Related
I tested the following:
Turning 4G on in a full bar area and letting it stand idle for one hour.
I lost about 20% battery in one single hour.
The phone had the screen off, wifi off and all apps but the essential ones off.
On 3G i lost about 5%/hour.
4G is supposed to be an "always-on" service with such a battery drainage?
I was sure it was supposed to be a power efficient service, like WiFi or at least like 3G.
Note the phone also gets a little hot after one hour if being idle with 4G on.
I wonder if other people are seeing the same results?
clubtech said:
4G is supposed to be an "always-on" service with such a battery drainage? I was sure it was supposed to be a power efficient service, like WiFi or at least like 3G.
Click to expand...
Click to collapse
Ummmm...
Wow...
ummmm...
4g = bad for battery
OK...Thanks!
I really wanted someone else to test this and report back.
Maybe it is just my unit or the ROM that i am using?
clubtech said:
OK...Thanks!
I really wanted someone else to test this and report back.
Maybe it is just my unit or the ROM that i am using?
Click to expand...
Click to collapse
LoL sorry brotha' I was just messing around
You gotta admit though, you set yourself up for that one
In all seriousness, 4g is an absolute battery killer! ESPECIALLY if your in an area where you don't get good 4g signal.
If your in a good area and surrounded by 4g then the phone doesn't really have to work at all to keep the signal BUT if your in an area where there's not much 4g signal, like most of America, then it will destroy your battery life (and make your phone hot) because your phone keeps searching for it over and over which chews up the battery. I would ALWAYS keep 4g off unless your downloading something until the 4g becomes more expanded across America. Also download the app battery indicator and make sure you keep track of your battery temperature with it in the status bar. I never let my battery get above 99*F since that will cause permanent damage. In your first post you were talking about losing 20% in an hour while on 4g which would alot of sense since the phone (on 3g) is only slated to get 4-5 hours of talk time, with 4g on always searching for signal the 20% loss seems about right.
Sorry again for messing with you earlier
np.
I am with full 4g bar when testing, so it is not a signal issue.
Yeah, it's a huge battery drainer. I forgot I turned it on in town, took a nap and had 85% battery left, fell asleep and took a 2 hour nap, woke up and it was dead dead mofo dead.
So yeah, it's a battery killer.
Good thing you can barely use the main advertising feature of this phone.
roybotnik said:
Good thing you can barely use the main advertising feature of this phone.
Click to expand...
Click to collapse
LOL A+
stupid10char
Hi all,
Now I've not tried this myself however a friend of mine who recently got a DHD said he was lucky if the battery lasted a day on a full charge however by turning "Data roaming" off (even though he is not roaming) he is now getting anything between 2-3 days on one charge
Data roaming was turned off by default on mine and still the battery drained pretty quick.
Using data of any kind will affect the battery badly. Notes Traveler on my device is the cause of it needing charging every day.
Same as any phone, the more you disable the longer the battery will last.
If everything was implemented correctly by HTC, turning off Roaming should have no impact on battery life at all (provided you don't use Roaming).
I believe that your friend experienced the typical warm-up phase. For some (a lot?) people the battery life is terrible when they first use the DHD, but it gradually gets better.
Your friend probably attributes the increase of battery life to the disabled Roaming, while it is just a "natural" process.
I'm roaming all the time, and my battery is actually pretty good. If i don't use it much it can easily survive two days. My record is three days with light usage. (That was with the stock 1.72 ROM)
What is data roaming anyway???
Sent from my Desire HD using XDA App
Data roaming is set off by default. And data roaming controls data transfer when you are not on your home operator/network, i.e when traveling.
are your friend meant data connection?
MarkieSA said:
Hi all,
Now I've not tried this myself however a friend of mine who recently got a DHD said he was lucky if the battery lasted a day on a full charge however by turning "Data roaming" off (even though he is not roaming) he is now getting anything between 2-3 days on one charge
Click to expand...
Click to collapse
He probably means "3G" off? I've had mine since the end of October and got into the habit of charging the phone every night. But then wondered about the effects of turning off wifi and 3G as, currently, I'm at home most of the time and have a PC with 24" screen to play with. Anyhow, with 3G and wifi turned off most of the time I get 3 days or so from a charge. I haven't investigated turning just one or the other off as life's too short ....
