#24: Forgetting to Put the Phone on Airplane Mode
Many travelers do not realize their phones can connect to expensive cellular networks at sea without warning. A few background app updates, incoming messages, or accidental data usage can quickly lead to shockingly high charges after the cruise ends, especially when the ship is far from shore.

Switching phones to airplane mode before the ship departs is one of the easiest ways to avoid surprise roaming fees. Travelers can still connect to onboard Wi-Fi if needed while keeping cellular data turned off. It’s a simple step that can prevent an unpleasant bill from following you home after vacation ends.
