When using Sony Ericson k750i cell phone, you may encounter several kinds of blocking. There is a certain sequence of actions that must be done, depending on what type of protection you are facing.
Instructions
Step 1
Locking a phone for an operator means that the phone is locked for use in one or several networks, but no more. In this case, when you turn on the phone with a SIM card of another operator, a field pops up asking you to enter a password, without which it is impossible to turn on the phone. Most often, this type of blocking occurs abroad, so you may encounter it when purchasing a phone abroad. In this case, you need to contact the representative of the cellular company to obtain an unlock code, providing the IMEI number to verify your mobile.
Step 2
You may also encounter a security code lock that is requested when you turn on your phone. There are two options for resetting this code - using the factory reset code or using the firmware reset code. Keep in mind that the firmware reset code not only resets all settings, but also erases all your data in the cell phone memory. You can easily find them online, but your best bet is to go to https://www.sonyericsson.com/ and find support contacts. After that, contact the found contacts, providing the IMEI phone number, and request one of the above codes.
Step 3
To block a SIM card, a pin code is used that blocks its use, as well as a pack code, which is a fallback if the PIN code is lost. They are located on the package from the SIM card. In case of blocking after entering the PIN code incorrectly three times in a row, you can use the pack code for recovery. Otherwise, you will need to contact the representative of the cellular company with which you have a contract. Provide your passport details and request a replacement SIM card for a new one. In this case, all information on the SIM card will be lost, but you can keep your phone number.
