You got a few years to wait for that 4g network?
4g? Really depends.
For true 4g, lte-a might never have it. Wimax-e at 2.5ghz stands a chance, though slight one.
Why may you ask?
Well that is easy.
For "true" 4g speeds you need a min of 100mbs. 100mbs is about 10 tens quicker then the maximal radiation produced by any mobile phone is allowed.
Now radio transmission is pretty mature, so the chances of a major break through reducing the amount of radiation down to fcc guide lines will never happen, not in the foreseeable 5-10 years.
It does not mean it can not happen, for cars, buildings, or hotspots, but for phones, no. Just not really that possible using current technology.
Ignoring that. Because technology always proves everyone wrong.
A 30mbs connection will suck down a laptops battery from full charge to zero in about 32 mins, done it myself.
So in order to get a 30mbs connection to a laptop you need a huge transformation in battery technology. Once again, maybe in 5-10 years, but not in the foreseeable future.
Ignoring that. Because once again, it is technology.
lte has the brilliant use of of the 800mhz spectrum. Really good for long distances. But really sucks for high density build outs.
I am going to use some geek here, pardon me.
When your "3g" phone makes a data transition, it uses frequency. This frequency is measured in hertz. For example the 800mhz frequency has 20mhz for up and 20 mhz for down with lte. (trying to keep it simple)
Your phone can use as much as 20mhz, but if it does, there would be no more for anyone else to use, (ignoring the complex nature of signal modulation).
So if let say that a 20mhz radio uses all the bandwidth from one tower, for one person, then you would have to half that to 10mhz per tower for 2 people, 5mhz for 4 people, 1.4mhz for 8 people.
So 8 people using 1.4mhz would max out the towers,(with signal modulation that would be more like a factor of 10, but trying to keep it simple).
Now with 20mhz, speeds of 40-50mbps is possible. But with only 10mhz speeds of 20-25 are possible, with 5 mhz 10mpbs, 1.5 5mbps, and so one.
So to get around this, the brilliant people designing radios add more radios. Just brilliant. It is called MIMO.
MIMO exist for both lte and wimax. And here is how it works. A mimo has more then one atenna, with the evo it is 4 antennas. 2 going in, 2 going out (going to ignore the fact that one of the out radios is disabled by firmware).
The 2 antennas can pull data from two different towers. For example. Tower 1 has 1.4mhz of bandwidth available offering 5.4mbps of speed. Tower 2 has a 5mhz of bandwidth open, offering 10 mbps of speed, the connection now has 12mbps of speed, (evo is capped at 10mhz per radio and 10mbps).
Mimo makes it possible for 1, 2, 3, 4, + towers to feed data to one radio. Which means really fast connection.
But this is another problem with lte. You see at 2.5ghz, you can really stack the towers really close together, because the wave lengths are soo small. But at 800mhz, the signal wave is really long, which means the closer you get them together, the more interference you will have. Which will slow down your connection.
Now most wimax station can be placed with in feet of each other, lte have to keep a distance of about 4 miles, with out directing the antenna and about a 1mile with.
So mimo has very limited ability with lte at 800mhz.
This is just a function of the frequency. Now this will not stop them from using the 1900mhz to fill in the gaps, but connections will always be slower then wimax. Just because of tower density.
The last problem with lte is that it has a very limited bandwidth. All totaled you get about 80mhz of bandwidth, once you remove the ability to make calls, texts, and 3g service. All that will have to go to lte-a.
Wimax has about 160mhz of bandwidth, with out touching voice or texting.
It is in the position to pick up more.
So long story short, 4g will not come to mobiles for at least 5-10 years, if at all. 4g as it is being used is a marketing term. Nothing more.
As the the op, all phones (non apple) become obsolete in a few months.
Apple releases every year, htc releases every 2-3 months.
We already know the epic is coming and so is aava. The point of worrying about if your phone is going to be replaced in 1 year is pointless.
Only if you are an apple fan would you care. Then you are stuck with 1year old tech, regardless of what you do.
Besides that the article is more or less true. HTC hero was a great phone, made it 6 months before the EVO. Sammy moment, had its moment, and is now replaced by galaxy.
But iphone 4 will be a iphone 4 for the next year. Regardless of how good, bad, or wanted (dont want) it will be.