Tell them where you’re going before you go.the ONLY issue is you need texts and emails from places like your credit card companies, who will be checking to see if the foreign charges are legit. if you do not respond, they may put a hold or even cancel your credit card in mid-vacation.
I said a kind of burner, because you can still use your same SIM, most people anyway. Now, if you’re worried about a foreign state or terrorist group tracking your SIM from the towers and you believe they may already know your SIM ID, then yeah you should use a new SIM. But that is an extreme edge case.
And you can forward emails to a burner account while you’re away, so you may accrue some emails on your burner while out, but they couldn’t look through historic emails.
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