I have my Tilt set up to charge when on USB. However, when I tether and download a lot of data, the phone seems to be using its battery rather than the power provided through the cable. I am connecting through a powered USB hub so there should be enough current.
When the phone is fully charged the green led remains lit but when I disconnect the phone the battery level drops 20-60% within 20 minutes or so. Also, when I leave the computer tethering through a phone for about 12 hours, it will eventually reset because the battery reaches a critical level.
I tried using a Y-USB cable (with 2 USB plugs for extra power) but there was no difference. So, I hooked up the phone through AC adapter and tethered through bluetooth. Again, the problem remains.
This seem to appear when downloading or uploading data over longer periods of time on 3G. When using HSPA it's even worse and often the green led starts blinking (as if there was no power from USB even for a standby mode).
The effect is not as noticeable when doing light browsing, especially on Edge.
Has anyone else experienced a similar problem?
Well, you basically answered the question. It should charge, while connected, but HSDPA burns battery at a rate faster than it can charge.
BUT, something doesn't sound right with your set up. It shouldn't drain THAT fast, even on HSDPA, esp if it's idle. While idle on 3G, it'll still use some battery, but it shouldn't be enough to burn your battery out.
I can think one of 2 things is happening. Either:
(1) yours isn't really charging while connected and tethering. I use Internet Sharing to tether. I assume you are also. Ther is a way to tether not using Internet Connection Sharing where it does NOT charge. Maybe that's how yours is set up? Or
(2) your "idle" connection isn't really idle. Some process is still actively querying and using the net connection.
Bottomline: on Edge, mine will net charge, not net lose. On 3G, mine will net charge, but very slowly. On HSDPA, mine will consume battery, but at a rate much slower than if I was just browsing on my Kaiser directly.
jomo25 said:
something doesn't sound right with your set up. It shouldn't drain THAT fast, even on HSDPA, esp if it's idle. While idle on 3G, it'll still use some battery, but it shouldn't be enough to burn your battery out.
Click to expand...
Click to collapse
Thank you for your comments. I am using "Internet Sharing" and you are right - my connection is not idle. I do FTP download or upload at the rate of 20kb/s over a few hours.
While I thought the battery drain is understandable with the USB setup (not enough power) I am surprised to see the same problem when using an AC adapter (tethering via bluetooth). The output in my AC charger gives 5V / 1 A.
Is there a way to provide more power to the phone so I don't end up with drained battery after a longer tethering session?
Well, the only thing I can think of is to throttle your connection to no more than UMTS speed. I.e. disable HSDPA, but not all 3G. Or of course throttle all the way back to Edge. But of course, this sacrifices your connection speed. Using only UMTS (normal 3G) is sufficient for most of my purposes.
You can diable HSDPA by "Settings | Connections | HSDPA" ANd uncheck it.
You can disable 3G altogether by switching your band to Edge only or using one of the modified Comm Mgr apps that have a 3G toggle.
I don't know of any way to "up the power" to the phone.
If you require such an intensive data connection wouldn't it be better to invest in a PCMCIA HSDPA card?
You are pushing the phone way beyond recommended limits and the heat alone will probably fry the Tx or battery or some other circuit.
Just a thought.
Have you thought about reducing the power consumption of the other elements of your phone?
Do you for example turn down the screen brightness to minimum, and turn of bluetooth? Those two alone (especially if bluetooth is discoverable) are massive power drains all by themselves.
Surur
So far, throttling the speed seems to be the only working solution. I suspect that a PCMCIA HSPA card would require a different data plan with AT&T.
As for turning off features - yes, I use an app that turns off the screen and recently I started turning off bluetooth as well (although it has never been set to be discoverable).
all I can say is wow that's some hardcore usage! though I am a bit surprised that it drains battery so fast, I guess its cause of the power technology used, the phone can't use the mains directly as it can only pull power from the battery which can only be charged so fast due yo its nature, but weird !
It might be that transferring data at the same time as charging prevents it from charging as efficiently since it's using the same port.
Greg220 said:
So far, throttling the speed seems to be the only working solution. I suspect that a PCMCIA HSPA card would require a different data plan with AT&T.
Click to expand...
