Communication: Means, Importance, Problems and Solutions – Transport and Communication in the World (Senior 6 Geography) | Ganzaa

Transport and Communication in the World

Lessons

Senior 6 · Geography

Transport and Communication in the World

4 lessons

Lesson 4 of 4

Communication: Means, Importance, Problems and Solutions

25 min

A phone in most homes, the internet in few hands

Rwanda's 2022 census found that 78% of private households owned a mobile phone and 81% a radio. Yet only 14% of people aged 10 and over had used the internet in the previous twelve months (NISR, Fifth Population and Housing Census, 2022). The phone reached almost everyone; the internet did not yet. Figure 1 shows that the same gap exists across the region.

Figure 1: Share of people using the internet, world and sub-Saharan Africa. Data: World Bank.

In 2025 there were about 111 mobile subscriptions for every 100 people in the world and 90 per 100 in sub-Saharan Africa, but only 1.1 fixed broadband subscriptions per 100 people in sub-Saharan Africa against 20 worldwide (World Bank). Africa has largely skipped the fixed telephone line and gone straight to the mobile phone.

Definition

Communication: the sending and receiving of information, ideas and messages between people and places.

Telecommunication: communication over a distance by electronic means: telephone, radio, television, the internet.

Mass media: means that reach large audiences at once: newspapers, radio, television and websites.

Fibre-optic cable: a cable of thin glass strands that carry data as pulses of light; undersea fibre-optic cables carry most of the internet traffic between continents.

Digital divide: the gap between people, places or groups who have access to modern information technology and those who do not.

Bandwidth: the amount of data a connection can carry each second, measured in bits per second (for example megabits per second, Mbit s⁻¹).

Means of communication

Means	Advantages	Disadvantages
Face to face, meetings, messengers, town criers	Personal, needs no equipment; trusted in communities	Slow over distance; reaches few people
Post and courier	Carries documents and parcels; a written record	Slow; costly over long distances; declining use
Newspapers and magazines	Detailed news; can be kept and re-read	Need literacy; slow to reach rural areas; costly
Radio	Cheap receivers, runs on batteries; reaches remote and non-literate listeners; local languages	One-way; no pictures; can spread rumours or propaganda
Television	Sound and pictures; powerful for education and news	Sets and electricity are costly; few rural owners
Mobile phone and SMS	Personal and two-way; works without fixed lines; carries mobile money, alerts and market prices	Needs network coverage and charging; airtime costs; scams
Internet (email, websites, social media, video calls)	Instant, global, two-way, multimedia; e-commerce, e-learning, e-government	Needs devices, data, skills and power; cybercrime; misinformation
Satellites	Cover remote areas, oceans and disasters; broadcast TV; weather and navigation	Very costly to launch; signal delay; limited capacity

Why communication matters

Economic: traders compare prices, firms reach customers, and mobile money lets people pay, save and send money without a bank branch.
Government services: Rwanda's Irembo portal lets citizens apply online for documents and services instead of travelling to offices.
Education: radio lessons, online courses and digital textbooks reach learners far from schools.
Health and safety: health workers report outbreaks by phone; warnings of floods and storms reach people in time.
Social and political: families stay in touch across distance; citizens follow news and take part in public debate.
Transport and trade: tracking cargo, booking tickets and clearing goods at borders electronically.

Problems of communication

The digital divide between towns and villages, rich and poor, men and women, young and old.
Cost of smartphones, computers and data, compared with low incomes.
No electricity to charge devices or power masts in remote areas (Unit 10).
Poor coverage in mountainous and thinly settled areas, where masts and cables cost most per user.
Low literacy and digital skills, and little content in local languages such as Kinyarwanda.
Cybercrime and fraud, including mobile-money scams and stolen personal data.
Misinformation and hate speech that spread quickly on social media.
Fragile links: landlocked countries reach the undersea cables through neighbours, and in 2024 cable breaks off West Africa, in the Red Sea and off East Africa slowed the internet in many African countries.

Solutions

Extend 4G and fibre-optic networks and use satellites for the most remote areas; build several cable routes so one break does not cut a country off.
Lower the cost of devices and data through competition, tax policy and payment by instalments.
Bring power to villages with the grid, mini-grids and solar kits.
Teach digital skills in schools and communities; provide public access centres.
Create content and services in local languages.
Pass and enforce laws on cybercrime and personal data (Rwanda adopted a law on the protection of personal data and privacy in 2021); teach people to check sources before sharing.

