Google Android 17 is brewing an automatic SIM card unlocking feature, saying goodbye to entering two passwords after reboot.

IT Home February 28 news: On February 28, tech media Android Authority published a blog post, saying that in the Android 17 Beta2 update, Google is testing a new feature called “Automatic SIM lock protection” to address the pain point that users have to manually enter the SIM PIN code every time they restart their phone.

IT Home, citing the blog post, explains that in addition to common phone screen locks, the SIM PIN code is another important line of defense for protecting personal account security. After the phone boots, if the SIM card is locked, the correct PIN code must be entered in order to make calls or receive text messages.

This mechanism can effectively prevent criminals from stealing a phone, removing the SIM card, inserting it into another device, and intercepting two-factor authentication (2FA) verification codes. However, because users have to continuously enter both the screen lock and SIM lock passwords every time they restart the phone, this cumbersome experience causes most users to give up on this security protection altogether.

In the Android 17 Beta2 version recently pushed to Pixel testers, the media dug into the code and found multiple new strings related to “Automatic SIM lock protection.”

Automatic SIM lock protectionProtect SIM cardEnter the SIM card current PINEnter current SIM PINAutomatic PIN managementProtect SIM card from theftAndroid-managed PINShow Android-managed PINEnrollment failedEnrollment succeededFailed getting PINValue of the Android-managed PIN:Lockscreen must be set up to turn on SIM protectionSIM PIN manually managedSIM PIN managed by Android

The code shows that the system will add an option for “Android-managed PIN code,” allowing users to hand over the SIM card’s protection permissions to the operating system for unified management.

Based on the logic in the exposed code, this new feature’s working principle is quite clever. Users only need to pre-enter the SIM PIN code in the Android system; then after each device restart, the system will automatically send that PIN code to the SIM card in the background to complete unlocking.

Of course, the prerequisite for enabling this feature is that the phone must have a secure lock screen password set. That way, even if an attacker gets the phone, since they cannot unlock the screen lock, the system will not trigger SIM card unlocking; and if they remove the SIM card and put it into another device, the new device likewise cannot obtain the PIN code saved in the original phone’s system.

This SIM PIN management mechanism unified by Android retains all the security features of the SIM PIN code while completely eliminating the hassle of manual entry. However, it should be noted that users still need to properly record the management PIN code generated by the system, so it can be used when the phone is damaged and a device replacement is needed.