What you can expect from 4G LTE coverage

4G LTE smartphones offer extremely fast downloads, but quality of 4G LTE connection depends on your smartphone, carrier, and location.

Diane Bondareff/AP Images for Windows Phone/File
To mark the launch of the first 4G LTE Windows Phones in April, Free-Time Machines were set up at Bryant Park in New York and across the country to show how smartphones operate faster with the speedier network. Since the arrival of more 4G LTE smartphones, coverage has definitely improved, although it still depends on factors like your carrier and location.

As more and more 4G LTE smartphones hit the market (most recently the Apple iPhone 5), we have begun to see marked improvements in coverage for the fourth generation (aka 4G) of mobile technology and data networks. With 4G LTE, users enjoy extremely fast download speeds and therefore smoother streaming video, faster-loading websites, and (eventually) potentially better call quality. As it stands right now though, the quality of a 4G connection depends on the smartphone, carrier, and location. Given these factors, it's important to look at exactly what 4G can do for you.

How Fast Is 4G?

Although 4G networks have been rolling out across the country for a couple of years now, the issue has been slightly confusing: various technologies have been tagged with the 4G label. LTE, or Long Term Evolution, has emerged as the frontrunner, and it looks set to become the first worldwide mobile phone standard.

In theory, LTE can support download speeds of up to 100Mbps and upload speeds of up to 50Mbps. In practice users will never see these speeds, but in general 4G LTE is faster than 3G technologies. Depending on connection strength, 4G could be 10 times faster than 3G, it could be twice as fast, or (just to confuse matters) it could even be slower than advanced 3G technologies like HSPA+. In general, though, 4G LTE should offer speeds of 5Mbps to 12Mbps.

Large cities tend to have better coverage, and customers there will likely enjoy speeds of around 20Mbps; a majority of the nation however is looking at speeds a lot slower than that. A PC Mag test of 30 major U.S. cities found that Verizon offered the best overall coverage, with average download speeds across the country of 8.89Mbps. Interestingly AT&T's 4G LTE offers the highest average speed at 13.71Mbps, but its availability is much more limited.

To put this into perspective, streaming a hi-def 1080p video requires a 5Mbps to 9Mbps download speed. But customers who want to create a hotspot with their phones (so that other devices like a laptop or tablet can use the network connection) will definitely want a faster connection. For most people an average speed between 5 Mbps and 12 Mbps will be enough. It's worth remembering that average speeds are liable to go down as demand for bandwidth goes up and the network has to serve more devices.

Where Can I Get 4G LTE?

It's no surprise that 4G LTE has been rolling out to cities first, but coverage is extremely variable: only Verizon, AT&T, and Sprint actually offer 4G LTE service at the moment. T-Mobile's network is HSPA+ and its current average speeds are quite high, though the carrier will be rolling out LTE soon enough. Verizon currently offers the most 4G LTE coverage, and it claims to cover 75% of the U.S. population.

To compare coverage in cities, check out CNET's 4G coverage comparison and 4G LTE coverage maps for Verizon, AT&T, and Sprint at CNN. The bottom line is, if you don't live in or near one of these cities right now, then 4G LTE is going to be patchy or completely unavailable. All of the major carriers are committed to increasing 4G coverage, and it should eventually cover as wide an area as 3G, but that could take up to three years.

Watch Data Usage with 4G

Unfortunately, as 4G LTE rolls out nationwide and consumers finally get a big, speedy pipeline to endless web content, carriers are simultaneously killing off unlimited data plans. A few years back, a typical mobile plan would include a set number of voice minutes and texts, and unlimited data. That trend is now being reversed; consumers can have all the texts and minutes they want now, but carriers are charging for data by the gigabyte.

New plans from AT&T and Verizon offer shared tiers of data that multiple devices can draw from. The trouble is, if any one of those devices goes over the monthly limit, carriers can bill for overages, at nearly $10/GB! For perspective on how much data an average user consumes, consider this: streaming an hour of HD video — made all the more possible with 4G — could use a full 2GB of data. If you're not careful about how and when you use your 4G LTE, you could find yourself with a much bigger bill at the end of the month. Thankfully both Sprint and T-Mobile continue to offer unlimited data plans — for now, at least.

Is It Worth Upgrading to 4G?

Even for those smartphone users who don't live in a well-covered area, it's worth upgrading to a 4G LTE device. All 4G devices on the market can also use 3G, since they fall back on 3G networks when there's no 4G service available. Plus, the service plans for 4G phone are no different than 3G, meaning there are no additional service expenses when upgrading. Moreover, 4G phones themselves don't have to cost a fortune. In the past five months, we've listed 22 4G-enabled phones that cost a buck or less, when purchased with a 2-year contract. And you can even get the iPhone 5 for free (after a trade-in, that is).

When it comes to choosing a carrier, knowing the kind of coverage available is key. If you're lucky enough to live in an area covered by all the major carriers, then it's a choice between the high speed and high cost of AT&T and Verizon, versus the relatively slow speed and potentially lower costs of T-Mobile and Sprint (thanks to their aforementioned unlimited data plans).

Simon Hill is a contributor to dealnews.com, a website devoted to finding the best deals on consumer goods. The site pledges to list the best deal, whether or not it's from an advertiser, although it does work with advertisers to craft deals for readers. This feature first appeared in dealnews.com.

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