Click to collapse
Just an FYI - if you use that much data xfer, dont be surprised if AT&T force-switches you to a more "appropriate" plan. There have been documented cases where AT&T will audit data usage and if you are on a plan that is "unlimited" but only for data usage from the phone, they will change you over to the data plan that is essentially the equivalent of getting the data card. The user agreement of some of the PDA data plans does say there are actually limits to the "unlimited" data. Not sure if you are on AT&T or which plan you have, but thought I'd let you know in case.
jomo25 said:
Just an FYI - if you use that much data xfer, dont be surprised if AT&T force-switches you to a more "appropriate" plan
Click to expand...
Click to collapse
That's a valid point and it's a calculated risk If this happens, I'll just cancel my data plan and go with some other solution. Fortunately, I'm not under a contract with AT&T.
jomo25 said:
Just an FYI - if you use that much data xfer, dont be surprised if AT&T force-switches you to a more "appropriate" plan. There have been documented cases where AT&T will audit data usage and if you are on a plan that is "unlimited" but only for data usage from the phone, they will change you over to the data plan that is essentially the equivalent of getting the data card. The user agreement of some of the PDA data plans does say there are actually limits to the "unlimited" data. Not sure if you are on AT&T or which plan you have, but thought I'd let you know in case.
Click to expand...
Click to collapse
I've heard rumors of such "documented cases" but do you actually know anyone this has happened to? Has it eer happened to anyone on this board?
I find this happends on my phone too.
When it does i just try to make sure all other features are off, like bluetooth and wifi, and turning screen brightness off, and of course pressing the power button so that the screen off altogether.
You can get 2800mAh batteries from ebay for about a tenner which I think I'll get, that way if I am loosing charge it doesnt matter so much as I will still have loads left.
seb
Farsquidge said:
If you require such an intensive data connection wouldn't it be better to invest in a PCMCIA HSDPA card?
You are pushing the phone way beyond recommended limits and the heat alone will probably fry the Tx or battery or some other circuit.
Just a thought.
Click to expand...
Click to collapse
I tether my phone 7 hours a day during the week and it doesn't get hot enough to hurt anything. Please don't spread misinformation like this as it's simply not true.
If it does the same thing with an AC charger and BT connection, I would suggest that maybe your phone is defective. Mine will charge while tethered and continues charging (up) on HSPDA or any other connection type even if I'm talking on my BT headset at the same time.
It's a pretty well known fact that charging via USB cable connected to a USB device is slower than charging via the wall charger. So why not follow the instructions to setup tethering via Wi-Fi as specified in this thread?
With this, you can tether as many computers as you want all at the same time and still be charging.
Hope this helps...
Same behavior observed here with both Hermes and Kaiser
5V 1A power supply and Kaiser doing tethered 3G data via BT will discharge the battery. I see battery discharge when docked to a 2A 5V supply and talking BT on 3G while DirectPush runs.
IMO, HTC caps the total power consumption and sacrifices battery charging when the total exceeds ~1A
Richard
Related
is there any way it can help my tilt from preventing battery drained..it was fulled charged at 11 pm (only instant message was still running but no messages), woke up at 9am and theres only 53% battery left. i barely listening to music but when i do it killed faster.
changing radio can change the rate of battery drain
What type of Messaging were you running? What program? Some keep a continual data connection & if you're in 3G territory that can easily account for that battery drain.
I used to leave HSDPA on and auto check email every 10 mins, my battery only last more than a day even without any phone call in this time. I was then disabled the 3G + HSDPA, just leave the GSM on (changed this in the phone's band), my battery now last about 4 days and still have some power.
Your data connection kills your battery severely, this may be what caused your battery drain 50% over night.
my 3G is always on. I have internet and everything. does 3G interfering my internet connection?
u can get very good battery life when 3G service is deactivated.
also make sure disable wifi, make sure when not in use no application will auto on the wifi...
make sure device lock is set to lock all buttons.
seanv said:
I used to leave HSDPA on and auto check email every 10 mins, my battery only last more than a day even without any phone call in this time. I was then disabled the 3G + HSDPA, just leave the GSM on (changed this in the phone's band), my battery now last about 4 days and still have some power.
Your data connection kills your battery severely, this may be what caused your battery drain 50% over night.
Click to expand...
Click to collapse
what does HSDPA do? i turned off 3G already. i pay unlimited monthly internet so are those things that i turned off interfering anything from it? i Disable HSDPA already and my internet still connecting. sorry for many questions but im pretty new at this tilt.
