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Mobile phone battery life - conundrum

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BillyB
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Postby BillyB » Mon, 21 Jan 2013 1:55 pm

Simple solution - stop looking at porn on your phone (JR8 and nutnut)

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nakatago
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Postby nakatago » Mon, 21 Jan 2013 2:00 pm

BillyB wrote:Simple solution - stop looking at porn on your phone (JR8 and nutnut)


Actually, for JR8, a smartphone that lasts 48 hours is impressive. That means he barely uses it. :cool:

...since he's probably on a computer most of the time anyway.

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Postby x9200 » Mon, 21 Jan 2013 3:13 pm

I've got HTC one-V and it lasts probably 4-5 days with rather low signal, but yes, I hardly use it (some texting and calling only) and the software says the display drains 90% of the battery power, cell standby 6% and all the rest 4%.

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Postby ScoobyDoes » Mon, 21 Jan 2013 3:42 pm

x9200 wrote:I've got HTC one-V and it lasts probably 4-5 days with rather low signal, but yes, I hardly use it (some texting and calling only) and the software says the display drains 90% of the battery power, cell standby 6% and all the rest 4%.



I would be about the same. My battery app indicates I use anywhere between 0.5 and 2% per hour depending on 2G, 3G and/or on WiFi which is hardly ever switched off.

Lynx, GPS is a killer for your battery and this was the sole reason why I bought a plugin for the car. Instead of fixing your network specifically on 3G or Auto are you able to switch it to 2G and see if it works any better?
'When Lewis Hamilton wins a race he has to thank Vodafone whereas in my day I used to chase the crumpet. I know which era I'd rather race in.'

SIR Stirling Moss OBE

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Postby rajagainstthemachine » Mon, 21 Jan 2013 5:02 pm

turn off wifi, bluetooth and gps when you aren't using them this will extend the life of your battery.
set your brightness level on your phone to less that normal and i believe some phones have a power save mode option as well
remember wifi antennas and your gsm antennas operate independent of each other and will both consumer power.
this is also true for your laptops and computer batteries too.

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Postby x9200 » Mon, 21 Jan 2013 6:26 pm

The power consumed by antennas is negligible and does not come from the battery or you meant the receivers? :-k

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Postby rajagainstthemachine » Mon, 21 Jan 2013 7:02 pm

x9200 wrote:The power consumed by antennas is negligible and does not come from the battery or you meant the receivers? :-k


well the main culprit is the wifi antenna it constantly scans for wifi networks
and tries to determine the network type whether secure/unsecured or the type of encryption and reconnection time outs and so on.
this drains the battery cause this act consumes a lot of power.

the next major offender is gps, once again these are seeking satellites in the sky and they all use the method of triangulation to determine current positioning.

if you turn both these features off when not in use it can prolong the life of the battery.

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Postby x9200 » Mon, 21 Jan 2013 7:26 pm

May I suggest you start with wikipedia and check what a radio antenna is? In short, antenna is typically a piece of metal attached to a receiver/transmitter.

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Postby zzm9980 » Mon, 21 Jan 2013 8:17 pm

rajagainstthemachine wrote:
x9200 wrote:The power consumed by antennas is negligible and does not come from the battery or you meant the receivers? :-k


well the main culprit is the wifi antenna it constantly scans for wifi networks
and tries to determine the network type whether secure/unsecured or the type of encryption and reconnection time outs and so on.
this drains the battery cause this act consumes a lot of power.


I'll toss you a life-line since I think x9200 giving you a hard time for being factually incorrect went right over your head: You're attributing functions that require the entire wifi stack from antenna to radio to software, etc, all to just the antenna.

(good Samaritan post of the day)

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Postby rajagainstthemachine » Mon, 21 Jan 2013 8:45 pm

x9200 wrote:May I suggest you start with wikipedia and check what a radio antenna is? In short, antenna is typically a piece of metal attached to a receiver/transmitter.


1.wikipedia is a bad source to reseach on antennae..

2. typical antennas are a piece of metal,however cell phone antenna are different
Phones like the samsung galaxy use upto 6 antennas called planar inverted F antennas
as illustrated below
Image

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Postby durain » Mon, 21 Jan 2013 8:45 pm

so what's an aerial? :D :D :D

anyway, i got one of those "usb battery bank" for emergency use when my mobile is totally drained. very handy gadget to have.

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Postby rajagainstthemachine » Mon, 21 Jan 2013 8:50 pm

zzm9980 wrote:
rajagainstthemachine wrote:
x9200 wrote:The power consumed by antennas is negligible and does not come from the battery or you meant the receivers? :-k


well the main culprit is the wifi antenna it constantly scans for wifi networks
and tries to determine the network type whether secure/unsecured or the type of encryption and reconnection time outs and so on.
this drains the battery cause this act consumes a lot of power.


I'll toss you a life-line since I think x9200 giving you a hard time for being factually incorrect went right over your head: You're attributing functions that require the entire wifi stack from antenna to radio to software, etc, all to just the antenna.

(good Samaritan post of the day)


when i said antenna, i don't refer to a piece of wire sticking out somewhere.
in reality its a combo of antenna + preamp + demodulator + decoder + whatever application is controlling it.
I only mentioned antenna in order to simplify things.

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rajagainstthemachine
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Postby rajagainstthemachine » Mon, 21 Jan 2013 8:55 pm

also if you notice in the diagram below, the wifi antenna has transmit and receive functions,typically transmission consumes more power than reception
there are at least 3 antenna's in that diagram with transmit functions in the diagram.
and since with a wifi enabled phone as you move around from place to place the wifi frequencies are constantly scanned thus draining your battery life away.

Image
[/img]

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x9200
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Postby x9200 » Mon, 21 Jan 2013 9:30 pm

rajagainstthemachine wrote:when i said antenna, i don't refer to a piece of wire sticking out somewhere.
in reality its a combo of antenna + preamp + demodulator + decoder + whatever application is controlling it.
I only mentioned antenna in order to simplify things.


I am sure everybody is convinced this was the case.

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rajagainstthemachine
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Postby rajagainstthemachine » Mon, 21 Jan 2013 11:17 pm

x9200 wrote:
rajagainstthemachine wrote:when i said antenna, i don't refer to a piece of wire sticking out somewhere.
in reality its a combo of antenna + preamp + demodulator + decoder + whatever application is controlling it.
I only mentioned antenna in order to simplify things.


I am sure everybody is convinced this was the case.


It's not like I'm presenting a research paper here, sure my words could have been worded wrongly. every post doesn't have to be a 100% correct, there isn't a need to nit pick

#justsayin


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