I think the story is sticking to facts and how things were, if you're looking close at the phone issue.
Iridium filed for chapter 11 during the fall of 1999. The business got relaunched, but it is a very niche thing. There are a few reasons why there's no big number of subscribers using sat phones from them, or Inmarsat et al. If I ran a safari operation back then, it might have been tempting to spring for a sat phone. However, even for wealthy private citizens, these technologies weren't even on the horizon unless you sailed across oceans, or climbed Himalaya. There was no gear hype involved. Sat phones were and are relegated to really remote places like Antarctica, the Artic and unpopulated areas of the world.
These days most of Africa, and most other populated places in the world are serviced by 3G networks with GSM 2G networks as a fall-back. Even 4G LTE Advanced services are being introduced in what might be considered typical 3rd-world countries. Huge parts of Asia, Africa and South America have totally leapfrogged wired phone service.
GSM came to South Africa in 1994, so by the early 2000's it was pretty much in use all over the continent. It's a surprising success story in the world of technology. Since long, you've been able to use a GSM phone all over the world. With later networking standards harmonization, plus the advent of cross-network texting the US which was lagging the rest of the mobile/cell world back then - as well as using weird proprietary cell phone standards, these devices are now truly global. Your average 3G/4G WCDMA/LTE smartphone won't care if you're in Stockholm, Addis Abeba, Brisbane, Osaka, Busan, Chengdu, Vladivistok, Munich, Oahu, Cape Town, Dubai or even St Louis