~65% in the Global South. Point-Topic, the most reliable source, found 913M fixed lines at the end of Q3 2017. By now (April 2, 2018,) fixed lines are over 940M. I don't know any way to be as precise for wireless-only. For Q3 2017, I find about 1B regular data users without a home wired connection. I'm estimating ~500M wireless only "connections" to compare with the landline figures (Follow links or charts at end.) Update 1/10to reflect a higher estimate for Indonesia.
25% have English as a primary language, per the chart below. 75% do not. Chinese is 19%; Spanish is 8%; almost 25% speak languages outside the top 10. Google translation is almost but not quite good enough to bridge that.