yashsingh1/xdaforums huggingface dataset:
[General Accessories] moeburn:
I get that you would want to simplify it to provide a rough estimate, and it makes sense to leave out things like heat dissipation and efficiency of conversion because of how small and insignificant of a difference that they make. But h = mAh / mA isn't simplified, it's wrong. I could say something like "h = mA * 2", and it would be very simple, but it would be completely wrong. Not a rough estimate. Just a number that means absolutely nothing.

And my correct formula isn't that much more complicated. If you can understand h = mAh / mA, you can understand h = (mAh * v) / (mA * v).

And the quality of a USB cable will make absolutely no difference in the speed of charging. Either it can handle 5-10 watts, and it charges just fine, or it can't handle 5-10 watts, has too much internal resistance, heats up, and melts/catches fire. The quality of a USB cable can affect things like EMI, signal interference, latency and timing, and can be important when you are trying to extend a cable over large distances, but it will have absolutely no effect on the amount of current transmitted by your charger, and thus the amount of time it takes to charge.
[General Accessories] vectron:
Hmm, if you don't think the impedance of 24awg wire versus 32awg wire used in typical pc usb cable makes no difference in voltage drop due to resistance at 2A current sink during Note 2 charging, then sorry mate. EMI, signal interference, that's were you need electronic choke in a form of popular ferrite beads used in quality cables like from monoprice.

I didn't say anything about your formula being incorrect. I'm just saying for rounding thing off having a simplified formula makes more sense for a ballpark calculation. If you think about it, your calculation is theoretical, but in reality it will take almost 2hr to charge your battery due to other imperfection factors and variation. So as I said, for a practical purpose simplified formula (even so it's not correct) makes more sense.

So buddy, let's agree to disagree ;)
[General Accessories] kms108:
I've seen this
[Xperia Z1 General] msurowka:
I just got the Z1 today and I have to say that im impressed with it, I was an xperia z user and loved it but the Z1 is on a whole nother level. For those of you wondering : The Screen is a drastic improvement over the old one, the Camera I haven't put to good use yet but the initial impressions are pretty good and the phone is blazing fast everything is silky smooth on it. The build quality is much better as well the phone is more rigid and it feels great in the hand, no more crummy quality nfc sticker on the back. However one downfall for this phone is the music quality (speaking in terms of line out, headphones etc,) , overall the quality is decent but the loudness levels are just appalling, my two year old htc sensation produced much louder and bassier tones than this phone. Is there anything I can do to increase the volume on this thing?
[Xperia Z1 General] gtrab:
1.- Check the individual sound levers (settings -> sound -> volumes)

2.- Activate x-loud (settings -> sound)

.
[Xperia Z1 General] Geoffxx:
use poweramp
[Xperia Z1 General] Morlock O:
Walkman -> Settings>-Sound enhancements->Settings->Surround Sount(VPT)->Studio

helps me on all my Xperia devices
[Xperia Z1 General] msurowka:
I already had those cranked I guess Ill have to wait for a mod or something, you know considering sony helped invent portable music players I really wish they did something nice with their phones
[Xperia Z1 General] Dpk1:
If using Walkman then turn off all sound enhancements like clear audio etc. (i.e default settings). It is loudest (and most neutral) sound via headphones to my ear!
[Xperia Z1 General] Geoffxx:
I have to agree with everything you said - this is a world beater, Sony has thrown a stake in the ground for all others to catch, I've had the Z ZU and now the Z1 it is simply awsume - funny after using the XZU for a few weeks the X1 feels rather small lol

Only issue I've had is that my 64gb Kingston SD card is not being recognised 16gb works fine - probably not the Z1 at fault but I still need to test the SD card in another device to prove it 100% - this card worked in my Z and XZU
[Xperia Z1 General] RCJ89:
Have now had my phoen since wednesday afternoon and it is fantastic the look and feel of it, the camera performance is fantastic much better than the s4 and the xz imo, battery life is just superb, I wish the loudspeaker was louder but atleast it is some what louder than the z, also phone calls are louder and audio in headphones is slightly louder all in all i am very happy and is well worth the upgrade from my z which goes down as my second favourite phone ever with the s4 in third.
[Xperia Z1 General] Dpk1:
I was going to give my initial impression of the Z1 after using it for almost 2 days, but your post sums it all :D! The camera unit though is perfect on mine, no aberrations or smudging. Display is excellent, viewing angles only slightly better than XZ (worse than amoled or z ultra) but brightness seems higher than Z ultra or GS4. I personally have no complaints with the display as is (though off axis viewing could've been at par with ZU at least).

