The general term in terms of telecommunication networks and the technology itself is 4G. Which is 4th Generation Data Transmission (more or less).
Now people don't say 4.5G for the tech that comes after 4G, even though those technologies are advanced versions of 4G. So they just tend to say 4G. 4.5G can refer to 4G-LTE and/or LTE-A.
LTE means Long Term Evolution. 4G (standard) provides theoretical speeds up to 75Mbps, 4G-LTE or usually just said LTE gives speeds x2 that up to 150Mbps (Theoretical).
Then follows LTE-A. It's the same 4G network but an advanced version of the LTE upgrade the 4G had. Hence the name LTE-(A)dvanced. It also gives a theoretical speed increase x2 of LTE up to 300Mbps. Many new phones have this technology. However next to the carrier name only LTE might show up. In South Asian Models it always only says 4G since people there just used to saying 4G no matter LTE or LTE-A.
Pretty much most major telecoms in the developed world support 4G and LTE. LTE-A came out around 2 years ago out of testing and very few carriers use it. Rogers in Canada uses it, SK Telecom in South Korea and I guess AT&T as well. The reason they don't say it's 5G is because the technology of 4G is just being revised for efficiency which results in high data transfer speed as well. So it's technically still 4G. But the manufacturers had to state specifically if the phone is 4G compatible and LTE or just 4G as the inner modules which support the tech are different. LTE-A can be either be advertised or simply just written in Phone Specs as GSMArena as Cat6 version of LTE. So it also makes sense to say 4.5G for easier understanding.
Currently 5G is in development as well which has insane speeds. All different generations had huge gaps in speed as well and not just x2 linear curve but an exponential. 5G also uses a different tech.
Now people don't say 4.5G for the tech that comes after 4G, even though those technologies are advanced versions of 4G. So they just tend to say 4G. 4.5G can refer to 4G-LTE and/or LTE-A.
LTE means Long Term Evolution. 4G (standard) provides theoretical speeds up to 75Mbps, 4G-LTE or usually just said LTE gives speeds x2 that up to 150Mbps (Theoretical).
Then follows LTE-A. It's the same 4G network but an advanced version of the LTE upgrade the 4G had. Hence the name LTE-(A)dvanced. It also gives a theoretical speed increase x2 of LTE up to 300Mbps. Many new phones have this technology. However next to the carrier name only LTE might show up. In South Asian Models it always only says 4G since people there just used to saying 4G no matter LTE or LTE-A.
Pretty much most major telecoms in the developed world support 4G and LTE. LTE-A came out around 2 years ago out of testing and very few carriers use it. Rogers in Canada uses it, SK Telecom in South Korea and I guess AT&T as well. The reason they don't say it's 5G is because the technology of 4G is just being revised for efficiency which results in high data transfer speed as well. So it's technically still 4G. But the manufacturers had to state specifically if the phone is 4G compatible and LTE or just 4G as the inner modules which support the tech are different. LTE-A can be either be advertised or simply just written in Phone Specs as GSMArena as Cat6 version of LTE. So it also makes sense to say 4.5G for easier understanding.
Currently 5G is in development as well which has insane speeds. All different generations had huge gaps in speed as well and not just x2 linear curve but an exponential. 5G also uses a different tech.
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