HTH
Dave
PS: and someone will say, well what's the point of a smart phone if you're just using it like a dumb phone? Well, the "smart" bit here in this case is me ....
Yeah, 3G uses a bit, so the first thing i did was to disable it. No point for me using it actually, since it's WiFi all over the place here i live. If i need it, i'll simply enough just toggle it on.
Sent from my Desire HD using XDA Premium App
BazookaAce said:
Yeah, 3G uses a bit, so the first thing i did was to disable it. No point for me using it actually, since it's WiFi all over the place here i live. If i need it, i'll simply enough just toggle it on.
Sent from my Desire HD using XDA Premium App
Click to expand...
Click to collapse
You're roaming all the time and then in the next post you say that the first thing you did was to disable 3g... Are you just posting in order to follow others opinions or what?
And btw 3g doesn't actuality use much more power when compared to wifi, if you always use it somewhere where the signal is always poor then it's another thing.
Sent from my Desire HD using XDA App
dvhttn said:
He probably means "3G" off? I've had mine since the end of October and got into the habit of charging the phone every night. But then wondered about the effects of turning off wifi and 3G as, currently, I'm at home most of the time and have a PC with 24" screen to play with. Anyhow, with 3G and wifi turned off most of the time I get 3 days or so from a charge. I haven't investigated turning just one or the other off as life's too short ....
HTH
Dave
PS: and someone will say, well what's the point of a smart phone if you're just using it like a dumb phone? Well, the "smart" bit here in this case is me ....
Click to expand...
Click to collapse
If I meant 3G then that's what I would of said. So just to be clear, there is an option "Data Roaming" that when turned on will enable a data connection when you are in another country. My friend claims that while on his home network he has turned this option off and he has seen a big improvement on battery performance. If this is true or not I'm not sure, I just simply thought I would share his thoughts with everyone else.
I did this, once i remembered where it was and I got my old battery life back. So thats a bonus, not having to take my charger to work!
Vispe85
And btw 3g doesn't actuality use much more power when compared to wifi said:
Using System Panel graphs to monitor battery drain I'd concluded that 3G drains battery at about twice the rate compared to wifi.
Click to expand...
Click to collapse
Battery life estimates for the Thunderbolt are in the neighborhood of 4hrs due to Verizon's LTE 4G. There is no way to disable the battery draining 4G.
How would this affect our Xoom's? I think the general consensus is that the Xoom has "very good" battery performance but that's on 3G. Maybe it's not worth doing the free upgrade right away???
Just throwing that out there.
Snapdragon has never had good battery life to begin with.
You don't have to worry since the 4G upgrade won't happen until around June and that is only what is speculated. Assuming June is the time frame to send back your xoom, Verizon should be coming up with a solution the 4G battery drain problem.
A few 4G smartphones are coming out in april (Motorola Droid Bionic, Samsung Charge, LG Revolution) which should give Verizon more feedback to see if these new devices are also draining battery like crazy using 4G. The hope is that by June/July, Verizon should have pinpointed the problem and have a fix by then whether that is small or big as long as there is progress.
Keep in mind that HTC is not known for its great battery life. Hopefully the Droid Bionic coming out in April does well since that is the phone I am planning to get and switch from Sprint to Verizon.
atoy74 said:
Battery life estimates for the Thunderbolt are in the neighborhood of 4hrs due to Verizon's LTE 4G. There is no way to disable the battery draining 4G.
How would this affect our Xoom's? I think the general consensus is that the Xoom has "very good" battery performance but that's on 3G. Maybe it's not worth doing the free upgrade right away???
Just throwing that out there.
Click to expand...
Click to collapse
You can disable 4G threw an app called Network by Phillip Magelow. I have the Thunderbolt and 4G on it sucks the battery like no other. Plus, HTC is known for not having the best battery life (had an Eris and it sucked). Juice Defender and PowerMax have helped quite a bit.
I don't believe that 4G has much to do with the HTC Thunderbolts bad battery performance.
I have a HTC Desire HD, it doesn't have 4G and it's battery lasts maybe 4,5hrs of continuous use.
Wobblin30 said:
You can disable 4G threw an app called Network by Phillip Magelow. I have the Thunderbolt and 4G on it sucks the battery like no other. Plus, HTC is known for not having the best battery life (had an Eris and it sucked). Juice Defender and PowerMax have helped quite a bit.
