and unless you unlock the iCloud bypassing the Apple ID lock. Especially taking the advancement in the Apple technology, it is completely offering security services to users which creates the need to remember the Apple ID and password. This creates a problem for the user who buys it.
It has been commonly seen that people forget to remove their Apple ID from the iOS devices when they stop using it or sell it.