Battery Life for Cell Phones
With all the different cell phones out there today, battery life is still one of the most critical issues to consider when buying a new phone. Some phones can last up to ten hours on a single call, but others last barely four hours. Why?
Much of it has to do with the different network technologies used by the different providers; basically, CDMA phones work on Sprint and Verizon, while GSM phones work on AT&T and T-Mobile. These competing networks have different power requirements. Battery life also depends on the data speed a particular phone supports. For instance, phones using a 3G network will require more battery power to operate than phones using a 2G network.
Knowing this, generally cell phones which have the most talk time available are 2G GSM phones on AT&T and T-Mobile, because of the network and data speed these phones use; a GSM phone with a full charge can last nine or ten hours. Next would be Sprint and Verizon 3G EV-DO phones, which on average last around five hours, give or take an hour. The biggest drains on battery life are the AT&T and T-Mobile 3G phones, which uses a HSDPA network for voice and data. Their batteries last about 45 minutes to an hour less than 3G cell phones from Sprint or Verizon.
In short, if battery life is your main concern, an AT&T or T-Mobile 2G phone is your best bet; but keep in mind that what you gain in talk time, you sacrifice in data network speed and voice quality.
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