Click to expand...
Click to collapse
Yeah, I figured that most people on XDA would figure out how to disable 4G but I was mainly considering the avg Joe.
Let's see if Moto/Verizon figure it out. To date I'm a little surprised we haven't seem more OTA updates.
I don't know that this is unique to LTE, either. I know that Wimax on my Sprint Epic also kills the battery life.
However, I'd imagine the impact on the Xoom would be less visible, since the Xoom has such better battery life to begin with.
wynand32 said:
I don't know that this is unique to LTE, either. I know that Wimax on my Sprint Epic also kills the battery life.
However, I'd imagine the impact on the Xoom would be less visible, since the Xoom has such better battery life to begin with.
Click to expand...
Click to collapse
Yes, all 4G technologies are battery hogs right now. The difference is you can disable Wimax and live on 3G if you wanted. That's what I do with my Evo. I treat Wimax just like wifi...I enable it when needed. LTE (as of now) cannot be easily disabled.
As for impact on the Xoom, I'd tend to agree with you. BUT, if you're device drops for 8hrs of constant use to 6hrs, I'm sure many people would complain.
atoy74 said:
Yes, all 4G technologies are battery hogs right now. The difference is you can disable Wimax and live on 3G if you wanted. That's what I do with my Evo. I treat Wimax just like wifi...I enable it when needed. LTE (as of now) cannot be easily disabled.
As for impact on the Xoom, I'd tend to agree with you. BUT, if you're device drops for 8hrs of constant use to 6hrs, I'm sure many people would complain.
Click to expand...
Click to collapse
There is an app that turns it off with a push of a button, how much easier do you want it
Well, there's a few factors here that should be taken into consideration before getting your panties in a twist...
First, you can turn the 4G radio on or off on the TB, either by using an app or dialing into the test menu. I have no doubt the same will be possible on the Xoom. Second, VZ's LTE coverage isn't everywhere, so it may be a moot point for some folks anyway. Third, even if LTE is available in your area, some may not care to send their Xoom to Moto for the upgrade, even if it is free. Example- I hardly use the 4G radio on my EVO, though it was a big sellling point for me when I first acquired it. The only time I really use it is when browsing YouTube, or for wireless tethering (but of course YMMV).
Either way, nothing to get 'em in a twist over, eh?
It is known fact that faster modem consumes more power. Bandwidth is directly translated into power requirement.
However, because of larger battery modem energy consumption for Xoom may be only 5-10% of total energy available in the battery while that ratio might be 15-25% for the Thunderbolt having smaller battery.
I wouldn't worry about it for Xoom. Besides you can save it switching to Geico (or 3G).
Keep in mind that its not just the 4g radio that's draining the thunderbolts battery. It has a huge screen, fast processor, and a tiny tiny tiny battery (around 1250mAh?). Case in point the Evo 4g had crappy battery life even staying on 3g with a larger battery than the TB.
From what I can tell the screen is by and large the hugest drain on the Xooms battery, LTE will of course have more drain, but it won't affect it as much as it does on a phone I don't think.
I have read some disturbing reviews about the Thunderbolt which is a 4G LTE Verizon phone. Although the phone itself sounds great, what concerns me are reports that the battery life is around 4-5 hours with 4G turned on.
So my question and concern is, once we upgrade the Xoom to 4G when available, are we going to be victims of the same poor battery life with 4G?
You're not required to have data connection on all the time. A toggle switch widget can fix the problem. Just turns it on when needed. But yeah I do agree that 4g and 3g will drain the battery.
Sent from my Nexus One using XDA App
I already keep my Xoom on airplane mode to disable all radios that I don't specifically activate. Seems to help with battery life. I downloaded some toggle Widgets to shortcut all the steps.
[sent with Xooming Android technology]
wang1404 said:
You're not required to have data connection on all the time. A toggle switch widget can fix the problem. Just turns it on when needed. But yeah I do agree that 4g and 3g will drain the battery.
Sent from my Nexus One using XDA App
Click to expand...
