If you want to keep your phone secure, enable a long passcode, turn on full device encryption, and turn it off. If you are a US citizen, you can't be turned away at the border or forced to unlock the device. If you're not a US citizen or don't want to be harrassed by customs, bring a burner phone.
Tools like Cellebrite can and do take advantage of security vulnerabilities. Turning off pair locking lulls users into a false sense of security and is therefore harmful. Further, only restricting CBP searches to "manual" searches isn't enough and does plenty of damage to your privacy.
Tools like Cellebrite can and do take advantage of security vulnerabilities. Turning off pair locking lulls users into a false sense of security and is therefore harmful. Further, only restricting CBP searches to "manual" searches isn't enough and does plenty of damage to your privacy.