Guam Technical Information – In Short

• Guam Voltage: 110 V
• Guam Electrical Frequency: 60 Hz
• Guam Plug: A or B
• Guam DVD Region: 1
• Guam Blu-ray Region: A
• Guam GSM Frequency: GSM 1900

Guam Technical Information – In Details

Guam Voltage

The voltage in Guam is 110 V which is the same voltage used in United States of America, Canada, and Japan.

110 V has an advantage over higher voltage such as the 230 V voltage that it is considered generally safer as it is less powerful. On the other hand, it costs more to transmit power to the end user using 110 V as copper lines must be thicker, hence lower voltages are generally used by wealthy countries.

Guam Electrical Frequency

The electrical frequency in Guam is 60 Hz.

Note that most household and electrical/electronic equipments nowadays support multiple frequencies, so generally, electrical frequency is not an issue compatibility wise.

Guam Plug/Socket Type(s)

The plugs used in Guam are A or B.

Plugs/sockets are usually an issue when it comes to traveling, so always make sure you travel with a universal plug adapter.

Guam DVD Region

Guam uses DVD Region 1.

DVD Region 1 is mainly used by North America (US and Canada), and the US Territories.

Note that a region 1 DVD cannot play on a DVD player supporting another region. There are, however, some region free DVD players available that can be used to overcome this.

Guam Blu-ray Region

Guam uses Blu-ray Region A.

Blu-ray Region A is used in North/Central/South America, Japan, Taiwan, North Korea, South Korea, Hong Kong and Southeast Asia.

Theoretically, a region A Blu-ray disc should not play in Blu-ray disc players supporting another region. However, most Blu-ray discs are now region free (meaning they can work on any Blu-ray disc player), and most Blu-ray players are also region free. Hence, compatibility is rarely an issue (for now) when it comes to Blu-ray discs.

Guam GSM Freqency(ies)

Guam uses the GSM 1900 GSM frequency.

When travelling, make sure that your phone supports the GSM frequency of the country you’re traveling to. Usually the supported GSM frequencies are printed on the box of your phone as well as its manual.

Top Compatible Countries

• Mariana Islands (83% match)
• Dominican Republic (83% match)
• Bermuda (83% match)
• American Samoa (83% match)
• United States of America (83% match)
• Mexico (67% match)
• Barbuda (67% match)
• Belize (67% match)
• Puerto Rico (67% match)
• Marshall Islands (67% match)
• Canada (67% match)
• Palau (67% match)
• Micronesia (67% match)
• Brazil (67% match)
• Panama (67% match)