Click to collapse
That is not really a solution. Currently with my Xoom, I can be on Wifi at home and when I am out, 3G kicks in. I do not want to toggle a widget when I need data (which is always) as I am sure most other people will not want to do. My battery life is totally acceptable currently with 3G and no toggling on/off. So will the 4G upgrade cause the battery life to be cut in half or worse?
keitht said:
That is not really a solution. Currently with my Xoom, I can be on Wifi at home and when I am out, 3G kicks in. I do not want to toggle a widget when I need data (which is always) as I am sure most other people will not want to do. My battery life is totally acceptable currently with 3G and no toggling on/off. So will the 4G upgrade cause the battery life to be cut in half or worse?
Click to expand...
Click to collapse
I seriously doubt 4g will be much (if any) worse than 3g is now. The only way would be that you are on it more and keeping the screen on for longer times because it will RULE! lol
ghoticov said:
I seriously doubt 4g will be much (if any) worse than 3g is now. The only way would be that you are on it more and keeping the screen on for longer times because it will RULE! lol
Click to expand...
Click to collapse
Just debating here but why do you think that? Why would Thunderbolt have a 4-5 hour battery life using 4G? You think that poor life is not 4G LTE related? And they have the luxury of swapping batteries which we cannot do with the Xoom.
I don't know how closely it is to sprint's 4g, but enabling 4g on my evo is a battery killer too. the good thing is that you can toggle 4g off and run in 3G mode. no need to disable data completely
madsquabbles said:
I don't know how closely it is to sprint's 4g, but enabling 4g on my evo is a battery killer too. the good thing is that you can toggle 4g off and run in 3G mode. no need to disable data completely
Click to expand...
Click to collapse
That begs the question,why get 4g if you have to manage it manually like that?
keitht said:
That begs the question,why get 4g if you have to manage it manually like that?
Click to expand...
Click to collapse
Keep in mind, that the 4g upgrade will be OPTIONAL and if you are seriously debating whether the upgrade will be worth it or not, then simply don't send it in for the upgrade! The less people to send it in (like you), would in turn mean faster return time for my upgrade! I personally don't give a damn about having to click a toggle switch when I want to download at crazy fast speeds!
Just my .02
I can also guarantee you that 4g will have a pretty noticeable impact on battery life. And to be perfectly honest with you, the HTC Thunderbolt (stock), even with 4g turned off, still has absolutely horrible battery life.
Instien said:
Keep in mind, that the 4g upgrade will be OPTIONAL and if you are seriously debating whether the upgrade will be worth it or not, then simply don't send it in for the upgrade! The less people to send it in (like you), would in turn mean faster return time for my upgrade! I personally don't give a damn about having to click a toggle switch when I want to download at crazy fast speeds!
Just my .02
I can also guarantee you that 4g will have a pretty noticeable impact on battery life. And to be perfectly honest with you, the HTC Thunderbolt (stock), even with 4g turned off, still has absolutely horrible battery life.
Click to expand...
Click to collapse
Your response is very defensive and that is not the purpose of my questions. I am looking for meaningful conversation regarding the possibity that a 4g upgrade will significanty reduce battery life on the Xoom. All speculation but something to talk about.
So what I can gather is more or less around what everyone says. Get your 4g upgrade but don't turn it on and stick to 3g unless you feel you need the speed bump. So nothing will change except you know you have your turbo button-widget (yes old school) available.
That is unless it will be stuck on 4g at all times but looks like that is a feature that is toggled by today's hardware not permanent yet due to battery capacities.
Sent from my DROID2 GLOBAL using XDA App
foreverinpanama said:
So what I can gather is more or less around what everyone says. Get your 4g upgrade but don't turn it on and stick to 3g unless you feel you need the speed bump. So nothing will change except you know you have your turbo button-widget (yes old school) available.
That is unless it will be stuck on 4g at all times but looks like that is a feature that is toggled by today's hardware not permanent yet due to battery capacities.
Sent from my DROID2 GLOBAL using XDA App
Click to expand...
Click to collapse
I am not one to complain without reason but I certainly hope this is not the case.
MY plan is to remove the dummy card right before shipping it out so I can put it back if I am unhappy with the battery life.
In theory, 4g should use less battery, not more. 3g chipset firmware is highly optimized, though, due to the technology having been around for a while.
It may be a few firmware revisions to hit minimum use for 4g, but it shouldn't use dramatically more than 3g.