Just make sure the icon and or mobile operator name has no 3G indication. Yes u still can get connected via internet, which is through your GPRS, which online activates when as you wish. 3G is passive mode whereas GPRS is dynamic.
Dear all,
With a small 900mAh battery, What is the real world usage time? I mean making up to 2 hours of calls per day does it last at least 12hours before the need to recharge battery and this is assuming that 3G is on all the time. Thanks.
French network technical support say 60 hours with GPS on !!!!
I think it's joke.
Well, I've been watching the battery life on mine for a couple of days now in a reasonably scientific way and here are the early rather speculative results:
With just GPRS and nothing else on and very light use the battery drops from 100% to 80% very fast - less than an hour of light use.
Leaving it running on these settings will run it down to about 20% by the end of the working day - the drain seems to ease off aftert he first sharp drop
Powering up wifi and music for short time doesn't seem to make much difference.
Turning 3G on also doesn't seem to make the difference you would expect either.
So basically I would feel the need to take a charger with me if I left the house for the day, which will probably mean that I have to send the thing back. I've seen the coolsmartphone video review and mine isn't performing anything like that one - I would say I am loosing charge at about twice the rate.
Now the only issues that could be at work here is that I live in a lousy reception area. But could this really make such a difference?
What I would find really useful is a list of other tweaks you can make to cut power use so I can try them out. But at the end of the day it's looking like too many compromises would be needed to make this thing practical for me.
Reception would make a reasonable difference if normal network messages are being sent/received (general scans of BCCH channels, authentication with the network) - i.e. the radio isnt being used for data/voice, and only to keep registered to the network. But during those times the rest of the phone would also be in low power mode, so i would say an absolute max of 5 to 10%.
It would make a significant difference if you are transmiting data/making calls in a low reception area. I would say easily upto 20%.
It sounds to me like if you plan to use the phone much at all during the day you need a second battery. Then that turns into the hassle of how to charge the second battery every night, and i bet the desktop stand can't charge a second battery
My conclusions exactly. Impractical to say the least.
The puzzle then is why my last phone, a Nokia E51 with a 1050 mAh battery, under the same conditions, managed to last 2-3 days?
Is WM6 really that much of a power grabber compared to S60?
moonlanding said:
My conclusions exactly. Impractical to say the least.
The puzzle then is why my last phone, a Nokia E51 with a 1050 mAh battery, under the same conditions, managed to last 2-3 days?
Is WM6 really that much of a power grabber compared to S60?
Click to expand...
Click to collapse
Short answer - yes.
There's all these power saving features in new app processors like being able to leave the screen on while powering down the main CPU. You can use an interupt from the radio to wake up the processor etc.
Windows doesnt support half of these features, thats why find windows phones save all their power by turning the screen off. Other phones with screens just as big are alot less regimental about turning the screen off at any opertunity.
I was involved in a project once to design a smartphone and it was a really surprising how much difference there was between the windows version they suplied and an ARM version of linux.
I have HTC Touch Crouse and i have problems with battery (GPRS always on and Bluetooth) ... now with Diamond i have VERY BIG Problem. Battery Keeps less than one day ...
The experiment continues.
Disabling "GPRS auto attach" in Advanced Configuration Tool has made a big difference - still 90% after 6 hours now.
Now this is a surprise to me because I thought that you did this when you set the network seek to GSM only and not hunt for 3G. Or maybe I'm getting my GPRSs and GSMs mixed up...
Next step - leave this setting in place and turn push back on. Watch this space.
GSM digitises your voice and slots it into a time divided channel on a frequency, and marks it as voice. On the network side, it converts this back to voice and sends it on the PSTN network (for a landline call).
GPRS takes data you want to send and inserts it directly in the same time divided channel and marks it as data. On the network side the network transfers this onto the internet (or other network) through the GGSN (its essentially a router).
So GSM and GPRS use the same technology. Setting the phone to GSM only, just stops it connecting to 3g networks.
Anyway, when you turn your phone on, the tower tells it its capabilities eg GPRS. This give you a GPRS available icon. When you actually want to send data, you need to 'attach'. This is like logging into the network.
To do that you need to open a data channel and send your login details.
