Yes, of course tampons are allowed on airplanes - why wouldn't they be?
Tampons are a personal hygiene product, just like sanitary pads or menstrual cups they are an essential part of a menstruating persons personal hygiene - if a woman was menstruating they wouldn't be able to stop her from flying, thus menstrual products have to be allowed on a plane.
Tampons would either be worn or kept in your bag, and in your bag they will just go through the screening like everything else in your bag, no reason for these to be an issue at all.
Phones aren't allowed on airplanes, because they may influence cockpit controls.
Yes It is allowed
You can bring alcohol nipples on airplanes
No.
no
Yes, they are.
as long as you have it in a suitcase and not a carry on
Not to be used on the airplane, no.
Yes but maximum 100ml .
No
They can, and it's a smart idea to wear tampons AND pads.
Yes, cellphones are allowed on passenger trains, unlike airplanes.