The Mechanics of Cell Phones is be simply explained here below. If one’s cell phone is not compatible with the frequencies coming from the aerial tower, then it does not matter what SIM card the person is using. From reading the cell phones in electronic engineering’ essay on this website, one will learn that the cell phones communicate via radio signals. Since the radio spectrum is a very crowded place, each cell phone is assigned a certain frequency at which it can broadcast in Mechanics of Cell Phones. Engineering in Kenya has more articles
Unfortunately, different countries give different frequencies to their cellular networks. So before one decides to travel with his/ her cell phone, one needs to make sure that it will still work in the destination country.
GSM Phones in Mechanics of Cell Phones
There are four main/ international frequencies for the GSM phones;
- In the United States, Latin America and Canada, most GSM networks operate over the 850 MHz (also called 0.85GHz) and 1,900 MHz (also called 1.9GHz) frequencies.
- In Europe, Africa Asia, and Australia, most countries use the 900 MHz (also called 0.9GHz) and 1,800 MHz (also called 1.8GHz) frequencies.
When one goes to buy a cell phone, one should pay attention to which frequencies orwhich bandwidth it supports in Mechanics of Cell Phones. Most GSM global cell phones are dual band (2 bands) phones that only work following the two most common frequencies for that particular country. But if one plans are to travelling overseas, it is wiser to invest in a tri band (3 bands)or quad band (4 bands) phone that is able to connect with over three or four different frequencies in Mechanics of Cell Phones.
Improvements on Mechanics of Cell Phones
Since global cell phones are becoming even more popular and more robust, the cellular providers have begun purchasing more frequencies to support 3G and 4G cell phone service. These services are generally faster than the GPRS and EDGE settings and thus more efficient in Mechanics of Cell Phones. In some parts of Europe, cellular carriers have already started using the 2,100MHz (also called 2.1GHz) frequency for the 3G networks. In the United States of America, Verizon has purchased some space on the 700MHz (also called 0.7GHz) frequency to offer even faster browsing and data transfer speeds using a new 4G technology known as the Long Term Evolution (LTE) protocol in Mechanics of Cell Phones.
Every GSM cell phone is loaded with a SIM card. The SIM card holds the owner’s phone number, contact list and even other account settings. SIM cards can be changed in and out of any unlocked GSM cell phone in Mechanics of Cell Phones. So if one travels, one can buy a local SIM card with the local phone number and use it with the GSM cell phone.
Conclusion on Mechanics of Cell Phones
A new SIM card will however not change the frequency coverage of the phone. One still needs to have a cell phone that communicates over the right frequency for the destination country. Now that GSM frequencies and SIM cards work has been explained, it is crucial to consider this information on Mechanics of Cell Phones before traveling abroad.