Database Develop

Battery usage - typical Display values

Given that the display is widely regarded as one of the two biggest drawers of power/battery life on the N1 (the other being the radio/cell standby), and given that my battery usage breakdown *always* has Display at the top (by a large margin), I thought it might be interesting to see what other people's Display usage hovers around so we can build up a "operating range"...
(apologies if anyone has done this before, I did a few searches but nothing significant came up - please point me to previous posts if it has already been covered)

not exactly seeing an option for a Poll...would recommend setting one up before we get 100s of posts to comb through

bloke226 said:
not exactly seeing an option for a Poll...would recommend setting one up before we get 100s of posts to comb through
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you got there darn quick - cheers for voting though!

it depends on what rom u have. my battery usage for the display was significantly different from cyanogen to desire rom.

nellyspageli said:
it depends on what rom u have. my battery usage for the display was significantly different from cyanogen to desire rom.
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that was one of the things that prompted me to do the poll, as I'm familiar with a Desire with Sense that reports around 20%
unfortunately I don't think i can also capture the ROM here (kernel would have been nice too), but I wanted to - and think you may have a point...

Moved as not Android Dev.

Yeah, unfortunately if you are getting a low display usage if you use it a lot means that the rest of your system is really hogging the power. Cyanogenmod with a high display usage is great because it means the rest of the system is running very efficiently.

Clarkster said:
Yeah, unfortunately if you are getting a low display usage if you use it a lot means that the rest of your system is really hogging the power. Cyanogenmod with a high display usage is great because it means the rest of the system is running very efficiently.
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It could mean a few different things, not just that. This is not a very scientific poll, sorry.

Thanks for this Poll. I was beginning to think that maybe my Nexus One was defective because the screen used so much of the battery. Unlike my HTC Magic, where the Cell Standby/Phone Idle was king.

The screen is supposed to be the highest drain. That means that the OS and all your apps are very efficient and not out of control.

just FYI, it seems on the bleeding edge kernels that a couple of kernel authors are producing at the moment, that Display usage is down. I am typically seeing no more than 40% in the stats now (down from around 60%) - will update once the kernel dust settles!

this poll isnt really effective, i have seen my screen usage from 10% all the way up to 89%, from what ive seen the percentage is based off of how long since the phone has been unplugged from a charger to the amount of time you were actually using it(had the screen on)
i can run my battery life into the ground in 6 hours or i can make it last 34 hours(max from full charge to shut down with all the fancy stuff turned off)

How much battery does your display use?

Dear Nexus One users!
I'm trying to gather some data for the following thread: http://forum.xda-developers.com/showthread.php?t=753382
I have a feeling that HTC has tampered with the Desire's power usage statistics in order to make the AMOLED screen seem more efficient.
As far as I've heard (only asked two Nexus One owners so far), the Nexus's display usage is about on par with the Desire's vanilla ROMs, which leaves me to believe that the vanilla ROMs are accurate, and the HTC Sense ROMs are the ones with the problem.
I hope you can help me gather some stats
Thanks in advance!
-edit- Forgot to say: The statistics I'm talking about can be found in Settings=>About Phone=>Battery Use, and I'm interested in the statistics after a day of reasonable to heavy use (web browsing, messaging, phone calls etc.).

It's usually in the 61-80% range even with heavy use. I have to admit that I run the screen on full brightness all the time though, so that can skew the results a little.

Thanks for all the votes so far guys!
Looks like I was right

Getting some good data here... keep it up, thanks!

just thought i would add... (hopefully not too off topic) the HTC Desire (the new SLCD models), the Display only uses like <10%, seems they weren't lying about the battery saving part (this is based on what I've seen on my friend's Desire)
anyways my AMOLED Nexus one is in the 60-70% range and I'm usually in Automatic brightness mode