Normal phones will do that i.e. attach, and then go idle. The network will only log them off if they move to a new cell and do not reauthenticate.
Anyway, if you are not attached:
- When you send data, the phone will need to attach first (milliseconds delay) - unoticable.
- You will NOT have an IP address so incoming data can not reach you.
If you use pop3 with regular pull of email, it'll make less difference the more frequently you pull your email - because every time you do, the phone will attach.
If you use PUSH email, it'll make no difference because you have to remain attached (have an ip address) for push to work.
I'm sure most people didn't care to know all that but i'm sure some did!
Wow. Thanks. Impressive.
Let me try to summarise. With auto attach off the phone isn't trying to attach to the 3G network all the time which saves power. But it is also disconnected from GPRS and data networks. However this won't affect push email because it will attach when it needs to, ie when the network tells it that there is mail or I send something out. Is this right?
What about internet? Will the phone automatically attach to the data netowrks when I fire up Opera? Presumably to attach to 3G I will need to reset to automatically seek WCDMA.
moonlanding said:
Wow. Thanks. Impressive.
Let me try to summarise. With auto attach off the phone isn't trying to attach to the 3G network all the time which saves power. But it is also disconnected from GPRS and data networks. However this won't affect push email because it will attach when it needs to, ie when the network tells it that there is mail or I send something out. Is this right?
What about internet? Will the phone automatically attach to the data netowrks when I fire up Opera? Presumably to attach to 3G I will need to reset to automatically seek WCDMA.
Click to expand...
Click to collapse
You're still a bit confused i think. Ok on a phone you have voice or data. Data covers mail, internet, weather updates etc etc, voice covers phone calls.
There are two distinct protocols here, and we need to talk about them diferently...
GSM:
With GSM calls are sent over 1 timeslot and singalled as voice.
To make a call you need to have a signal, that takes a very short few messages which are sent every 20 minutes or so, or if you move around between towers. The Radio in the phone can do this all by itself without waking the phone up.
If you want to send ANY data (emails, internet, anything) you need to use GPRS. GPRS uses the same channels but inserts data into them instead of voice. Before you can send or receive any data you need to 'login' to the network. To login you need to actually open the channel and make a connection. Logging in is called 'ataching'. When you attach you get an IP address and the network can send stuff to you and u can send stuff to the network. Attaching needs to wake up the phone.
Once attached the phone can go into a sleep mode saving power, but any data send or received will wake up the phone.
UMTS/3G
UMTS is different in that everything is sent code divided. There is no 'login' or attach as such. In this mode all your voice gets converted to data and sent across.
---
With auto attach on:
If you use 3G mode, every time you switch between a 3G and GPRS area the phone will atach (GPRS) again, this will drain power.
Every time you move out of GPRS and come back into GPRS the phone will attach, even if you have nothing to send.
With autoattach off:
The phone will only attach if it has something to send AND is on GPRS (no 3G available or 3g turned off)
The upside is that you save power when you move between cells. The downside is that you can't receive any data from the network untill you decide to attach.
For push email for example you would never end up detaching as it would hold the connection open.
Anyway i hope that clear, but i'm quite sleepy so it might not make any sense lol
That makes sense to me. When I get my Touch Diamond, I'm definitely turning 'GPRS auto attach' off, because I don't think I need it on.
someone1234 that`s really useful info.I guess autoattach off is the best option for me too. WHEN the phone arrives.
Thanks again senior1234. I'm getting there. But this is more complex that I thought so I've gone back and checked what really makes a difference to the battery life.
The big difference for me is having the phone band set to GSM only (phone, options). Disabling auto attach makes a difference but not as much as I thought. I had changed both of them at the same time, thinking that they were more or less the same thing. Sorry folks. Very unscientific.
But if you feel like trying these bear in mind that I don't move between cells very much and have awful reception. I'll leave it to others to explain whether this is important.
HTC told me that with the screen on full brightness and phone turned on the GPS would only last about 2 hours befre the battery died, looks like we'll need the extended battery or several normal ones!
moonlanding said:
Thanks again senior1234. I'm getting there. But this is more complex that I thought so I've gone back and checked what really makes a difference to the battery life.
The big difference for me is having the phone band set to GSM only (phone, options). Disabling auto attach makes a difference but not as much as I thought. I had changed both of them at the same time, thinking that they were more or less the same thing. Sorry folks. Very unscientific.
