Lock is shutting something to prevent others from opening it like locking doors, vaults, or windows. Locks are opened by keys.
Unlock key, if we lock something with a key, we also open it using a key. A key is a metal specifically made for a certain lock. We place the key in the hole of the lock and twist it so we can open the lock whether it is a door, window, or anything that is locked.
Unlock is opening something that is locked by using a key. A document like word, pdf, and excel are locked with the use of codes. Mobile phone is also locked using codes. Unlock codes is what we use to unlock mobile phones.
For your mobile, when you will go to unlock code, you will have to stand on some rules, terms, and conditions.
There will be lots of advantage on unlocking your phone like increase of value, change SIMS anytime and anywhere, and be able use other networks. You always remember, upon entering the unlock codes, you only have for chances, or else, your phone will be locked permanently. The code may perform a code reset. So make sure to back up your phone book and other important files. It is also advised to back up phone settings before trying such codes.
It is very essential to have knowledge on unlocking your mobile phone.