kwazi said:
just thought i would add... (hopefully not too off topic) the HTC Desire (the new SLCD models), the Display only uses like <10%, seems they weren't lying about the battery saving part (this is based on what I've seen on my friend's Desire)
anyways my AMOLED Nexus one is in the 60-70% range and I'm usually in Automatic brightness mode
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Don't allow yourself to be fooled - AMOLED Desires also often use less than 10% of the battery according to HTC ROMs... which is precisely why I think it's bull****.
Hell, the day before yesterday I kept my display on nearly the whole day, just to test the new power consumption stats (using OpenDesire, and as of 3.1.0 the power consumption statistics have been changed to give pretty much the same results as Sense ROMs) - result: about 10 hours of total battery life (from a full charge!), 6 of which had the display running. Now guess what the new Sense-style battery consumption measurements told me? Supposedly, even though my display had been on all day, it only used 13% of the total battery.
So don't worry - I don't think it's true that your phone uses so much more power - but rather, that HTC has somehow screwed up the power consumption statistics in their Sense ROMs, and the screen is using much more power than they're showing.
And you're not off topic at all. You're a perfect example for someone confused by the discrepancies in power usage statistics. They're not logical, and they're leading you to believe that your AMOLED diplay is using a lot more power than the new sLCD displays in Desires, as well as the AMOLED displays in the older Desires.

My display is always up around 80% of my total use. Everyday its like that. And that's the way it should be unless your device sleeps all day with no use.
When doing your comparison, you also need to post your display-on time, and your total time since unplugged. These are in the same place as your percentages. This way we know the ratio that The display was used and how long the device was unplugged. Otherwise I could post a number but without a reference point its meaningless. What if my screen never turned on once? That certainly skews the result.

RogerPodacter said:
My display is always up around 80% of my total use. Everyday its like that. And that's the way it should be unless your device sleeps all day with no use.
When doing your comparison, you also need to post your display-on time, and your total time since unplugged. These are in the same place as your percentages. This way we know the ratio that The display was used and how long the device was unplugged. Otherwise I could post a number but without a reference point its meaningless. What if my screen never turned on once? That certainly skews the result.
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Click to collapse
Theoretically you're right of course. However, so far the discrepancies are so immense that I don't think that's even necessary. Leaving the display on 100% of the time on a Sense ROM doesn't even allow you to crack 20% battery used by the display... Using the display for an hour on the Nexus or an AOSP Desire ROM, gives you at least 40% battery used by the display at the end of the day. Unless someone really keeps their phone off the ENTIRE time, I don't think the clarification is even necessary...

Hello everyone!
Thanks for the useful data. After continued testing by myself and a few other interested people (namely th3, who provided the idea for disproval of HTC's Sense battery use statistics once and for all, and Andycted, who has been providing many useful statistics which helped us get a better idea of general power consumption on the Desire), I've entered the issue on the Android Issues tracker.
You can view the issue here, and feel free to comment and/or star the issue to show your support, as it concerns all Android users. The problem may only be present on HTC Sense, but how will you know if future devices are reporting battery usage correctly if the statistics are so easily tampered with?
Thank you again for your help, support, and very helpful and constructive criticism.

Mine is always between 45 and 55 %, nearly stock FRF91 and minimum brightness

Haha, a friend of mine that just got the SLCD Desire was claiming his screen wasn't burning through the power like my n1 seems to. I guess it's unfortunate that it isn't the case.

I'd wager the SLCD really does use a lot less power when displaying bright colors, especially like white web page backgrounds... but even if your buddy spends his whole day looking at bright web pages (nothing with dark backgrounds), the battery usage of his display should be at the most 10% lower than yours

bemymonkey said:
I'd wager the SLCD really does use a lot less power when displaying bright colors, especially like white web page backgrounds... but even if your buddy spends his whole day looking at bright web pages (nothing with dark backgrounds), the battery usage of his display should be at the most 10% lower than yours
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Click to collapse
I totally read your post wrong, sorry.
We have figures for the approximate power drain of the AMOLED screen (155mA black, 485mA white) so where are the figures for the SLCD?

ChronoReverse said:
I totally read your post wrong, sorry.
We have figures for the approximate power drain of the AMOLED screen (155mA black, 485mA white) so where are the figures for the SLCD?
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Click to collapse
Back a few years ago (th3 posted a PDF from a company that manufactures AMOLED screens), the figures were around 200-250mW for the LCD (on all screen colors), while an AMOLED of the same size drew 700-something mW on a white screen. Obviously older screens, and smaller in size, but should be comparable...
I'll see if I can dig it up again...

Here it is:
http://data.4dsystems.com.au/downloads/micro-OLED/Docs/4D_AMOLED_Presentation.pdf

we need to get some desire users with the SLCD screen to install the current power draw widget to their homescreen and give us some numbers. or just pull them from the dmesg log. at this point i have pretty good numbers for the nexus amoled screen, and like said above black typically around 140 mA and white 350 mA, but those both a lot of the time go much lower and higher, respectively.