Like you, I too bought the device maily for it's camera & I'm not disappointed. I think the camera on this device is awesome. Didn't even play with all the features yet but took a few daylight shots & some indoors. Overall IQ is much better than XZ or GS4 (even at full 20mp). It's early to say but I don't feel a need to carry my good old canon powershot anymore :D!

One thing I'd like to add is that this device is blazing fast! Fastest & most fluid device I've used till date. The new UI is refreshing & I like the new subtle animations (improved over the XZ). All apps working great till now for me.

Overall very much pleased with my new purchase so far!

BTW, I'm on the latest 14.1.G.1.531 stock rom.
[Xperia Z1 General] Morlock O:
I don't think he is complaining, just giving an opinion and asking for a solution... SMH..
[Xperia Z1 General] baseline01:
Have mine for about a week now.

Pluses:

Beautiful device, sturdy and unique aesthetics

Wickedly fast!

Very impressive screen with vivid colours when viewed at an almost perpendicular angle*

Minuses

*The viewing angles (for a flagship product mind you) are for lack of a better word...atrocious. As soon as I tilt this at about 15 degrees the colours begin to loose intensity.

Placing the phone flat on the table forces me to strain my eyes (things get really washed out). There are of course very easy ways to circumvent this but dunno... I just feel that a phone costing ~600 quid shouldn't really have this issue...

Nevertheless, aside from the viewing angles thing I still believe that the Z1 is the device to beat this year.
[Xperia Z1 General] Geoffxx:
there are bugs in this phone, more than XZ at release - the XZU which I owned for about a month was much more stable than the Z1, it doesn't really bother me because I think they rushed retail deployment and have released 2x updates in the last week, I expect this phone to be stable over the next 5 weeks, in the mean time expect a few glitches
[Xperia Z1 General] naujoks:
Haven't encountered any.
[Xperia Z1 General] msurowka:
I never really understood why viewing angles matter, I mean I don't remember the last time I looked at my phone from the side I always look at it dead on, on a tv with a bunch of people on a couch I see why viewing angles matter but on a phone its irrelevant
[Galaxy S 4 Active Q&A, Help & Troubleshooting] lances1027:
What does this mean exactly??
[Nook HD, HD+ Q&A, Help & Troubleshooting] inspireyue:
Hey guys I have several questions today and hope that I can get them answered.

Are pre certified HD+ used tablets or do barnes and nobles actually open new and put them as pre owned?

Serious question: Comparing Stock UI vs CM emmu, which is faster and less laggy? and I think CM includes root after it is installed right? does it also include unknown apk sources? If I install a launcher like Nova, does stock launcher still run in the background? would it matter? because I am deciding whether to convert to CM or not and if I did, I would go with emmu. Most importantly, I have a 2GB MicroSd, would that be enough for CM? if not would it be enough just to root my tablet and install unknown apk zip? Is CM 10.2 stable now or do I have to use CM 10.1 RC? Thank you guys:good:
[Nook HD, HD+ Q&A, Help & Troubleshooting] ttablet:
Some thoughts

A couple of thoughts. You'll want at least a 4G card to do the CM install (the boot image is 4G). If you want to do a backup of your stock install (recommended), you'll want a larger card or a second one to grab the backup (my initial backup was 1.34G).

On stock vs CM, I chose CM installed internally because (a) I didn't really care about stock, (b) at the time, CM appeared to be a more stable solution overall than rooted stock + an alternate launcher + the ability to install from unknown sources (the stock OS would reset if an app modified /system). FWIW, that problem now appears to be solved (see: http://xdaforums.com/showthread.php?t=2062613). While I haven't compared stock vs CM10.1 side by side on the HD+, I've been running rooted stock with an alternate launcher on my Nook Tablet for over a year and that has been a very good experience. But CM 10.1 on the HD+ is quite stable and smooth, and I haven't seen any real issues with lag.