But if you feel like trying these bear in mind that I don't move between cells very much and have awful reception. I'll leave it to others to explain whether this is important.
Click to expand...
Click to collapse
GSM will use alot less power, so that is whats definatly making the difference
Why? Well.. GSM uses time division, which means the phones in an area take turns 'speaks'/'listening' with the tower. This ensures that no two phones are talking at the same time, and the tower can 'hear' what was sent. Because of this the power the phone transmits with can be controlled to be just high enough for the tower to listen, but not too high as to waste battery.
The down side of this scheme is that even if a phone has nothing to 'say', the other phones will wait in case it does. This means you're wasting bandwidth - or time that could be used by another phone to send data. Bottom line, data throughput is slower!
With 3G, all phones can talk at the same time. The data they send is tagged with a code, so that the data doesnt get mixed up. The advantage here is no time is wasted waiting for phones that may have nothing to send. The down side is that you need to be 'talking' loud enough to 'talk' over other people sending. This is why the data rate over 3G drops off really rapidly as you move away from the tower.
The disadvantages are a phone far from the tower using 3G will use more power than one using GSM because its having to 'talk' louder to get over other phones 'talking'.
Also, signals that get lost because they were drowned out by other phones have to be retransmited, which doesnt happen with GSM as much.
Yeah 3G or CDMA based channel access methods are a real power hog!
As for Auto attach you would expect it to only make a real difference if you have programs holding channels open.
With regards to low reception, it will make a significant difference because power disipation is not linear. Like all radiation it follows the inverse square law. For every meter distance the power drops of by a square of the distance.
Don't forget, when comparing uptime with other phones, with the diamond you have 4x the amount of pixels. VGA (640 x 480) devices will always chew up more Battery that QVGA (320 x 240) . This is one of the main reasons that HTC and the others delayed shipping VGA devices until now.
If you want longer battery life, you are going to have to stop using the display so often.
There is no way a vga machine can compete with a qvga machine on battery life... when all other factors are equal.
I think if you discount 3G, the battery is a little too small for the phone. With 3G its wholy inadequate.
The screen does make a huge difference, but these screens are more efficient, and HTC have used every opertunity to turn the screen off - a bit excessivly if you look at how fast it turns off when you make a call.
I don't understand why they don't use the iphone method of turning it off when the light sensor shows its dark (in a call).. i.e. the earpiece is next to your head!
moonlanding said:
The experiment continues.
Disabling "GPRS auto attach" in Advanced Configuration Tool has made a big difference - still 90% after 6 hours now.
Now this is a surprise to me because I thought that you did this when you set the network seek to GSM only and not hunt for 3G. Or maybe I'm getting my GPRSs and GSMs mixed up...
Next step - leave this setting in place and turn push back on. Watch this space.
Click to expand...
Click to collapse
I've disabled gprs auto attach and set my band to GSM. When i connect to net with opera will it still turn on 3G etc?
nokmond said:
I've disabled gprs auto attach and set my band to GSM. When i connect to net with opera will it still turn on 3G etc?
Click to expand...
Click to collapse
good question.
i only use my phone for normal phone stuff ans sometimes for some internet browsing.
should i turn anything on or off?
What program are you using to achieve this?
Does this wear the battery down like wifi tether or if your phone is on usb the battery never drains faster than it can charge?
If the USB port you are connected to can supply the full 500mA, it will be enough power to run the tether and charge G1 (albeit very slowly). The battery will also warm up quite a bit (to about 50C). Sometimes the phone may get into a situation where it has not properly requested power from the USB controller and it will drain battery. Simply unplug and replug to fix that. It is also possible to charge faster than drain using Bluetooth tether.
The go to programs for root users would be Wireless Tether for Root and Wired Tether for Root. For stock users, check out PDAnet.
Thank you. It sounds like if I was going to set up a always on internet connection the BT is the way to go.
Here's what I'm thinking, when 7.2 becomes available from T-mo, make that my constant 24/7 connection for my desktop.
What's wrong with that plan?
jlacy76 said:
Thank you. It sounds like if I was going to set up a always on internet connection the BT is the way to go.
Here's what I'm thinking, when 7.2 becomes available from T-mo, make that my constant 24/7 connection for my desktop.
What's wrong with that plan?
Click to expand...