The answer for this thread is simple. Yes 4G will use more battery power, that's the short end of the stick. If you live in a 4G area and don't need the speed boost and would rather save battery there will be a way to disable 4G and use 3G just like with the thunderbolt or evo
Sent from my Evo using Tapatalk
It isn't speculation. The evo has a long track record with 4g of a very similar type. 4g will be a battery hog. But I never use it on my evo unless I'm tethered or streaming. Otherwise I find 3g more than enough for most tasks. I will send my xoom in for the upgrade. But I don't activate it. I tether it to my evo. But yes it will be a battery hog. Whenever you use cutting edge technology they tends to develop the speed and reliability first and worry about power consumption last.
I work for Verizon and honestly rarely hear many complaints about the battery life on the Thunderbolt. Many of my customers get awesome battery life and we have 4g in my area. The LTE radio does consume more battery than 3g especially if you are downloading a large file or something. Another thing to consider is the Thunderbolt is like a big brother to the Incredible and that phone had HORRIBLE battery life. The Thunderbolt has a much larger screen, 4g, and does not have a very large battery. I don't see 4g having a huge impact for most people but for those that feel it helps there will always be a toggle widget or “turbo button” like someone said earlier. I will definitely be sending mine in right away...
Sent from my Xoom using Tapatalk
Ferradinho said:
I work for Verizon and honestly rarely hear many complaints about the battery life on the Thunderbolt. Many of my customers get awesome battery life and we have 4g in my area. The LTE radio does consume more battery than 3g especially if you are downloading a large file or something. Another thing to consider is the Thunderbolt is like a big brother to the Incredible and that phone had HORRIBLE battery life. The Thunderbolt has a much larger screen, 4g, and does not have a very large battery. I don't see 4g having a huge impact for most people but for those that feel it helps there will always be a toggle widget or “turbo button” like someone said earlier. I will definitely be sending mine in right away...
Sent from my Xoom using Tapatalk
Click to expand...
Click to collapse
Sorry but you either live in a nice vacuum or a bubble or a cocoon because EVERYONE I know with this phone (friends, foes and customers too) loves it to death but hates the battery life with 4g on, and by default there's no way to turn off 4g when not needed.
Had to root for some friends and show them the 4g LTE off widget that came out the other day. At least that helps.
As for the Xoom, even if you might not want to use 4g or sign up, still send it in to be done. Definitely will help with resale value down the road.
my friend has the thunderbolt and the battery sucks, and he isn't in a 4g area. Mr verizon rep is on a feel good drug, or something.
keitht said:
I have read some disturbing reviews about the Thunderbolt which is a 4G LTE Verizon phone. Although the phone itself sounds great, what concerns me are reports that the battery life is around 4-5 hours with 4G turned on.
So my question and concern is, once we upgrade the Xoom to 4G when available, are we going to be victims of the same poor battery life with 4G?
Click to expand...
Click to collapse
It's going to drain more then the cdma radio does, at least until the technology and the software support behind it is more mature. But that is to be expected with bleeding technology.
Also remember that part of the battery issues on the TB comes from the fact that people use it alot more then previous phones. Streaming data is alot more power intensive then just the comparable occasional usage their previous device saw. I have a TB and if I use the snot out of it then yeah I can kill the battery in a couple of hours. However if I am busy and use it like I used my D2 or DX then I can get through the day without having to recharge.
Also you can turn just the LTE radio off when you are not using it if you are that concerned
Sent from my Xoom using Tapatalk
Got my LTE upgrade done on my Xoom and now the battery is a joke. I went into settings and disabled the LTE connection, so that now 3g is only used. I also turn wifi on when at home. Currently my Xoom is draining 4ish% per hour while in standby. That means this damn thing won't last a day just sitting there, locked, with no screen on. In Honeycomb 3.0 and 3.1 I could get a days of use with 4-5 hours of screen on time and about 22-26 hours of total unplugged time. Now, under 3.2.2 my battery is totally dead after 18 hours of unplugged time with around 1-1.5 hours of screen use. This is virtually unuseable for taking notes in graduate school after work, when being close to an outlet is impossible.
