Technical question
I was wondering if anyone had noticed this, but it seems that phones that use GSM networks have a much longer battery life then thos phones which use CDMA. Now is this merely a coincedence, or is it an inherent property of the protocol.
Thanks
Thanks
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Whelp it does indeed depend on technology, phone maker, and included battery.
Compare AMPS (analog service) to say CDMA. The CDMA will give you ALOT ALOT more battery life than the AMPS service. GSM uses less battery than that. Why? I'm not an engineer so I sure as hell don't know.
Compare AMPS (analog service) to say CDMA. The CDMA will give you ALOT ALOT more battery life than the AMPS service. GSM uses less battery than that. Why? I'm not an engineer so I sure as hell don't know.
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I'm not a telecom engineer, but I play one on the web. ;)
CDMA's singal encoding requires more CPU power than GSM's signal encoding.
But all things are not equal here. CDMA requires less gain (i.e. less power to the transmitter), so there's plenty of situations where it will actually require *less* power.
AMPS requires a *lot* of gain, which sucks your battery dry quickly.
It's nearly impossible to actually quantify these sorts of things without taking two identical phones throughout the exact same routine, etc. Also, newer generations of electronics have more computing power for less battery power, etc.
So the real highlight here is that it's really not particularly possible to make any broad generalizations. And the other...
(continues)
CDMA's singal encoding requires more CPU power than GSM's signal encoding.
But all things are not equal here. CDMA requires less gain (i.e. less power to the transmitter), so there's plenty of situations where it will actually require *less* power.
AMPS requires a *lot* of gain, which sucks your battery dry quickly.
It's nearly impossible to actually quantify these sorts of things without taking two identical phones throughout the exact same routine, etc. Also, newer generations of electronics have more computing power for less battery power, etc.
So the real highlight here is that it's really not particularly possible to make any broad generalizations. And the other...
(continues)
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Over all, digital mode will use less power as it adjusts to the distance from the tower (i.e. closer less power output, longer battery life) analog mode will always use .3 watts (maximum allowed) so it will use a battery up real quick. This is the mode that the "brain burner: cell phones were tested in (I don't buy into it).
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badsky2k said:
Over all, digital mode will use less power as it adjusts to the distance from the tower (i.e. closer less power output, longer battery life) analog mode will always use .3 watts (maximum allowed) so it will use a battery up real quick. This is the mode that the "brain burner: cell phones were tested in (I don't buy into it).
Right. But it wont use any additional battery power unless you are actually making a phone call in analog. If your phone is just searching for a signal, the myth about this using extra battery power isn't true.
-Verizon Wireless Sales
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