Click to collapse
There's still a hidden cap for the bandwidth I believe. Also, if you do any activity that requires low latency, wireless (as in cell, not wifi) probably won't work well.
Since this is sorta on the topic.. anyone know how to get the usb tethering feature an cyans rom to work? i click it, it makes sound on my lap top.. but then what?
edit: http://forum.xda-developers.com/showthread.php?t=580181&highlight=usb+tethering
cigar3tte said:
There's still a hidden cap for the bandwidth I believe. Also, if you do any activity that requires low latency, wireless (as in cell, not wifi) probably won't work well.
Click to expand...
Click to collapse
My thinking was just another g1 and use my other g1 for telephone etc. This would just replace my dsl.
Wifi tether drains my battery faster than it can charge, so what are my options?
jlacy76 said:
Wifi tether drains my battery faster than it can charge, so what are my options?
Click to expand...
Click to collapse
Use a dual input USB cable, like those for portable hard drives (example here). Or go over bluetooth. Or go over USB in cyan's roms.
jlacy76 said:
Thank you. It sounds like if I was going to set up a always on internet connection the BT is the way to go.
Click to expand...
Click to collapse
You'd probably want to use the USB instead of BT, as using the BT radio will cause additional heat generation. BT 2.1+EDR also has a hard bandwidth cap of 3Mbps (your actual thoroughput may be even lower depending on the amount of WiFi interference in your area)
Here's what I'm thinking, when 7.2 becomes available from T-mo, make that my constant 24/7 connection for my desktop.
What's wrong with that plan?
Click to expand...
Click to collapse
As stated already, the first problem would be the 10GB bandwidth cap/throttle. Secondly, it's likely you'll be getting less than 7.2 at times other than at night if you are in an urban area. Finally, your rt ping will be pretty poor compared to a wired internet service. That can translate into a sluggish browsing experience.
I can say all of the above because I am actually using HSDPA as my home internet access now (not staying where I am long enough to justify a DSL installation and contract).
I saw that in the Cyan roms and that was one of the things that triggered this search.
Even if I had 1.5 down that would be fine. 7.2 would be better but we'll have to wait and see on the cap.
The real question for me is which method won't run the battery down faster than it can charge?
Hey folks, I can probably guess at why this happens, but I was hoping someone would have a definitive answer and a possible solution.
I work in remote parts of Australia where the only internet is Telstra 3G, so I use my phone as a modem to surf the net on my lap-top. Obviously when fully charged I don't need to have the phone plugged into the wall or USB port, so I get normal speeds. But as soon as I plug her in, the speeds drop immediately. I've done multiple speedtest.net tests so I know it's happening. It even happened when I had an iPhone4 (yeah, I know...) so it seems to be something to do with charging. Is it an elctromagnetic thing that affects the aerial reception? Is there a way to reduce this interference? Kinda sucks when you want to download and charge at the same time. Or play WoW and not get too much lag...
Thanks in advance.
Never tried Wi-Fi tether but with usb it never went slow for me
Sent from my Galaxy Nexus using Tapatalk 2
I would say that your charger is introducing a source of interference. About WoW though, you shouldn't really be peaking your bandwidth in games, it's more about latency there, so that shouldn't be affected by this unless you're dropping packets when charging (could be).
Let's settle this once and for all because No one has any clear indication not even T-Mobile
Does WiFi calling use more battery (to even have it enabled) vs it not being enabled?
I would say YES. Because if you're Wifi Calling icon is showing, your WiFi is enabled. So yes, it would be using more battery. Does it mean you're day is cut in half? Most likely not.
In my experience, using WiFi uses significantly less battery than LTE. The science behind it is that the WLAN radio has significantly lower output power than the cellular modem and therefore uses less battery. My real world experience is this:
I text frequently, check FB and IG, receive push mail from 3 Exchange accounts, and spend an average of 20 minutes on the phone each work day. I do not have a desk phone or home phone.
WiFi on with calling: I can usually go to bed at 2200 with 60-70% battery remaining
WiFi on without calling or mixed in/out of office: I usually will have around 40-50% at 2200.
WiFi off (usually only happens when travelling): I usually arrive back at the hotel with 20-35%, which means I need to charge before I leave the hotel for dinner.
madmike23 said:
I would say YES. Because if you're Wifi Calling icon is showing, your WiFi is enabled. So yes, it would be using more battery. Does it mean you're day is cut in half? Most likely not.
