yashsingh1/xdaforums huggingface dataset:
[Windows Phone 7 General] Optimus-Prime:
my battery seems to be fine, i use my scale based on my school schedual. with android from 7 am to 4 pm around 50 to 40 percent.

today running wp7 i unplugged it around 8is and about 6 is it had very little black on the battery icon. im going ot charge it up fully, then kill it, to see if that helps reset the battery stats
[Windows Phone 7 General] ceo4eva:
Well when i first flashed WP7 my battery was over lasting.. After i manually rebooted because i just felt like doing so, my battery has started to drain a little bit to fast.

Are there any marketplace apps that can monitor this stuff yet?
[Windows Phone 7 General] sclip:
Update: Last night, after making sure that my phone was fully charged, I turned off the wifi and removed the SIM card and didn't touch the phone again until a half hour ago (about 12 hours standby time in total). The indicator is showing about 50% battery life remaining. This SUCKS, and any helpful comments about this will be appreciated.
[Windows Phone 7 General] domineus:
just considering its not supposed to be on the phone...

also what theme are you using

and since microsd polling it may have a lot of impact on standard battery life...

plus, let's be real, it is an htc...they're not battery efficient
[Windows Phone 7 General] sclip:
Here are my settings: Dark background theme, purple (hate the color normally, but somehow manages to look nice on the HD2), 30 seconds lockscreen timeout, Wifi off, Location off.

I tried removing the MicroSD, but the phone then becomes unusable with frequent freezes and reboots. I'd love to check if the card is affecting battery life if the damn phone would let me to.
[Windows Phone 7 General] N8ter:
HTC puts bad batteries in their 4.3" phones. They've been using 1230 mAh batteries forever (over a year). Blackberry curves come with 1150 mAh batteries so you can see what that size is somewhat optimized for: feature phones and smartphones with small non-touch screens.

Most smartphones with a 4"+ screen running Android or WP7 have 1400+ mAh batteries (the i4 and Droid X also have 1400, Galaxy S and Incredible have 1500). That's why the battery life is bad.

And it's also the reason why I've never really given the phone much consideration - the battery and the TFT LCD screen they used on it.

That being said, the battery life depends on you usage. When I used my HD2 as myprimary device the battery life was terrible. Once I got my Vibrant and used it only as a PMP, the battery life was terrific because it didn't have a SIM Card and I only used it on WiFi and to play Music and Videos.

But people who use Curve 3Gs as their primary devices and are constantly BBMing and/or SMSing people in addition to calls report days-worth of uptime (emphasis on the plural).
[Windows Phone 7 General] rbrookstx:
My battery life is on par with what it was on android (about 12-16 hours with moderate usage of web, email, facebook, and heavy twitter) and its configured the same was as my android:

1) wifi is on when I need it (maybe 20-45 minutes a day for some marketplace downloads or something)

2) location is always on

3) screen is set to manual, low and 3 minute time-out

4) I have 3 IMAP email accounts that check between every 15 minutes and every 30 minutes.

5) I have a VERY active twitter account that updates every few minutes (not sure exactly as it doesn't appear to be live tile integrated)

6) facebook and google sync

7) HTC HUB is usually running updating the weather and stocks as often as it likes

8) dark brown theme

9) ringer off and no haptic feedback

Hope that helps anyone.

I do agree that the HTC supplied battery is sub-standard. Does anyone know where I can see what the battery percentage is acutally at? I only have the icon in the top right.
[Windows Phone 7 General] FiyaFleye:
Just as a bit of information, my HD7 gets significantly better battery life than my sister's Galaxy phone. Also, those of you removing the SIM, make sure you also enable airplane mode, incase the phone continues to still search for signal... Battery size isn't as important as power management, though I do agree I wish we had a bigger battery on our HD7s... we might have sacrificed a little space for it though...
[Windows Phone 7 General] MvP77:
I think the battery meter is off. After about an hour of playing with Netflix, Zune and watching videos with the ign app my battery meter indicated that I had a lil juice left. I went to sleep without charging the phone. I was sure it would be dead when I woke but it wasn't. I was able to get about 2 more hrs out of it while using the Zune player streaming a playlist I saw.

