iPhone 18 Pro Max includes a battery over 20 watt‑hours, which triggers extra shipping restrictions in many regions. To comply, a firmware limit keeps capacity below 20 Wh during manufacturing and transport and is removed on activation. If an activated device needs to be shipped for repair, trade‑in, return, or to another person, the Prepare to Ship feature in Settings will discharge the battery below 20 Wh and set a temporary charge limit so the phone remains under that threshold while in transit. The battery remains safe for normal travel; this process exists solely to meet shipping regulations.
To use Prepare to Ship, disconnect any charger, open Settings > General > Transfer or Reset iPhone > Prepare to Ship, and choose Repair/Trade‑in/Return or Other. Follow prompts to erase the device and remove Activation Lock if required; erasing is recommended for trade‑ins and returns. For repair/trade‑in/return the charge limit is capped at 80% for 14 days; for other shipments it can be undone anytime via Ready to Ship > Undo Shipping Preparation. Discharging can take minutes to a few hours and may warm the device; if the screen is unusable or steps fail, contact Apple or the recipient for guidance.
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