When we buy a smartphone through a telephone operator, something that can offer us interesting advantages such as a much cheaper price, it is normal that the device is blocked to be used exclusively with a SIM card from the operator .
In other words, the phone can only work with a SIM card from the operator from whom we originally bought the device, so that certain phone can only be used to connect us by phone to its own network, even though it may originally be compatible. with another (especially when the phone is unlocked).
It is what is known as simlocker , which prevents us from using the phone with any other operator. At this point it is true that it is quite strange that this practice continues to work. Fortunately, many operators offer the possibility of providing the user with the unlock code necessary to unlock the terminal, as long as they do not have unpaid invoices.
If you use a Samsung Galaxy with a certain telephone operator, and you want to change companies but want to continue using the device, we encourage you to continue reading.
