Should I put the device into airplane mode?¶

Not by default. Airplane mode is a device-changing isolation option whose actual effect and evidential cost vary by handset and configuration.

It may not isolate every route¶

Airplane mode usually changes cellular service and may change Wi-Fi or Bluetooth, but those connections can remain or be re-enabled. Accessories, secondary profiles and established services may provide other routes. Record signal, networks, Bluetooth, screen, applications and notifications before intervention.

Isolation has competing consequences¶

Reduced connectivity may limit remote wiping, new messages and synchronisation. The settings change can also create logs, interrupt sessions, alter apps or contribute to lock and data loss. Signal-blocking containers bring battery and heat risks of their own.

Assess the credible remote-change risk, unlocked state and available specialist support. Any isolation method should be authorised, proportionate and recorded with its observed result. SIM removal is a different change, not an equivalent shortcut.