So to a certain extent, it is a matter of choice. Rooted stock will keep you better connected to the Nook world (e.g., you can download and install the free Friday app each week, if you'd like to), while CM will give you more of a full Android tablet experience.
[Nook HD, HD+ Q&A, Help & Troubleshooting] Deleted member 2092952:
Actually, the 4GB boot image is old. I think it is leapinlar that posted a way to just stick the files on the sdcard at just a few MB literally. Its entirely possible to backup stock to a 2GB. Running cm on it though, well I don't remember. You'll have to search for it though as its not as straightforward as it sounds.
[Nook HD, HD+ Q&A, Help & Troubleshooting] inspireyue:
Thank you guys so much for your responses, they are really helpful for deciding which rom to use. The problem is I only have a 2gb micro in my phone now and I was think about backing up Stock(around 1.5 gb ish) i think? Then dump it and do an internal install into the HD+. I don't know if that is possible and if so can I have the link to img/tutorial? SInce I want the most stable and safest experience possible should I stick with CM 10.1 RC or are the 10.2 nightlies REALLY stable now? Does flashing to CM automatically include root and enable Unknown apk from setting menu or do I have to use leapinlar's zip again?
[Nook HD, HD+ Q&A, Help & Troubleshooting] ttablet:
1) Yes, the initial backup shouldn't be more than 1.5G.

2) CM 10.1 RC2 is probably going to be more stable than the nightlies for 10.2 (but I'm still running 10.1, so I can't really comment on 10.2)

3) The files that you need for an internal install of CM are linked from this thread: http://xdaforums.com/showthread.php?t=2263553

The thread also includes basic directions. And, yes, it seems that the latest boot image requires only a 1G card, so you'll be fine with your 2G. Sorry for passing on out-of-date information.

4) If you need directions that are more step-by-step, look here: http://xdaforums.com/showthread.php?t=2317500

The second post in that thread also includes some useful FAQs

5) After you install CM, you won't need any additional zips to give you root access or to allow side loading. To enable unknown sources in CM, open settings, go to the security tab, and you'll see "Unknown Sources". Tap to check the box and you'll be able to side load. Similarly, if you go to the tab "About Tablet", click on the version number 6-7 times, this will enable "Developer Options". Go to that tab, and you'll see an item for "Root Access". You can verify (and set) the type of root access you want.
[Nook HD, HD+ Q&A, Help & Troubleshooting] inspireyue:
ok i will try flashing that, Do i have to flash the kernel from verygreen or is the kernel already flashed when i install CM 10.1RC2? and does the high screen resolution stay the same after I flashed to CM compared to stock? Is stock launcher on CM faster than nova launcher?
[Nook HD, HD+ Q&A, Help & Troubleshooting] ttablet:
If you install CM 10.1 RC2, you will be all set . . . nothing else needed. Resolution remains the same. Launcher is Trebuchet, but I've never used Nova, so can't offer a comparison
[Samsung Galaxy Nexus] kevinjqiu:
So I flashed the latest and "greatest" Android 4.3 on my Galaxy Nexus. After all, this is why we get our nexus devices for, right -- getting the latest updates without begging cell phone vendors or carriers. But Android 4.3 on Galaxy Nexus is driving me nuts -- A full charge won't last me for half a day without much usage at all. The phone intermittently wakes up and won't go back to sleep again, and after I press the power button to put it to stand by, it wakes up a few seconds later. Granted, it's not like that all the time, but it's often enough to be annoying and it's eating the battery alive. Before you ask, yes, I did do a clean install with root.

Very frustrated with this update, and come to think of it, the Android updates of late have not been stellar -- I experienced system random restart when 4.2 hits, and now this...

Sorry for the ranting but I'd like to know if anyone else has experienced similar problems. I googled around and there's an reported issue of Galaxy Nexus battery drain but given the discussion on there I don't think Google is going to dedicate any resource to fixing that.

Which JB point release do you guys think is the best for Galaxy Nexus?
[Samsung Galaxy Nexus] Kustaa:
Maybe battery life is not the best one, but you should let the phone settle some days.

The wakening problem is not 4.3 related. Indeed maybe its a usb port/pin problem.

