Digital communications systems include technologies like 2G, 3G, and 4G cellular networks that allow us to use social media and wireless connections like Bluetooth. Popular methods of digital messaging include SMS, MMS, and messaging apps like WhatsApp, Facebook Messenger, and Skype, which allow sending messages and multimedia over WiFi without charges. VOIP technology provides another cost-effective way of calling and messaging over the internet using your IP address. 3G and 4G cellular networks are what provide the network connection on phones, with 4G offering faster speeds but not being as widely available as 3G yet.

1. Digital
Communications
Systems

2. What are they?
Things like 2G, 3G and 4G are part of digital
communications systems, we all use digital
communications, when we use social medias in our day to
day life, but we may not realize.
Bluetooth is a good example of something we all use, it is a
short range wireless connection, which many people use to
connect to speakers or printers.

3. Methods
 One popular method of messaging is SMS and MMS , SMS stands for
short messaging service and is mainly used to send texts with no
attachments, just words. MMS stands for multi media service, this is
when you send photos and audio.
 Most people now use messaging services such as: Whatsapp, Facebook
Messenger and Skype. These services use Wifi to send messages free
of charge, meaning you can send MMS with no extra charge, this is
known as instant messaging.

4. Methods
Another way people message and call without cost is by
using VOIP, which stands for Voice Over Internet Protocol,
this uses your IP to make high quality calls, these don’t cost
and VOIP to VOIP is the best connection you can get.
Web 2.0 made the internet more interactive to the user, it
meant that pages were able to e interacted with and people
could comment and upload videos/photos.

5. 3G/4G In Detail
3G and 4G us what your phone uses to get a network
connection, there is 3G available in most places around the
world, but where 4G is newer it isn't as widely available. 4G
is faster and better connection than 3G is.
3G and 4G works by connection from your phone to the
satellite for you to pick up the signal, we use this in day to
day life.