RogerPodacter said:
we need to get some desire users with the SLCD screen to install the current power draw widget to their homescreen and give us some numbers. or just pull them from the dmesg log. at this point i have pretty good numbers for the nexus amoled screen, and like said above black typically around 140 mA and white 350 mA, but those both a lot of the time go much lower and higher, respectively.
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I'll see if I can get said friend to do that then lol.

ChronoReverse said:
I'll see if I can get said friend to do that then lol.
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Please! I'd love to see some exact figures too, if possible with all radios off and in idle. Measurements both on minimum and max brightness preferred

bemymonkey said:
Dear Nexus One users!
I'm trying to gather some data for the following thread: http://forum.xda-developers.com/showthread.php?t=753382
I have a feeling that HTC has tampered with the Desire's power usage statistics in order to make the AMOLED screen seem more efficient.
As far as I've heard (only asked two Nexus One owners so far), the Nexus's display usage is about on par with the Desire's vanilla ROMs, which leaves me to believe that the vanilla ROMs are accurate, and the HTC Sense ROMs are the ones with the problem.
I hope you can help me gather some stats
Thanks in advance!
-edit- Forgot to say: The statistics I'm talking about can be found in Settings=>About Phone=>Battery Use, and I'm interested in the statistics after a day of reasonable to heavy use (web browsing, messaging, phone calls etc.).
Click to expand...
Click to collapse
Nah, it's just that Sense uses more battery, therefore the screen doesn't use as much in comparison

Root v ROM - Battery Life

I rooted my Vivid (AT&T) a long while back, flashed a custom kernel (Faux 007) and tweaked it a fair bit for a cleaner look and better battery life. It helped. Some.
I have work apps installed that are a pain to get authorized and reinstalled, so I'd rather not go through the trouble again if I don't have to. However, I would like to get better battery life out of my phone if I could.
So, anyone have any experience on battery life of root vs ROM? Any particular ROMs/kernels for fantastic battery life? I'm not using sense widgets so doesn't matter if it's sense or stock UI.
TIA

WCX ROM FTW google wcx illuminati and register on his forum. you need 10 posts to download tho

XxSHaDoWxSLaYeRxX said:
WCX ROM FTW google wcx illuminati and register on his forum. you need 10 posts to download tho
Click to expand...
Click to collapse
Not to get off topic here, but is WCX a sense based ROM?
Sent from my De-Sensed HTC Vivid using xda app-developers app

Personally, the Holics ROM 1.3 with Holics 0730 kernel has worked great for me.
SetCPU to control CPU frequency: Max 1.5GHZ, min 350MHZ.
I used the Intellidemand governor, and noop scheduler.
I do NOT use task killers.
I use Lux Auto Brightness to control my screen brightness (highly recommend it!).
I use the APN Switch widget to turn my APN off when not in use (basically always unless I'm sending/receiving an MMS)
I close my apps when I'm done with them.
There is also an app called Llama that you can use to control all kinds of things, like turning wifi on and off based on the time of day and/or your location, etc. It's pretty cool, but I don't use it presently. Here are two examples of my battery life, with moderate usage.

Then ya'll will hate this one. I'm running wahjee's 1.6 de-sensed ROM with everything on. Live wallpapers, notifications, widgets galore and a lot of use...
Sent from my De-Sensed HTC Vivid using xda app-developers app

envygreen said:
I rooted my Vivid (AT&T) a long while back, flashed a custom kernel (Faux 007) and tweaked it a fair bit for a cleaner look and better battery life. It helped. Some.
I have work apps installed that are a pain to get authorized and reinstalled, so I'd rather not go through the trouble again if I don't have to. However, I would like to get better battery life out of my phone if I could.
So, anyone have any experience on battery life of root vs ROM? Any particular ROMs/kernels for fantastic battery life? I'm not using sense widgets so doesn't matter if it's sense or stock UI.
TIA
Click to expand...
Click to collapse
with rom and battery life it is easier to try the different ones for yourself to see which gives you better life, each device and person will have different experiences. I had good experiences with all of them but what worked good for me may not for you.