Sent from my HD2 Windows Phone 7 using Board Express.
[Windows Phone 7 General] N8ter:
There is no third party multi-tasking in WP7 and Android Users usually have more apps/services updating stuff in the background. Yes, WP7 will get better battery life than lots of Android Phones and even theHD2 with the same battery in it due to that simple fact along, nevermind all the other exceptions and the obvious disclaimer: different use patterns are different.
[Windows Phone 7 General] FiyaFleye:
I have ATK or whatever it is installed on her phone, not sure if the AMOLED screen uses more juice though
[Windows Phone 7 General] MvP77:
Don't get me started on task killers and android. ATK may be causing the poor battery life. Those process and apps you think your killing are just gonna restart and cause more battery drain. Android does not need task killers. I suggest trying auto killer wich tweaks androids internal memory management to be more or less aggrsive. Phone must be rooted though.
[Windows Phone 7 General] FiyaFleye:
I won't have much luck with that lol, her phone, her rules... I might convince her some day though
[Windows Phone 7 General] abq1230:
my battery is not doing good

My battery drains faster in wp7 than wm6.5, I had 2 reboots but no more, I am considering in flash back wm6.5 because wp7 is like iPhone devices (just fashion) but I am patient and wanna see what happen with time
[Windows Phone 7 General] shadows6:
I think the battery indicator is screwed on the HD2 WP7 port, I charged my HD 2 the whole night, started checking some stuff this morning and I got a low battery alert, the indicator was showing less than 10 percent, I recharged it while showering and the battery led was green and sure enough, the battery indicator was full. About an hour later, at work, the battery was showing 50% (hadn't been doing anything with the phone) I restarted it just to be sure, and now it's been displaying full battery for about an hour.

Also I have been able to play for several hours with it the first few days without actually noticing the battery indicator which leads me to believe it's just a feedback problem.

I'll try having it die on me to be sure how long it really lasts without a recharge.
[Windows Phone 7 General] emigrating:
I get less than a days use out of WP7 on the HD2 with "moderate" usage compared to it running WM or Android. Android is slightly better than WP7 and WM is much better than Android - in terms of powerusage.

Also, the HD2 seems to run really hot compared to my Omnia7 and previous experience with the HD7. Even when it's not doing anything, the lower back of the HD2 is pretty warm to the touch when running WP7. Then again, there certainly seems like there is some kind of difference between the HD2/HD7 as the HD2 is somewhat laggy compared to "real" WP7 devices - and no, this doesn't seem to be dependant on the SD card I'm using.
[Windows Phone 7 General] sclip:
I fully charged my battery and turned Wifi and location off, and turned on Airplane Mode. The difference is huge. I think I'll get 4-5 days of standby time now.

It is definitely the GSM Radio that is killing the battery, folks. How do I find out which radio version I am using? I had the latest stock TMOUS ROM before installing HSPL 2.08 and MAGLDR 1.12.
[Windows Phone 7 General] spaternitejr:
Coming from a Vibrant... The battery life on my HD2 (running WP7) is amazing. 8 hrs if I was lucky on the Vibrant (that's with processes frozen in Titanium) over double that with the HD2 (will comment further after I've been running it a little longer).
[Windows Phone 7 General] norgan:
Definately downgrade to 2.14 radio. i had very high battery drain with 2.15 and it has been fine with android and wm65 but going down to 2.14 in wp7 has made a difference of about 30% less drainage possibly more.
[Windows Phone 7 General] jenzy1985:
2.14 Radio tested and really good battery drainage :D
[Windows Phone 7 General] marianoitalianoo:
I have got WP7 on my HD2 installed. To downgrade RADIO to 2.14 is it enough to go into boot loader screen ( rainbow screen ) and flash the Radio and than just boot into WP7 ?

This is what i have done, but I have no idea how to check radio version to be sure.

Or I have to flash the whole official ROM then downgrade it to 2.14 and than flash WP7 again ?

