What is a Sim Network Unlock Pin?
A“Sim Network Unlock Pin (NUP)” or“Network Unlock Code (NUC)” will remove the carrier lock built into GSM mobile phones by services providers to restrict the use of these phones to specific countries and/or networks. These are usually referred to as "Network (NCK)" or "Service Provider (SPCK)" locks and can be removed using the corresponding unlock codes, which are unique to each phone depending on its IMEI.Typically, a locked handset will display a message if a restricted SIM is used, requesting the unlock code. On recent phone models running Android software, the phone will display a message saying “SIM network unlock PIN” or “Enter Network Lock Control Key” if network locked. Windows phones will display the message, “This SIM card can only be used on specific networks".Unlocking the phone is universally legal so there are more reliable services like https://www.unlockradar.com, that will unlock your cell phone so you can use it with other carriers.The unlock code is verified by the handset and is generated by the manufacturer, typically using an algorithm such as a one way hash or trapdoor function. Sometimes big telecom providers change the original factory unlock codes as an extra layer of security against unlocking services. For various big brands such as Samsung and Motorola there is no algorithm but just a random code generator where the unlock codes are programmed in the phone itself and then saved in a big database managed by the manufacturer. The unlock companies like Unlockradar have access to these databases and that is how they can deliver unlock codes to their customers.
What happens if you swap sim cards?
The answer by James M. Hill is quite thorough. So, only a few things added here.Think of each SIM as a separate account (whether on the same or different carriers) for use on the cellular network.After you remove one SIM (typically requires a power-off or battery removal), the phone stops using the network of the carrier who provided that SIM.Insert the next SIM followed by a power-up, and the phone registers on the network of the carrier who provided that SIM and receives service, assuming that the SIM is properly activated, of course.Essentially that simple, although there are some nuances.
How can I get the phone call recording and messages from a month ago?
Take a step ahead of time, how do your subconscious mind feel about this, what feelings does it portray to you? You should know you can have and make a positive live and relationship when you get all grudges out and set your mind free for real. which is very much abstract than living in the guilt or sadness of a particular aspect of your own life. Okay i’ll suggest Dark Sniffs who gets anything online, why feel disturbed in anyway?