Skip to main content

Will my phone work in USA?

What if you are travelling to a foreign country and you need to know if your phone will work there? The answer is simple. There are two things to check:
1. GSM frequencies for making telephone calls  (some phones use CDMA,these are not dealt with here)
2. Data service frequencies for accessing the Internet.

There are two GSM frequency groups:
1. 900 and 1800 Mega Hertz (MHz)
2. 850 and 1900MHz.

Most of the world is in the first category except USA. See the map.

The next question is: Now that I have found that USA uses 850 and 1900MHz for making telephone calls, can my phone use these frequencies?

As an example, take the LG Optimus L3 E400. What are the GSM frequencies of this phone? You can get these details from the website. If you search for LG E400, you will get the following page.

For this phone, the key frequencies are:
2G Network GSM 850 / 900 / 1800 / 1900
3G Network HSDPA 900 / 2100

This data says that your phone can use both the 850/1900 and 900/1800 bands for GSM and 2G Internet (EDGE)

Therefore, LG E400 will work in the USA for phone calls and 2G Internet.

What about 3G and 4G?

The phone has 3G capability on 900 and 2100 MHz but no 4G capability. In the USA, 3G is offered on 850/1900 and 1700/2100 bands. As long at the service provider uses 2100MHz for 3G services, you will be able to get 3G services also.


  1. Nice. I never thought there was such a thing. Thanks now I know


Post a Comment

Popular posts from this blog

How to Install RIOT Plugin for GIMP

How to Install RIOT Plugin for GIMP:: Since this article was first written a stand-alone version of RIOT has been made available Download the plugin from the download link titled "RIOT as plug-in for other applications"   Launch the Riot-plugin.exe file by double clicking.The installer installs all the files including Riot.exe, Riot.dll, and FreeImage.dll in the location where you installed GIMP  If GIMP is open, close it and re-launch it.To optimise an image, open it then save with menu File->Save for web with RIOT  You can set the target file size by selecting "Compress to size" button  on bottom right corner of optimised image pane and providing the size in kilobytes. Alternatively you can use a slider provided to allow you to change the quality while showing you a preview of the resulting image.


Acer Aspire V5-471 Solution to "Operating System Not Found" After Changing From UEFI to BIOS

If you deliberately or accidentally change an Acer Aspire V5-471 (probably other Acers as well) boot setting from UEFI to BIOS, then you may be in for a shock when you try to start the laptop.

You may get the message Operating System Not Found on the top left corner of your screen or something similar.

Ideally you can press F2 during booting and get into booting settings and change them but in my case F2 does not work! Nothing works - neither a bootable DVD, bootable USB drive or whatever else you throw at it to try to get the machine to wake from coma.

You could spend a year searching various forums. You will learn very little. Some will call you dumb for messing up your BIOS settings.

The answer came from a very smart guy from Nakuru, Kenya called Weru (it means Savannah as in Savannah Institute for Business and Informatics). Open the machine's casing. Pull out the motherboard. Remove the BIOS button battery.

In the laptop motherboard above, the battery in the round whitish obj…

How to Stream Live With Your Smartphone

Using Larix Broadcaster , you can stream live video and audio from a smartphone running Android, IOS or Windows. The steps are:
Download and install Larix from the link above.Configure LarixTest with the streaming server provided by whomever is hosting your live streamWhen requested, start sending your stream.
Before giving details explanations of how to configure Larix, its important to note one of two things about the stream:
Many people may be watching worldwide and its important to test and then, during the live stream, ensure only acceptable video and audio are sent to the server. The Larix website illustrates the connection between your phone, server and the viewer devices. Clear video requires planning your shot - from which direction? is the lighting good? will bright lights interfere? Is there traffic noise or other interference.Maintain your smartphone in  landscape orientationIf more than one person are to stream to the same server, be on standby and start your stream promptly…