Cheers

P
[Windows Phone 7 General] jenzy1985:
Yes, I have made it. work perfectly
[Windows Phone 7 General] peela.pavan:
the fix

Guys, i flashed Radio 2.14 after WP7 installation on the HD2, and now the battery life is much better.
[Windows Phone 7 General] orangekid:
gonna flash 2.14 and see how I do :)
[Windows Phone 7 General] boysha8:
can someone point me to the exact thread for 2.14. I flashed a wrong radio before and bricked my hd2. do not want to repeat the same mistake on my new hd2.

thanks
[Windows Phone 7 General] N8ter:
If your HD2 is getting quite hot when running idle, it's probably defective and will fail on you sooner or later. The HD2 had lots of issues with phones overheating and randomly rebooting or freezing up. Some of them go into endless reboot loops until the phone is allowed to cooldown. More times than not HTC Warranty Repair replaces the main board in these phones.

So, if your HD2 is getting rather warm, it MAY be on the way out - unfortunately (I had to send one back for this issue, by the way).

These phones tend to work find on WiFi, but overheat quickly when used on a 3G/EDGE network, too...
[Windows Phone 7 General] oamblog:
Do you know the camera trick?

First, run camera, and touch camcorder button.

wait until auto-focus and press <back>button.

some people says it works for stopping battery drain, but i have no idea :)
[Nook Color General] guchdog:
I'm on the edge of pulling the trigger for a NC. Since the NC was never intended to be a full fledge tablet I'm sure there are some annoyances from you rooted users. Once you get everything setup what are the cons? I have a rooted Samsung Vibrant running ClockWork on Team Whiskey, Nero ROM. What I'm reading I don't think I will go to Froyo since it is definitely usable but I get annoyed by such things like having to turn on/off screen to fix screen lag. I will most likely just keep it rooted from stock. The reason I'm interested in it is:

Lightweight, small form factor

Great resolution

Of course price.
[Nook Color General] lucifurious:
I have two gripes:

1. No physical back button

2. Adhoc wifi requires turning on/off wifi

Both of these are hardware issues and not related to rooting.

I don't use the in-store feature so not having that doesn't bother me.

Do it, you can always unroot.

Magically transmitted across the interwebs by my kickass NookColor!
[Nook Color General] guchdog:
Just want to clarify, don't have a NC yet. Don't want to buy it as an ereader.
[Nook Color General] bobzdar:
I don't know that the lack of physical back button bothers me, it has a built in gesture for back (swipe to the left on the menu bar) so it's not really a limitation, more a preference thing. The only real downside I've seen is lack of in-store features. There are some issues with the root, mainly some market issues where for some reason all of the programs don't show up. I used the NC for a couple of weeks in stock form and then decided to root, definitely worth it just for the sake of getting a browser with multi-touch enabled. However, I read a lot so that factors into how much I like it.

If you're just using it as an android tablet, it's really good. No GPS, no cameras, no 3g connection, but other than that it's fast with the best screen I've seen on a tablet and is just the right size. My phone has a 5mpx camera, 720p video and GPS and I have it on me all the time, so no need for any of that in a tablet. It also acts as a hotspot, so no need for 3g on the tablet. It's a perfect compliment to a decent smartphone.
[Nook Color General] trancerobot:
If you love to tinker there's no cons. (and if you want a back button, Autonooter comes with Soft Keys that'll put one on the screen for you)

Despite the time it took to learn how to do it, and what to do with it afterwards, I got what I paid for and more. I love to learn and troubleshoot, so rooting this device has been a real treat.

At the moment I have a fully functional tablet that I use quite often around the house and at work. It's a convenient browser (I use Opera Mobile which has pinch zoom and slightly better page rendering than the build in browser), a quick source of the news thanks to a program included in the Autonooter kit, and a useful quick-note taking device.

I'll admit, my primary use for it is browsing, but when you root this thing, you can use any browser you want. I use Opera, but Skyfire and Dolphin HD are also good.

In addition to that, it makes a great portable movie player. The built in player supports MP4 and one other format, but if you root it, you can download Rock Player and play most commonly used video formats.

It's Youtube performance is excellent too, and there's quite a few Youtube video downloaders available in case you want to save your favorites to the SDCard.

Speaking of that, you will want to buy an SDCard. It doesn't come with one, and you might want more than the 5GB free of space you get out of the box.

