4G LTE is finally on iPhone. If you pre-ordered or planing to buy an iPhone 5 now that Apple decided to use LTE it’s important to know whether your carrier has LTE coverage around your area. If your carrier doesn’t offer/cover LTE in your area, then 4G LTE will be worthless on your iPhone 5. Thanks to LTE, we can also forget about shitty data speeds from carriers like Sprint; now we will have to worry if that carrier has LTE coverage.

To check if your iPhone 5 will receive LTE speeds, you’ll need to check your carrier coverage map. This can be done by going to the carrier’s website. In the US, AT&T, Sprint and Verizon will offer LTE for the iPhone 5 — some carriers speeds and coverage are than others.

If your’re an AT&T customer, 4G LTE coverage can be found at att.com/network. AT&T claims to cover over 74 million people in 63 cities with its LTE network.

Sprint customers will have a hard time finding LTE coverage. Since Sprint chose WiMax instead of LTE, it came late to the LTE game and is falling behind in LTE deployment compared to AT&T and Verizon. To find out if Sprint currently (or will) offer LTE in your city, check sprint.com/lte. Also expect your Sprint 4G LTE to be slower than Verizon or AT&T, which is still a good deal considering that you have unlimited data with them. Sprint will also have 4G LTE  in more than 100 cities by the end of the year.

And finally, Verizon. As we know, Verizon was the first carrier to offer LTE – so it’s expected to have the most LTE coverage. Verizon LTE is currently available in  371 cities, covering nearly 75% of the U.S. population. This makes it likely that your iPhone 5 will have 4G LTE on September 21. Verizon LTE coverage map can be seen at network4g.verizonwireless.com.

You can also check CNNMoney interactive coverage map which shows the 3 carriers coverage; AT&T with a few dots; Sprint with a couple of dots; and Verizon with many dots.