Frank Slootweg <th...@ddress.is.invalid> wrote:
> VanguardLH <V...@nguard.lh> wrote:
>
>> Scenario 1: BT radio is active, and scanning for BT devices. Whether
>> any BT devices are connected or not, the BT radio stays on
>> looking for more devices.
>
> The BT radio isn't 'on' all the time, it's polling.
BT LE sleeps at intervals, and why it saves power. Does BT Classic do
that, too? Your phone should be capable of connecting to both.
What is the polling interval on the phone's BT radio?
>> Scenario 2: BT radio is on. BT LE device detected. Connection
>> established.
>> How much more power does the BT radio consume for just that
>> connection?
>
> The "connection" is very short, probably milliseconds, but even a even
> seconds uses negligible amounts of power compared to overal power
> consumption of the phone.
When I made my statement, did I say there was a huge drain on the
battery? I didn't equate it to a muscle car when you floor it you can
see the gas gauge creep down to empty. Did I say there was a
significant drain on the battery? No, I said there battery drain.
Minimizing how much is the drain doesn't obviate there is a drain.
There is dirt on your face. Could be your face is covered with mud, or
just a little smudge. Regardless of magnitude, there is dirt on your
face.
Because I, nor anyone here, so far, knows what is the battery drain
under various scenarios of connection protocols, no one has yet to give
info on just how much drain is caused by the always-running FindMy (iOS)
or Find My Device (Android) services which obviously must be using the
BT radio whether a constant on-state or by a short BT poll initiated by
the services. Seems this is deep dark technology that neither Apple or
Google are divulging. So far, my web crawling hasn't turned up details,
either. All you get are personal experiences related as stories. I'm
not sure this detailed info is exposed.
>> Scenario 3: BT radio is on. BT LE device detected. Connection
>> established. FindMy service is always running. Report is
>> sent via Internet (cellular data or wifi) to Apple. Does
>> the cellular radio consume any more power to send the data?
>
> Sigh! Are you serious!? Yes, but it's also negligible. The normal
> phone to/from tower polling uses *way* more power than the few seconds
> (if that much) needed to exchange the data.
I wouldn't thought the FindMy or Find My Device services would use texts
since those require less initial (setup) power to establish a connection
to a cell tower than the initial burst of power to establish a call.
This is something else that I've not found noted: how the reporting
service connects to the server collecting the data (cellular call,
cellular data, wifi). Could be I just have not yet happened upon the
technical details on what method reporting uses, but I've not seen
anyone here yet offer their opinion or surmise. Could be it tries a
call, upon failing that tries texting, upon failing that tries cellular
data for an Internet connection, but if the phone has a wifi connection
then try that first for an Internet connection.
> Face it, for the scanning for and detecting of BT devices, the Find My
> service does a similar thing as is done by Corana/COVID tracking apps.
> The latter do hardly use any additional power (compared to the normal
> functions of the phone). (Yes, we've actually used said app for a long,
> long time. So again *facts*, instead of silly baseless assumptions.)
I'm not really interested in single cases trying to claim an example
that tries to prove a point. I have been touring the Web and forums,
and reports are inconsistent. Some say they notice battery drain
(although small), and some don't (perhaps too small to measure with the
crude info presented on a phone). Whether small or insigicant, there is
battery drain as I said. Yes, I know you and others want to pooh-pooh
the small drain, but it is still there.
"A few million here, a million there, and pretty soon you're talking
real money" (change "million" to "[tenths of] milliampere".)
> There is no reason to assume that the Find My service uses
> substantially more power than the Corana/COVID tracking apps. After all,
> the framework for both is developed by Apple.
> No, what you said was much worse. You said that GPS had to be on for
> the whole time.
The FindMy service enables/activates/turns on the GPS radio for a short
time when a tracker tag is detected via Bluetooth, and after sending the
report the service disables/deactivates/turns off the GPS radio?
I said what I did from what I read, and the articles mentioned GPS gets
used when sending the report where the tag got detected. It added
accuracy as any reading into location services will also explain. I
gave a link to an article that mentions location accuracy with GPS and
without. Without GPS, 1500 meters is a long ways away, so I don't see
the value in reporting a locator tag somewhere in a half-mile radius.
Yes, you said GPS was not required. Correct. Location services will
still operate without GPS. Without GPS, I'm not sure the point of
trying to find the tag in an area about the size of a metropolis
airport. It would, however, help in seeing your luggage is at some
other city's airport. You could see you left your bag at a college, but
you'll have to remember where you were there to retrace your steps. GPS
would make more accurate and less work finding the tracker.
I can drive (perhaps not legally) with fogged over car windows, but I'd
prefer to defog them beforehand.
Thanks for your opinion/viewpoints, though. Spurs me to investigate
further. Be nice if there was in-depth technical analysis of battery
drain by FindMy service on iPhones, Find My Device on Androids, and
radio power consumption instead of observational opinions based on
personal opinions. We all have our own stories to tell about our
separate and individual experiences.
I've never had a lithium battery explode. My experience. Others have
experienced lithium-caused fires. The stories really don't provide a
good analysis of why it happened for some, and not for others.
When I want to find out how many deer have been hit on what type of
roads, how close the flora was to the road, if there were barriers
alongside the road, time of day, doe or stag, time of year, headlights
on or off, I don't ask my friends if they hit a deer or not other than
to swap stories. Their stories doesn't provide information how many
deer get hit each year under what conditions. Stories are great (or
sometimes bad if it's a sad story), but it really doesn't give in-depth
background. Geesh, could you imagine trying to swap deer-hit stories at
that level of detail? But if you want to know why or how those
accidents happen, details are needed.