All in all, it's pretty much a computer, and once you learn how to do everything to liberate it from it's shackles, there's no limit to what you can do with it.
[Nook Color General] Divine_Madcat:
As a tablet, it is awesome, and only getting more so. Lets be real - its GPU is the same as the Droid X, and is not the most perful on the market. Tegra 2 (and one or two others) will soundly beat it, but at a price. Cheaper T2 platforms tend (so far) to have horrible screens, poor battery life, and are large. Other devices like the Tab, just are way over priced.

I think the nook has struck an excellent ballance. It has an excellent CPU, a capable GPU, plenty of ram, and one of the best looking screens out there. I love its form factor (the bezel is one of few NON ugly ones out there), handling, and capabilities, and the price is excellent ($250).

It is also really getting a community behind it, and i think we will see in the near future, many more custom ROMS which speed things up, add features (bluetooth), and generally improve user experience. Right now is an exciting time to be a nook owner..
[Nook Color General] Buff McBigstuff:
If you are not planning on reading you MUST buy a memory card. Many android apps are hard coded to look in /sdcard for things and can't read or write to the internal memory on the nook. Google earth is one example. This could probably be fixed by a developer in a custom rom.
[Nook Color General] infinityPlusOne:
That was one of my main reasons for choosing it over the Archos 70. I think the fact that the NC provides such great bang for the buck and is available at retail outlets across the USA gives it the potential to have a much larger following than something like the A70.

Adding bluetooth functionality will complete this thing.
[Nook Color General] camwinnn:
The only con I've really felt was no mic :/ there slapped in crappy 10 dollar mp3s but not a eReader for memos/notes (tho its not useful) I could see voice search for books valuable.

Obviously want it for Voip not memos, Bt will be a fix but still.

sent from a Nook Color using xda-app
[Nook Color General] ClarkSt:
Ditto to above. The lack of a Back button can be worked around, and really only comes into play while in certain apps that don't show the standard Nook status bar at the bottom. So you can't swipe. Using SoftKeys, and setup the right way, (see forum for more info on that), then you can change the Nook button to launch SoftKeys, which gives you the Back button, and also, as a bonus, a Task Switcher pops up at the same time.

The only drawback I see is that in order to have decent sized icons and text, you need to change the density of the screen. This is fine for everything except the built in Nook apps, like the Store and what-not. The reader itself is fine. It just cuts off some of the text, but it's still usable. Personally, I just use the Kindle app, anyway, and don't ever launch the Nook apps, so it's a non-issue for me.

EDIT: I also dearly want Bluetooth to work, so I can use my GPS and BT headphones. But at least there's a BT radio in the thing. Just need to get one of the wizards to get it working. Last I heard, it was working, but only to two feet. Give me 3 feet and I'll be happy. ;) The lack of Flash is a real bummer, of course, but also to be fixed in an upcoming 2.2 release from B&N, or you could go and install 2.2 right now and boot from sd card. Apparently, it's working pretty well. And, the lack of a mic is a small bummer, but I'm also hoping a wizard will write a USB driver that will work with a webcam/mic. All do-able stuff. Just a little time needed.
[Nook Color General] notinterested:
As a tablet its great. It has shortcomings like others have said but you have to take into consideration that this hardware with an IPS screen for $250 is an absolute steal even considering those shortcomings.
[Nook Color General] 911jason:
I am a long-time Kindle user who recently got into the world of Android with my first smartphone purchase (HTC Aria). I have really fallen in love with Android, in large part due to the excellent community here at XDA. I had started looking for an Android Tablet and stumbled across all of the info about the Nook, after a week or two of research, I decided to just go for it. I figured if I bought it at Walmart, I would have at least 30 days to decide if I wanted to keep it... and even if I bricked it somehow, I don't think Walmart customer service would know the difference and would still refund my purchase. Well, I bought the Nook Wednesday morning, rooted immediately and ended up selling my Kindle Thursday night to a co-worker. This is the real deal and I would highly recommend it to anyone looking for an e-reader and tablet device, as long as they enjoy modifying it.

