SIM cards contain a computer chip that can do some simple mathematics and store some data.
SIM cards link accounts to handsets. They keep communications private. They store messages. Although small and simple, they are a big part of modern mobile phone systems.
For some, the mobile phone revolution has produced new work opportunities.
The extent to which mobile phones can support and sustain real improvement in young lives is depressingly finite unless significant interventions occur.
The act of spending money to impress others is a signal of resources to potential mates. Having resources is a valued trait by females.
Dating apps have changed the way people present themselves. Visual cues and short 100 word bios are the new currency of dating.
A group of Maasai men look at the mobile phone belonging to one of them.
What do traditional Maasai people use mobile phones for?
WeChat has transformed from a social media to a payment platform (among other things) and had success in China. Could Australia be next?
While Apple Pay may have won the battle against some of Australia’s banks, it may lose the war against the providers of digital wallets, such as Tencent and Alibaba.
Ethiopian farmers exchanging phone numbers with a research assistant.
Mobile phones are often touted as technology that can help bring economic benefits to the poor. But the benefits to those living in rural and remote areas without other infrastructure are limited.
Mobile phones can be used as human tracking devices.
You can learn a lot about the movement of people and animals if you tap into the tracking data from many of today's mobile phones.
The new/old Nokia 3310 revealed at this month’s Mobile World Congress in Barcelona, Spain.
Nokia's decision to revise an old mobile phone classic should appeal to a movement of people who prefer to play with the older technologies.
Can’t beat a classic.
Rumours have emerged that Nokia will relaunch a version of one of the best-selling phones of all time.
When calling these people, you want to be able to get through.
Fairfax County, Virginia
'Denial of service' cyberattacks are increasingly used to shut down websites. New research reveals that 911 call centers are vulnerable to the threat as well.
Pocket your phone without worry.
Phone image via www.shutterstock.com.
Did your holiday gift list include radiation-shielding undies to protect your privates from cellphone radio waves? A radiation expert explains they're unnecessary – your phone won't affect your fertility.
By the end 2015, nearly 560 million people in Africa had some kind of mobile phone package.
The African continent appears to have the most remarkable potential for growth and transformation, but can it be sustainable?
Matatu or minibuses in a downtown Nairobi park. Good information about transport is critical for citizens in any place.
Involving the public in data collection - through crowd sourcing - to produce critical public services such as maps and transit apps helps build new conversations on how the system can be improved.
Mobile phones have many benefits. But they can also interrupt classes and distract pupils.
More pupils in Ghana, Malawi and South Africa are taking smartphones to school. These can be useful learning tools – or terrible distractions.
Don’t worry, we’ve seen no rise in rates of brain cancer since we started using mobile phones.
Earlier this year, Australia saw a whirlwind tour from the electromagnetic radiation from mobile phones alarmist Devra Davis. Davis is an international champion of the belief that populations bathed in…
Prepaid cellphones are just one of many technological tools used by criminals and terrorists.
flip phone image via shutterstock.com
Throwaway phones are just one piece of the ever-widening technological arsenal of extremists and terror groups of all kinds.
New research shows young men are more likely to make friends but women tend to have the strongest friendships.
Spot the mobile phone mast.
What can be done about the lack of connectivity in remote areas?
How you let young children use a tablet device can influence their behaviour in later years.
If you use a tablet device to keep a child quiet at the dining table or other event then you could be limiting their social skills. That could have an impact on the way they behave later in life.
Low-income teens are unable to participate in social media conversations of their wealthier peers.
Phone image via www.shutterstock.com
With low-income kids unable to participate in the social media conversations of their wealthier peers, a new form of digital inequity is emerging.