4.3

Enviado desde mi Galaxy Nexus usando Tapatalk 2
[Samsung Galaxy Nexus] me2kimi:
Same here. Been downgrade to 4.2.2 after frustrate with 4.3 battery. Full charge at morning and low battery arround 5pm. 4.2.2 with 4.3 features also drain battery alot. Now I'm running on TeamEOS 4.2.2
[Samsung Galaxy Nexus] waveboy:
Turn of mobile and network location in location settings and try it for a day :)
[Samsung Galaxy Nexus] chrisinsocalif:
Have you narrowed out that it's none of the apps causing issues?
[Samsung Galaxy Nexus] Nexusaurus:
As personal experience, much of what you describe did happened to me some time ago and it was cause for some apps that were not optimized for the newer Android API version.

That said, you could try boot into Safe Mode (keep pressed the "Turn Off" at the shutdown screen) and see if keep happening the issues you describe
[Samsung Galaxy Nexus] Prasad:
Use Wakelock Detector app to identify what's draining your battery unusually..
[Samsung Galaxy Nexus] jimmyco2008:
Way ahead of you, I need my tethering.
[Samsung Galaxy Nexus] leyvatron:
The waking of the phone is most likely caused by a USB malfunction. 4.3 isn't great because Verizon hasn't updated the Nexus radios so the signal is very bad. It goes from LTE to 3g to no signal and back. It does this so ,much that the battery takes a big hit. Find a ROM where you can turn on and off LTE, that should improve your battery.
[Samsung Galaxy Nexus] nomancoolboy:
The battery drain is because of "always searching for nearby wifi" option

Just disable it ...
[Samsung Galaxy Nexus] t1.8matt:
ive been happy with 4.3 on my VZW Gnex except for constantly having data issues. i downloaded a couple 4.2 roms again to see if they help any. I'm guessing it's because VZW doesn't officially have 4.3 on the Gnex which is why we are seeing data problems. I don't know specifics, maybe binary problems, i dunno. All i do know is it's annoying. I can't even stream iheartradio or pandora at work without it constantly cutting out. then i'll lose data all together and have to reboot the phone to get it back.
[Samsung Galaxy Nexus] cbowens:
I just had this exact problem and spent a day working on it. It actually has nothing to do with android 4.3; its actually the usb port on the phone, as stated a bit earlier in this thread. More specifically, the pin inside the port is likely shorting with the outer surface of the port, due to it bending slightly. This causes the phone to have funky voltages being detected at the port, and results in the phone behaving as you described (the waking up when the screen is off is actually it thinking its going into charging mode). There are two things to do to fix it. Firstly, take some compressed air and thoroughly clean the port out. Dust that accumulates in the port can cause problems like this, and blowing it out is a relatively simple task. If that doesn't work, the next thing to do is to bend the pin up a bit. Note that this requires you to be a bit gentle, but is not overly difficult. Turn the phone off and remove the battery first, then wedge a very small flat head screwdriver between the pin and the bottom of the port. Very gently apply a bit of pressure, just to bend it up a bit. This doesn't need to be by a lot, in fact when i did it, i could only barely even see a physical difference. Put the battery back in and power the phone back up, and see if it was enough. It fixed all my problems when I did it a week ago.
[Samsung Galaxy Nexus] Seraz007:
Don't know what seems to be the problem here :confused:

Lasts me 1.5 days with 4hrs On Screen Time Every Time

Don't blame 4.3 if it's an app messing with your battery life :rolleyes:
[Samsung Galaxy Nexus] kevinjqiu:
Thanks everyone for chiming in. Here's an update. I uninstalled Go battery widget and now the battery lasts longer. Not as long as I had hoped but better. I installed wakelock detector (thanks for suggesting it) after I uninstalled Go battery widget so I don't have the evidence to prove that Go battery widget is the culprit but the phone seems to be running better now. I also haven't experienced any random wake ups.
[Samsung Galaxy Nexus] Coldblackice:
Would the data issues more likely be a factor of radio, rather than ROM?
[Samsung Galaxy Nexus] Braneless:
Why do that when you can complain on a new thread on xda?! 4.3 sucks because crappy Go apps create wakelocks!
[Samsung Galaxy Nexus] iLeopard:
I had the same issues with battery life when I upgraded to 4.3. However, I largely attribute that to T-Mobile's horrible reception in College Station, TX. I used PA, CM10, Purity, Avatar, and a few others but the battery life and performance was not respectable even though they claimed the contrary. This phone is reaching its the end of its product life and no matter how many "optimizations" go under the hood, the hardware is just not apt for ROMs designed for higher end phones.

