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You should lock your SIM card before someone else does

Protect yourself against SIM swapping and more security threats by setting up a SIM PIN right now.

First look: Here's how Android's cool automatic SIM lock protection works

We previously uncovered evidence of an automatic SIM lock protection feature coming to Android, and we've now got a first look at the option.
No Jitter

The Apple SIM: Quietly Taking On Network Lock-In

The programmable Apple SIM, today for the new iPad Air 2, gives users the freedom to move from one wireless carrier to another -- in theory, at least. Love Apple or hate it, you can't deny the company ...
Android Authority

Ugh, Android Q could give carriers more powerful ways to SIM lock phones

New Android Q code suggests the upcoming OS version will give carriers more control over SIM-locking phones. Carriers could, hypothetically, lock out the second SIM tray in a dual-SIM phone if the ...
PC Magazine

SIM lock

(Subscriber Identity Module lock) A function in GSM cellphones that restricts the phone's use to a particular cellular carrier identified by a SIM card. SIM locks are used to ensure subscribers finish ...
The Droid Guy

SIM Network Unlock PIN Not Working? 3 Ways to Fix It

Have you ever gotten a new phone only to find out it’s locked to a specific carrier? This often happens when you purchase a subsidized phone from a carrier. The carrier locks the phone so you can’t ...