You cannot change a phone's frequency.
A phone does not change the electricity. They operate on DC power and use frequencies for communication tones
Each cell is surrounded by six other cells, so a total of 7 cells. that gives us 840/7=120 frequencies
It really depends on the cell phone company you have some don't let you change and some do. I would advise you to contact your local cell phone company.
Do edit, then retype the number.
No. It might damage the phone, though.
Cell phone network extenders can be a wonderful way to improve your cell phone service. They are easy to install and are an affordable option if you do not wish to change your service provider.
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Mobile Phones
No, because the cell phone networks work on different frequencies, there is no way to get a cell phone bought in Japan to work here. If it was manufactured in Japan, but intended for sale in the United States then it would work, but not if it was intended for sale in Japan.
Two people talking on the cell phone at the same time will usually be communicating at different frequencies. The cell phone can manage a range of frequencies.Modern cell phone networks use TDMA. This includes GSM, a variation of TDMA. The first three letters stand for "time domain multiplexing"; what this means is that up to 8 people can talk on the same frequency at the same time. One cell phone transmits for a few milliseconds, then the next one, etc.; since the change occur so fast, it seems, to every one of the people speeking, that they are constantly connected.
No, you typically need cell service or a Wi-Fi connection to change your voicemail greeting on a cell phone.
Probably, it depends on where your phone is actually from because the frequencies may not be the same. However, Sprint is a major US cellular carrier and it is likely that your phone will work fine.