Per the help centre:
Super User is for computer enthusiasts and power users. If you have a
question about …
- computer hardware,
- computer software, or
- personal and home computer networking
Mobile phone networks may be built on computers exchanging data using various wireless (microwave) and wired links, but the actual technology used to communicate with a mobile phone (GSM/CDMA) is not relevant to personal and home computer networking, or specific computer hardware.
Mobile phone dongles are more common, and we would allow discussion of them insofar as they are used to connect to the internet so discussion of 3G/4G benefits might be on-topic but without the question being made very specific then it could very easily be closed as simply being too broad as random has mentioned. It could easily be too specific at the same time.
The reasons why I would want this clarified would be:
- Almost every country uses different frequency bands for 3G and 4G transmissions. Indeed a lot of different providers use different bands for the same type of signal.
- Different frequency signals propagate differently through (and around) various materials, this means that you can get vastly different performance between frequency bands depending on whether you are in an "urban canyon" or out in the middle of a field.
- How far you are from the base station can mean that you get a very poor 4G signal but an excellent 3G signal, or an obstruction in the way could mean you get an excellent 4G signal but awful 3G signal.
- There are multiple 3G and 4G technologies, and it is highly dependant on what both your device and provider supports as to how good a signal you will get.
Why I say it is too specific? There is only one good answer to your question:
*(Depending on where you are, who your provider is and what device you are using)
WiFi can easily be nailed down, we have only two frequency bands and range is not as much of an issue as it is designed to be used within a home.