noun, noun or participle which takes 'suru'
SIM lock; carrier lock; network lock
Refers to a restriction that ties a mobile device to a specific carrier's SIM card. Commonly used in discussions about unlocking phones.
このスマホはSIMロックがかかっているので、他のキャリアでは使えない。
This smartphone is SIM-locked, so it can't be used with other carriers.
SIMロックを解除する
To unlock the SIM lock, you need to apply to the carrier.