Worked example 1: is the digital divide closing?

Problem. Using Figure 1, compare the growth of internet use in the world and in sub-Saharan Africa between 2005 and 2025, both as a change in percentage points and as a multiple. Is the gap closing?

Solution.

\text{World: } 73.6 - 15.6 = 58.0 \text{ points}; \quad \frac{73.6}{15.6} \approx 4.7 \text{ times}

\text{Sub-Saharan Africa: } 35.7 - 2.0 = 33.7 \text{ points}; \quad \frac{35.7}{2.0} \approx 17.9 \text{ times}

\text{Gap: } 15.6 - 2.0 = 13.6 \text{ points in 2005}; \quad 73.6 - 35.7 = 37.9 \text{ points in 2025}

Interpretation: in relative terms Africa grew much faster (almost 18 times against under 5), but the absolute gap in percentage points nearly tripled. Whether the divide is "closing" depends on which measure you use, which is why a good answer quotes both.

Worked example 2: why bandwidth matters

Problem. A teacher wants to download a 500 MB video lesson. How long does it take on a connection of 2 Mbit s⁻¹, and on one of 50 Mbit s⁻¹? (1 byte = 8 bits.)

Solution. Convert the file size to megabits: $500 \times 8 = 4\,000$ Mbit.

\frac{4\,000}{2} = 2\,000\ \text{s} \approx 33\ \text{minutes} \qquad \frac{4\,000}{50} = 80\ \text{s}

A slow connection makes video lessons, telemedicine and online business impractical. This is why fibre and 4G coverage, not just phone ownership, decide who benefits from the digital economy.

Warning

Common mistake. Confusing transport with communication. Transport moves people and goods; communication moves information. They are linked (phones track lorries, and roads carry newspapers), but answer the question that is asked.

Tip

Exam technique. For any communication question, think access, cost, skills, content, safety: who has the device and the signal, who can afford the data, who knows how to use it, whether there is useful content in their language, and whether it is safe. Each is both a problem and a place for a solution.

VISION: "How The Internet Travels Across Oceans". Watch for how fibre-optic cables are laid on the sea floor, what happens when they are damaged, and why most traffic between continents goes by cable rather than by satellite.

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Practice

Distinguish between communication and telecommunication.
Give two advantages of radio over television for rural communities.
Explain three ways in which mobile phones support economic development.
What is the digital divide? Give two examples.
How long does it take to download a 1.5 GB file (1 GB = 1 000 MB) at 10 Mbit s⁻¹?
Suggest why fixed broadband is much less common than mobile phones in sub-Saharan Africa.
"Improving communication is more important than improving transport for Rwanda's development." Discuss.

Show answersHide answers

Communication is any sending and receiving of information; telecommunication is communication over a distance by electronic means such as telephone, radio and the internet.
Receivers are cheap and run on batteries without mains electricity; broadcasts reach people who cannot read, in local languages.
For example: traders check prices and find buyers; mobile money makes payments and savings safe and cheap; firms and farmers receive orders, weather alerts and advice.
The gap between those with access to modern information technology and those without: for example urban against rural households, men against women, rich against poor, sub-Saharan Africa against the world average.
1.5 GB = 1 500 MB = 12 000 Mbit; 12 000 ÷ 10 = 1 200 s = 20 minutes.
Fixed lines need cables to every building, which is costly where people are poor and scattered and where homes may lack electricity; mobile networks need only masts, and phones are cheap and portable.
Communication is cheaper to extend, helps services (e-government, mobile money, e-learning) and suits a hilly, landlocked country. But goods, people and food still need transport, and a phone cannot carry cement or coffee to the coast. A good judgement is that the two are complementary: communication makes transport more efficient (tracking, electronic border clearance), and both are needed.

Summary

Means of communication range from meetings and radio to mobile phones, the internet and satellites, each with advantages and disadvantages.
Communication supports trade, services, education, health, safety and democracy.
In 2025, 73.6% of the world's people used the internet but only 35.7% in sub-Saharan Africa (World Bank); in Rwanda in 2022, 78% of households had a mobile phone but 14% of people aged 10 and over used the internet (NISR).
Problems of access, cost, power, skills, language, cybercrime, misinformation and fragile cables need matching solutions.

1A phone in most homes, the internet in few hands

2Means of communication

3Why communication matters

4Problems of communication

5Solutions

A phone in most homes, the internet in few hands

Means of communication

Why communication matters

Problems of communication

Solutions