Can I carry a sealed mobile phone box in my hand luggage?

score:3

There are two issues at play here: security before boarding and customs on arrival.

Security often requires electronics to be put on a tray, out of your bag. They will probably require the box to be opened so that the phone sits on the tray by itself, though this may vary based on the type of equipment they use and their local rules.
Customs regulations mean you need to declare (at least) goods purchased abroad that you are importing and will remain in the country, unless the total value of such goods is below the duty free allowance for such goods in that country. Depending on the value of the phone, it may be below or over that threshold. If you are over the threshold, you should declare it at customs and will usually need to pay taxes and duties on the value of the phone (don’t forget to keep the invoice so that have the appropriate value to tax on, otherwise they may “evaluate” it themselves and end up with a much higher figure.

If you are under the threshold they may still want to check. Again, an invoice will help.

If you are over the threshold and intend not to declare (which of course we won’t recommend here), any check will reveal a brand new phone still in its original packaging, you won’t be able to try to pretend that it’s your personal used phone.

jcaron 63479

Source: stackoverflow.com