According to Open Signal, Nigeria is the country with the highest penetration of dual SIM devices in the world. A study carried out by a crowdsourced cell phone signal startup put the number of dual sim phone users at 66 percent prevalence. Meaning; for every five mobile phones in Nigeria, three will most likely turn out to be Dual SIM phone.
This is a significant result, not only for understanding consumer behaviour, but because it impacts the calculations of how many people in the world have mobile devices and therefore the figures on mobile penetration in individual countries.