Any ideas as to what's going on? Tried using Watch Dog and System Panel to see if any apps were going nuts with random CPU usage or RAM usage and everything seems to be in-check in terms of system resource usage. Considering I have 4g totally turned off and wifi enabled when I'm in range of wifi (most of the day) I don't have a clue where this power drain is coming from. Any assistance is highly appreciated given how much I rely on my Xoom for day-to-day use. 3.2.2 seems to have killed it for me.
Please help! Will try any suggestions.
Thanks.
Sent from my Xoom using xda premium
Have you tried disabling mobile data entirely? When I'm in wifi, I disable the cellular connection but haven't performed any in-depth trials on battery life.
"Settings" > "Wireless & networks" > "Mobile networks" > deselect "Data enabled"
Its not just you, mine is the same way it sucks big time. There really isn't anything that I've found to fix it.
I loved how I used to be able more than a day out of a charge...
Anybody have any ideas? Maybe undervolt kernel???
Sent from my Xoom using xda premium
I just received my zoom Lte upgrade and haven't had any battery issues.
PengLord said:
Have you tried disabling mobile data entirely? When I'm in wifi, I disable the cellular connection but haven't performed any in-depth trials on battery life.
"Settings" > "Wireless & networks" > "Mobile networks" > deselect "Data enabled"
Click to expand...
Click to collapse
I haven't but this isn't feasable. I use mobile internet for everything and even take notes and such on Google docs. Even though I'm near wifi for most of a given day, I shouldn't be bothered by manually turning mobile data on and off just to have power- mobile data should be mostly killed when wifi is active. That's how this Xoom worked before. A tablet without internet is nothing more than a paperweight to me. 2 classmates with LTE upgraded Xooms are having identical problems. No fixes found yet. Any other suggestions? This battery life is really, REALLY bad.
Tried going a factory reset and battery life is the same, horrid short, running nothing but stock apps.
Any other suggestions?
Sent from my Xoom using xda premium
wiredup said:
I just received my zoom Lte upgrade and haven't had any battery issues.
Click to expand...
Click to collapse
How long ago did you receive it? The degraded battery seems to have started shortly after the first initial charge after the LTE install.
Sent from my Xoom using xda premium
Same problem here, but I have the mobile network completely turned off and it still does this! Even with the switch to CDMA only!
I will keep reading this thread (only read the about half the posts before posting) so hopefully a solution will show up. But you're not alone in the horrible battery life post LTE upgrade!
I've had my Xoom back since last Wed.
No higher battery drain than previously.
I'm on wifi 90% of the time in home and office.
Yesterday I was all over north San Diego county using 4g. Got home with 60% charge which is about the same as for a prior trip with 3g.
Put your xoom back the way it was. The new hardware sucks the battery a little more. Buy a thunderbolt and then say the xoom battery life sucks. Never charged it during the day before the upgrade. Oh well, that's the price if 4g.
Sent from my ADR6400L using xda premium
Err0xx said:
Got my LTE upgrade done on my Xoom and now the battery is a joke. I went into settings and disabled the LTE connection, so that now 3g is only used. I also turn wifi on when at home. Currently my Xoom is draining 4ish% per hour while in standby. That means this damn thing won't last a day just sitting there, locked, with no screen on. In Honeycomb 3.0 and 3.1 I could get a days of use with 4-5 hours of screen on time and about 22-26 hours of total unplugged time. Now, under 3.2.2 my battery is totally dead after 18 hours of unplugged time with around 1-1.5 hours of screen use. This is virtually unuseable for taking notes in graduate school after work, when being close to an outlet is impossible.
Any ideas as to what's going on? Tried using Watch Dog and System Panel to see if any apps were going nuts with random CPU usage or RAM usage and everything seems to be in-check in terms of system resource usage. Considering I have 4g totally turned off and wifi enabled when I'm in range of wifi (most of the day) I don't have a clue where this power drain is coming from. Any assistance is highly appreciated given how much I rely on my Xoom for day-to-day use. 3.2.2 seems to have killed it for me.
Please help! Will try any suggestions.
Thanks.
Sent from my Xoom using xda premium
Click to expand...
Click to collapse
Download Auto Airplane Mode by DON from the market. It will help BIG TIME!! It does just what the title states, it puts the Xoom into airplane mode automatically as soon as the screen goes off. When you turn the screen back it, the data comes right back in 3 -4 seconds and you're good to go!
