In poor country's only middle class and wealthy people have access to computers mostly. So... not really.
yes that is really a big problem for poor countries that most of the people in poor countries have no access to computer and internet, therefore bitcoin may not be so much helpful for poor countries.
I think it is impossible right now that there is no internet in some countries maybe some island those can not use bitcoin since they have no internet and to far in some isp or internet networks.. or even signals for your phone internet.,