ronnie498 said:
with rom and battery life it is easier to try the different ones for yourself to see which gives you better life, each device and person will have different experiences. I had good experiences with all of them but what worked good for me may not for you.
Click to expand...
Click to collapse
Agreed. I think more than anything it comes down to two things: your screen-on time, and your cell-searching time. If you are in a low-signal area a lot (like the woods or a basement, or worse - a basement in the woods (!!!)) you can expect to get poor battery life on just about anything. Also, if you're playing angry birds every waking moment, you're going to bleed your batter dry. Simple as that.
If you live in a good signal area, and have screen brightness as low as possible, you're already in a good spot. Any tweaks you can do might help, but probably not by 12+ hours.

ess.boyer said:
Agreed. I think more than anything it comes down to two things: your screen-on time, and your cell-searching time. If you are in a low-signal area a lot (like the woods or a basement, or worse - a basement in the woods (!!!)) you can expect to get poor battery life on just about anything. Also, if you're playing angry birds every waking moment, you're going to bleed your batter dry. Simple as that.
If you live in a good signal area, and have screen brightness as low as possible, you're already in a good spot. Any tweaks you can do might help, but probably not by 12+ hours.
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You know, that's probably my number one issue, I just hadn't thought about it that way. On weekends, I easily last the whole day and have 40% or more left. At work, it's dying fast and often unless I plug it in while I'm at my desk. I'm away from windows and 11 floors up, so the signal is pretty poor.
In normal situations, the battery life does seem improved with the kernel I am using and the rooted/cleaned up bloat. But since I spend most of my time sitting in this chair with almost no signal, I notice that the most.
And as for trying out other ROMS, well we'll see when my contract is up and I pick up another phone so I can tinker to my hearts content while keeping a pristine phone for work. I just don't have the leeway to bork my phone right now.

envygreen said:
I rooted my Vivid (AT&T) a long while back, flashed a custom kernel (Faux 007) and tweaked it a fair bit for a cleaner look and better battery life. It helped. Some.
I have work apps installed that are a pain to get authorized and reinstalled, so I'd rather not go through the trouble again if I don't have to. However, I would like to get better battery life out of my phone if I could.
So, anyone have any experience on battery life of root vs ROM? Any particular ROMs/kernels for fantastic battery life? I'm not using sense widgets so doesn't matter if it's sense or stock UI.
TIA
Click to expand...
Click to collapse
When you were using faux's kernel did u remember to rename "mpdecision" and "thermald" to "mpdecison_dis" and "thermald_dis"? Cause that would also be why you didnt really see a bigger difference in performance with his kernel.

gotzaDroid said:
Then ya'll will hate this one. I'm running wahjee's 1.6 de-sensed ROM with everything on. Live wallpapers, notifications, widgets galore and a lot of use...
View attachment 1406395
Sent from my De-Sensed HTC Vivid using xda app-developers app
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Click to collapse
PACman ROM. this thread is sorta old, but yeah

Performance and Battery in JB.

I was wondering. I looked everywhere and cannot find exact confirmation or Review. The 4.1.2 update is coming soon for the Optimus 4X and I read on 2-3 blogs that it'll apparently improve battery life. Is that true? Has anyone tried that themselves? From what I observe on my 4X that there are a couple of apps running in the system sucking up the battery. Will the future update fix this to extend its life? Sorry if this question was asked before and/or I've made a double post.
Sent from LG-P880

I'm an average user... Not much into games but I message a lot and play on YouTube use wifi and phone regularly... This is much improved for me over 10x

One day+?! Holy-- yeah that's surely an improvement to what I'm experiencing now. Is the phone running smoother as these blogs say? Any crashes/freezes or its a perfect charm. I'd just want to know what to expect...
Also, I've noticed that my phone tends to warm up from... almost everything. Is it still happening?
Edit: Sorry about this post... I rushed on asking this question without realizing that there's a Q&A section.. is there anyway to move the post? If not then I'll delete it.
Sent from LG-P880

mine (first half is @ night i was checking if my phone was in deep sleep or not). I disabled many services that i dont use (MLT, lg smart, talk etc )

Disabled them as in uninstalled them? And wow.. yeah that's surely a lot better than now. Better then my last phone.
Sent from my LG 4X.

My battery is still the same as that in v10f. I get about 3.5h of screen on time( mainly web browsing ) to reach 10%

How is the overall performance?
Sent from my LG 4X.