In the end, I flashed a stock rooted ROM, no more "optimizations", "tweaks", or "improvements"...just a clean ROM. Granted, I in no way mean to offend any developer and their hard work but my experiences with their ROMs left a bitter feeling towards them.

Battery life improved significantly. What used to be 100% to 30% in 8-9 hours turned into 100%-50% in 14 hours. Do keep in mind I'm not a power user. My phone serves as a music player for my ~1 hr commute from and to school, occasional text messages, random redditing, and the random news article before class. In all, I average a little under 2 hours screen time before I deplete the battery to 5-10%.

It's also important to use the appropriate radio for your market.

TL;DR -

Try stock and a different radio.
[Samsung Galaxy Nexus] Cloudy_cloud:
Kernel

I have always seen major differences between Kernels and attributed the majority of battery life to that. Some kernels just work better than others. For example, I know that TONS of people love Franco's kernel, but on my phone battery life is terrible on it. Personally, I like Golden and it seems to really improve battery life.
[Samsung Galaxy Nexus] orangecream:
Same here. I've been having constant data issues with 4.3. So much so that I've just lock myself to 3G and so far, that's been good. 3G->4G or back doesn't work half the time and requires either toggling airplane mode on and off, or rebooting the phone outright.
[Samsung Galaxy Nexus] durtoffmysboulda:
Going to have to agree. I have VZW and all the 4.3 ROM's I've tried have been less than impressive. I obviously appreciate the dev's work but nothing i've tried is ready to be my DD
[MDA II, XDA II, 2060 ROM Development] koken:
i try to upgrade my os from 2003 to 2003se, but it fail :cry: , then on my ppc screen: on top serial, on bottom v.1.06, i cannot reflash it again.. (the result is look like on the file that i attached) what must i do for now. i am newbie :oops: , and need your help to teach me step by step? thank you very much about your attention. :?
[MDA II, XDA II, 2060 ROM Development] dave:
Use THIS

It should skip some system checks and allow you to upgrade (error 100 is country or device error, dont remember which of the two).

Try it out and let me know

EDIT: changed file URL, was wrong.
[MDA II, XDA II, 2060 ROM Development] koken:
sorry dave i can not download from that link. (i already a registered user). if you feel free, please attach it. thank you
[MDA II, XDA II, 2060 ROM Development] dave:
Here it is

Credits of course go to buzz and all the wm gurus.
[MDA II, XDA II, 2060 ROM Development] koken:
thanks dave!!! my xda is alive!! :P :P :P ...

god bless u

ehm... but i have little problem.. the camera button doesn't work..

how to solve it??
[MDA II, XDA II, 2060 ROM Development] dave:
AFAIK, no chance at the moment.

I have been lucky and mine works, but I read that for the majority of users it doesn't. :x

But you can map your camera to another button :P
[MDA II, XDA II, 2060 ROM Development] koken:
fixed!! TYVM dave! you're the man!
[Sony Xperia Z Ultra] ijat91:
I have a wild thinking, could this be possible? Z ultra and z1 are not that much different, I'm sure we can get all benefit of z1, any development done there can be use in z ultra right? Correct me if I'm wrong :p
[Sony Xperia Z Ultra] archion:
It's technically the same device, just with a larger screen and worse camera.
[Sony Xperia Z Ultra] ijat91:
Well, the development for this phone kind of slow, i remember when i use samsung s2, so much development and i keep changing rom, if not that much people use this phone, i hope any development in Z1 will benefit us :)
[Sony Xperia Z Ultra] LordManhattan:
Yup, you're right. They use the same internals, so it should be possible to cross-develop between these two devices, much like what's being done with the Galaxy S2 and Galaxy Note (same internals, only the Note has a bigger screen).
[Sony Xperia Z Ultra] avetny:
Yea I kind of agree....but listen we just started and already running Cyanogen, which is extremely stable for beta ;)

Soon we will get more rom's/themes ;)

Oh yea remember Z1 is better cuz the camera (and smaller screen providing little bit more FPS ;))

Stay tuned.