How much weight is allowed to be taken with you on airlines?

I know it around 20 Kilograms but i am not sure. I want different views so i can exactly know the average weight a person can taken with him/her.

can Nokia 2626 bought in pakistan(Sim set) works in USA?

I am not sure about which frequencies are used for GSM sets in USA. Whether they using GSM 800 or 1800. I have a cell phone whose charger takes 200 volts. so that i know that i wil need a 110V...

how much weight is allowed for you to be taken on airline?

how much weight is allowed by your ticket/airline to be taken while you are travelling international?

what should a student take when move to another country for studies in winter?

i am going for studies to usa but i dont know the whole list of things i should take. things which are costly in usa and can be taken along. what could be, it is a hard answer but do you know any...

Does your eyes burn when you are sick?

My eyes burning now, Do your eyes burn too when you are sick or havin temperature?