Click to expand...
Click to collapse
i keep hearing this misnomer that wifi uses more battery, if you have it on searching and not connecting i can see how, but if you are connected to a good wifi signal, it will be much easier on your batt than LTE
The question is does the feature itself end up using more battery?
dc/dc said:
In my experience, using WiFi uses significantly less battery than LTE. The science behind it is that the WLAN radio has significantly lower output power than the cellular modem and therefore uses less battery. My real world experience is this:
I text frequently, check FB and IG, receive push mail from 3 Exchange accounts, and spend an average of 20 minutes on the phone each work day. I do not have a desk phone or home phone.
WiFi on with calling: I can usually go to bed at 2200 with 60-70% battery remaining
WiFi on without calling or mixed in/out of office: I usually will have around 40-50% at 2200.
WiFi off (usually only happens when travelling): I usually arrive back at the hotel with 20-35%, which means I need to charge before I leave the hotel for dinner.
Click to expand...
Click to collapse
So wifi without wifi calling uses more battery? am i interpreting this properly?
<WiFi on with calling: I can usually go to bed at 2200 with 60-70% battery remaining>
<WiFi on without calling or mixed in/out of office: I usually will have around 40-50% at 2200.>
WiFi is the issue not WiFi calling.
masri1987 said:
i keep hearing this misnomer that wifi uses more battery, if you have it on searching and not connecting i can see how, but if you are connected to a good wifi signal, it will be much easier on your batt than LTE
The question is does the feature itself end up using more battery?
So wifi without wifi calling uses more battery? am i interpreting this properly?
<WiFi on with calling: I can usually go to bed at 2200 with 60-70% battery remaining>
<WiFi on without calling or mixed in/out of office: I usually will have around 40-50% at 2200.>
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Ya it probably would use more battery. If WiFi is on but not the calling feature then it would still rely on the cell tower and modem inside the phone to send texts thus using more battery. But of course with all of this YMMV.
dc/dc said:
I can usually go to bed at 2200 with 60-70% battery remaining
WiFi on without calling or mixed in/out of office: I usually will have around 40-50% at 2200.
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Who goes to bed that early?
Sent from my SM-N910T using XDA Free mobile app
masri1987 said:
So wifi without wifi calling uses more battery? am i interpreting this properly?
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Correct, for the reason GriffenD mentioned. I sometimes turn it off when I have text issues with my girlfriend, who has Verizon now. Sometimes messages just disappear into the æther.
BACARDILIMON said:
WiFi is the issue not WiFi calling.
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What issue? There is no issue with WiFi.
darekz said:
Who goes to bed that early?
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People that get up at 0630. I like my beauty rest. LOL
dc/dc said:
Correct, for the reason GriffenD mentioned. I sometimes turn it off when I have text issues with my girlfriend, who has Verizon now. Sometimes messages just disappear into the æther.
What issue? There is no issue with WiFi.
People that get up at 0630. I like my beauty rest. LOL
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The issue with WiFi is it searches /scans none stop and that drains the battery. Everyone seems to have the same issue.
BACARDILIMON said:
The issue with WiFi is it searches /scans none stop and that drains the battery. Everyone seems to have the same issue.
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I don't want to argue, but that is not totally correct. Those scans are not constant, they are on a schedule, and generally have a negligible effect on battery life. They can have an impact if a user has attached their device to many networks and the device has a huge list through which to scan. Power users, I would hope, clean out their network list, making it essentially a non-issue. Once the device is attached to a network, as it would be in the instance referenced in this thread for WiFi Calling, then it scans even less often.
dc/dc said:
I don't want to argue, but that is not totally correct. Those scans are not constant, they are on a schedule, and generally have a negligible effect on battery life. They can have an impact if a user has attached their device to many networks and the device has a huge list through which to scan. Power users, I would hope, clean out their network list, making it essentially a non-issue. Once the device is attached to a network, as it would be in the instance referenced in this thread for WiFi Calling, then it scans even less often.
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I guess my phone is bad cause I am locked in on a great signal and if I put the phone down every 30 seconds phone does a scan even if I clear all the networks. When it scans it adds thems back and continues the scan.
BAD ASS NOTE 4