Battery life on ics is still better. Anyway, jb is leak version only
Sent from my LG-P880 using xda premium

I know it's leak only. Hopefully the full release will be better.
Sent from my LG 4X.

stormysea94 said:
My battery is still the same as that in v10f. I get about 3.5h of screen on time( mainly web browsing ) to reach 10%
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thank you finaly someone who understands what part of battery life tests are important.

hutjeflut said:
thank you finaly someone who understands what part of battery life tests are important.
Click to expand...
Click to collapse
Depends on what you think is important. My phone is my "phone". I expect it to be as such. I can't imagine Web browsing for 3+ hours on my device. My Dell mini is better suited for that task and has better then 3+ hrs battery life. But maybe if your a gamer or a Facebook addict or Web browser cowboy, you find like people that use their device in the same manner as yourself and then compare notes.
Because of my job I'm often on the go and don't have the opportunity to recharge my device at leisure. It's nice to know it can be used as a phone all day and I'll still be able to call my wife at the end of that day. There if definitely improved battery in 20x after a few services are disabled and be r uninstalled. Prior to leaked JB my device required recharge after i got home. This is how I use my device and the condition under what I use it. These are my results but your milage may vary.
Yes the interface experience for me feels silky smooth. No lag, and no crashes or FCs. Best device I've owned to date.

jhayton said:
Depends on what you think is important. My phone is my "phone". I expect it to be as such. I can't imagine Web browsing for 3+ hours on my device. My Dell mini is better suited for that task and has better then 3+ hrs battery life. But maybe if your a gamer or a Facebook addict or Web browser cowboy, you find like people that use their device in the same manner as yourself and then compare notes.
Because of my job I'm often on the go and don't have the opportunity to recharge my device at leisure. It's nice to know it can be used as a phone all day and I'll still be able to call my wife at the end of that day. There if definitely improved battery in 20x after a few services are disabled and be r uninstalled. Prior to leaked JB my device required recharge after i got home. This is how I use my device and the condition under what I use it. These are my results but your milage may vary.
Yes the interface experience for me feels silky smooth. No lag, and no crashes or FCs. Best device I've owned to date.
Click to expand...
Click to collapse
its not specificly the browsing he did that makes the post usefull unlike some people posting battery charts its the fact that he posts screen on time rather then the chart.
the full charts are useless as you cannot see how often the phone was actualy used.
if i link you 2 charts 1 with slow battery drain in standby and no apps used at all (no screen on time) lasting 2 days exactly and 1 with near no battery in standby and 4 hours app use.
they both look the same if you post a battery chart but only the second one shows the potential of the battery life.
the first just shows the phone needed to be charged after 2 days the second showed the phone is capable of lasting 2 days with near no idle battery drain and gives a verry descent 4 hours screen on time.
a phone that is configured correctly and had good 3g/wifi signal and has 3g/wifi managed correctly, has no apps with adds and no apps that drain battery wil berely use any juice in standby leaving almost all the juice for screen on time.
a badlymanaged phone might drain up to 10% an hour because of adds and poort wifi/3g management/signal.
so in a perfect world (which we should aim for) only screen on/inapp time is important as there should be no other power hoggers.

Advice please! Thinking of swapping!

Hi,
I've had Samsung's for quite a while. The S2, the S3, and I currently have the Note 2.
There are a few reasons that I'm thinking of swapping my Note 2 for an Xperia Z. One of them is due to the size. Like I fool, I never actually used the Note 2 before I bought it, and I'm finding it a bit too big (if that's possible!) in certain situations. I held a non working dummy XZ the other day, and it felt so much better. Add to that I actually prefer the design of the XZ, and a few of the features like being water resistant, etc.
So, I've been doing a lot of research online, and sometimes the Note 2 comes out on top, and others the XZ. I thought I might ask some questions and for some advice, and see what people have to say.
1. The MAIN thing that is holding me back at the moment is the display. I see that the XZ has a higher resolution screen, however I can see on most of the videos and reviews online that the colour looks really washed out when compared to the Note 2 (and other Amoled displays). My question is, if anyone has gone from the Note 2 or similar to the XZ, is it really noticeable? And whilst this might seem like a bit of a weird question, but are there any apps that can 'increase the saturation', etc? I know on the Note 2 there are actually settings on the phone for different display/colour modes.
EDIT: I have read on a few blogs that there might be an update coming with something called White Balance. Does this make much of an improvement? And I assume it affects the display as a whole, not just when viewing pics, etc?
2. Battery Life. I know the Note 2 has a bigger battery. I'd say that if I heavily use my Note 2, it's normally at about 20-30% in the evenings when I go to bed. How do people find the battery life?
3. Widgets - I use widgets a lot. On the Sony, can you still place widgets that are part of downloaded apps? For example, I have a downloaded clock on my Note 2 that also adds widgets to the phone. I'm assuming as they are both Android that the XZ will have this too, but wanted to make sure there weren't any restrictions that Sony had implemented to stop this.
4. In some of the reviews, they have mentioned issues with call quality, wifi signal, over heating, crashes, etc. The reviews have mainly been from just after the phone was launched, so I'm not sure if perhaps there may have been updates since then? But has anyone had any of these issues?
Any advice on the above would be very gratefully received!