Also, you don't have to uncheck any settings or turn 4G off.
Update: Mobile data completely turned off, on wifi only with Xoom sitting about 4 feet from router all morning, so wifi signal was strong. This is the first time I've used the device today. Unplugged at 330am my time, its now 130pm. Device battery is at 60%. 10 hours and 40% of battery gone. That's with mobile data 100% disabled, wifi only- can't even get the Xoom to standby for a full day now. At this current drain rate, it would go from 100% to 0% in one day with no mobile data usage, no screen on time and no usage other than syncing Gmail every 2 hours.
Brother who commented above: Thunderbolt will standby for a full day with no screen on time on wifi only and it has under 1/3 the Xooms battery capacity. I should know- my wife has one and it now outlasts my Xoom. That should not be the case.
From my understanding the Xoom has two 3225ish batteries set up in a sequence. My battery life actually seems to be about half of what it was before. Is it possible that one of the two was disconnected during the LTE radio installation and not properly reconnected? Wasn't sure of the details of how the batteries were set up, but if the Xoom could function with the second battery not working, seems like that would precisely half battery life. Anyone familiar with exactly what had to be done internally to upgrade the radio? Looking at the ifixit teardown of the Xoom, the batteries cover the whole backside- looks impossible to do any internal work on this thing without removing them. Any thoughts?
Cheers,
Landon
Sent from my Xoom using xda premium
Same here. Can't get a full day out of it. Hope a fix will be comming up.
Thunderbolt got the he-man battery and modded my otter box to fit. The xoom battery has entered the battery hog realm after the lte radio. As far as I can tell the radio is cdma/lte together. And it uses power even if wifi is on and data off. It's what I would call big brother watcher. Even if your not connected the radio is txing and rxing something. You know it's lojacked!
Sent from my ADR6400L using xda premium
Interestingly enough, removing the LTE SIM card and using wifi only made no improvement to battery life. I'm assuming the new radio is running at 100% all the time without throttling down, even if absolutely no connection exists or there is a string of faulty battery reinstalls in which only one battery is providing power. That might explain why some people seem to have greater battery issues than others.
Landon
Sent from my Cherryπ 0.8 Atrix. Get yo' slice on.
im glad im not the only one with this problem! its pathetic! im taking my charging cable from my dock with me to work so ill have at least some battery life when i take the train home in the evenings
i to am glad that I'm not alone with this either. I use to charge mine every 4 days with no wifi on and almost no use. Now I get about a day with no use. I mainly use it for web searching and dungeon defenders when I'm home. Horrid battery life for doing nothing. Luckly I mainly only use it at home and am almost always on the dock I got from motor from the upgrade. I use about 4% an hour also with nothing on. Mine is completely stock with no root.
Yahoo mine is stock with absolutely no root or other mods. I guess they knew about the pissy battery life and that's why they gave a free dock. Lol. Still trying to find exactly what's killing the battery. LTE does drain a lot of juice but as I've stated before my wife has a Thunderbolt and per mW of battery power, the thunderbolt is more efficient and that's not saying much. It can standby for over a day with no use fine and it has roughly a little less than 1/3 the Xoom battery capacity. Something isn't right. Its not supposed to be this bad. Anyone filed a complaint/tech request with moto/Verizon? I think its something that we should all do and report what they say here. I have a feeling more and more people are gonna have this issue if they do the upgrade. Maybe if enough of us make some noise, something will be done.
Landon
Sent from my Xoom using xda premium
Maybe it's not the radio.
3.2.2 may have some kind of interaction with something you guys were running that's causing wake locks to get stuck
Did you look at Settings:About Tablet: Battery Use ?
(tap on the histogram at the top for another, see if the time spent awake is solid or different from screen on)
I tested this on mine, with the mobile data disabled and lost about 1% battery every hour, this is on par with the performance I had pre-upgrade.
Rooted, stock kernel
I realize it does not help you but you might look somewhere other than the wireless radio for the problem. I unplugged my upgraded Xoom yesterday morning around 8:30 AM. It is now 8:20 AM and my battery is at 66%. I was on 4G for about 2-3 hours yesterday, the rest of the time on wifi. I check and respond to my mail on the Xoom so it saw some use yesterday, though not as much as I normally do.