First of all, welcome to the xz subforum let's see if I can answer you some questions.
1) I don't think the screen is washed out but it's different than Amoled screen with tend to have more vibrant/over saturated colours but you will get used to it unless you keep comparing them. But the bravía engine will add that saturation you might miss from Amoled screen (for now bravía engine only works on gallery and movies app). Have into account that the rom theme is dark grey not black because it might make you think it doesn't display good blacks but it's just the theme.
White balance changes the tint of the screen ie if you think it's too red or green you can correct it.
2) Right battery life on screen time is not the best for now in stock you will get around 4-5 on screen time. Time will tell if ROMs/kernels can improve that. But stand by battery is Great, some people have reported around 6 days with light usage. So the biggest drain is from screen usage but it gets compensated by the off screen battery consumption.
3) I don't think there is any problem with the widgets unless they have a dependence with a different launcher than stock android.
4) I haven't had a crash yet, wifi signal is alright, I find antenna signal quite good, I does heat a bit but as any new Quad core does and glads doesn't propagate heat that much so it's more concentrated on the CPU zone, it's nothing worrying it's just warm.
All and all I find it a great device, obviously there is always room but improvements but give it time let's see what our developers can improve or sony itself.
At the end of the day is your device and no one can decide for you.
I hope I helped you a bit more to decide and if you have any other questions don't hesitate to ask here.
Sent from my C6603 using xda premium

wawyed said:
First of all, welcome to the xz subforum let's see if I can answer you some questions.
1) I don't think the screen is washed out but it's different than Amoled screen with tend to have more vibrant/over saturated colours but you will get used to it unless you keep comparing them. But the bravía engine will add that saturation you might miss from Amoled screen (for now bravía engine only works on gallery and movies app). Have into account that the rom theme is dark grey not black because it might make you think it doesn't display good blacks but it's just the theme.
White balance changes the tint of the screen ie if you think it's too red or green you can correct it.
2) Right battery life on screen time is not the best for now in stock you will get around 4-5 on screen time. Time will tell if ROMs/kernels can improve that. But stand by battery is Great, some people have reported around 6 days with light usage. So the biggest drain is from screen usage but it gets compensated by the off screen battery consumption.
3) I don't think there is any problem with the widgets unless they have a dependence with a different launcher than stock android.
4) I haven't had a crash yet, wifi signal is alright, I find antenna signal quite good, I does heat a bit but as any new Quad core does and glads doesn't propagate heat that much so it's more concentrated on the CPU zone, it's nothing worrying it's just warm.
All and all I find it a great device, obviously there is always room but improvements but give it time let's see what our developers can improve or sony itself.
At the end of the day is your device and no one can decide for you.
I hope I helped you a bit more to decide and if you have any other questions don't hesitate to ask here.
Sent from my C6603 using xda premium
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Click to collapse
That's very much appreciated, thank you very much! You may well have made my decision easier

I agree with wawyed's analysis. I was in market for note 2 esp for all the cool extra software features. But when I compared two working models of note 2 and Xperia z, I couldn't help loving the Xperia z. Btw, the screen of Xperia when compared with note 2 is really well lit and color reproduction is very nice. I am coming from iPhone 4s so a good camera was important for me and I will say Xperia is notches above note 2.
It does get hot but so did my iPhone 4s.
Batterylife is awesome for me.... I have been for 13 hrs and my battery is 53% I spoke for 1 hr, 3g-WiFi on, on screen notification via lockerpro, fb sync, Twitter sync and exchange email on push.
Only phones that I feel might compete with Xperia are galaxy 4 and HTC one.
I simply love almost stock feel of Xperia.
Swraj