P.S. I haven't figured out why everyone feels the need to change the LCD density settings... everything looks great stock to my eye.
[Nook Color General] 911jason:
Just curious, what are you using ad-hoc wireless for? I use my android phone as a wireless hot-spot to provide internet to my Nook all night at work, that works fine, but I'm guessing that's not really ad-hoc or what you were referring to anyway.
[Nook Color General] tunwear:
I dont care for bluetooth, gps, or webcam. It doesnt bother me that flash doesnt work. I have flash on my phone and frankly, flash just makes webite load longer and most flash is just ads. It was an ok device preroot, now its a cheap capable tablet. I use it more than my pc. The only major gripe i have is that the edges of the screen seems to not register as well as the middle. But its not a dealbreaker.
[Nook Color General] guchdog:
Thanks guys. Just got one and its great! I was a bit skeptical at first after seeing before the root. Good info!
[Nook Color General] deitiphobia:
The issue with Ad-Hoc is that some devices can not connect to Ad-Hoc networks. They can only connect to Infrastructure mode WiFi networks.

So the problem presents itself when a rooted phone using a wireless tether app is only capable of sharing WiFi via a Ad-Hoc network (Motorola Droid). The Nook Color then can not see the Ad-Hoc network and is unable to connect.

So the Ad-Hoc WiFi fix allows the Nook Color to see and connect to Ad-Hoc networks as well as Infrastructure networks.

If you have a newer phone, like the Droid X, I believe those phones transmit WiFi via Infrastructure mode, so there is no problem connecting any device to it as all devices work with infrastructure mode.

I hope that all makes sense.
[Nook Color General] 911jason:
Yep, that explains it. I wasn't aware that older phones were using adhoc wifi. Is that a hardware limitation or a ROM limitation?
[Nook Color General] RoboRay:
Hardware and software limitation, actually.

Most phones don't have a wifi chip capable of creating a true infrastructure-mode access point, but that is gradually changing. One of the reasons I bought an HTC Incredible is that it can.

But you also need tethering software that can use that mode. Newer versions of Wifi Tether can, for example, but older ones can't.
[HD2 Android NAND Development] FileFixer:
First you must to install yaffs!!!

Download attached archive and unpack it to /usr/sbin/ folder with your File Manager or Terminal window. I preffered File Manager, it is simpliest way.

After copyed mkfs.yaffs2 and unyaffs, you must to change permissions on these two files.

Open Terminal if you don`t previously opened and write...

your_name@computer_name:~$ sudo nautilus

Nautilus is File Explorer on Ubuntu Linux. On other Linux distribution you may have other File Explorer. Anyway... open it with sudo command.

Enter your root password and navigate to /usr/sbin folder.

Find these two files mkfs.yaffs2 and unyaffs.

Right click mouse on it then click to see "Properties".

In properties tab you will see "Permissions" tab.

Click on it and set "read and write" option for all users and group in this tab then close window and Terminal.

You can change permission in the Terminal window with this command if you want...

your_name@computer_name:~$ sudo chmod 667 /usr/sbin/mkfs.yaffs2

your_name@computer_name:~$ sudo chmod 667 /usr/sbin/unyaffs

This is it for install mkfs.yaffs2 and unyaffs. :)

After that, create new folders on your desktop named as "newrom".

Copy system.img from ROM instalation folder to newrom folder and run unyaffs.

Open terminal and type... Only type BOLD text.

your_name@computer_name:~$ cd /home/your_name/Desktop/newrom

your_name@computer_name:~/Desktop/newrom$ unyaffs /home/your_name/Desktop/newrom/system.img

Wait unyaffs to uncompress all files and folders from system.img

When unyaffs has been completed uncompress procedure, you will see something like that...

end of image

your_name@computer_name:~/Desktop/newrom$

Close terminal window if you want to close.

Open folder newrom and delete system.img file. Folder "newrom" contains everything from your system.img file. You may to change, delete or something else to create your new Android build. Yes you may to be ROM cookers. :)

After your intervention on files and many other stuff in your "new rom", you will be prepare to create your new "system.img" file.

This process must to be in other folder with diference name. Not to be in same folder where is your previous uncopressed folders and files. In my case this folder is "newrom".

Folder for new "system.img is my Desktop.

Ok, let see what we must to do... In case when you previous closed Terminal window, you must be placed on Desktop uses CD command in Terminal.

your_name@computer_name:~$ cd Desktop

You must see this...

your_name@computer_name:~/Desktop$

Enter this...

your_name@computer_name:~/Desktop$ mkfs.yaffs2 newrom/ system.img

And you must see this...

mkfs.yaffs2: Android YAFFS2 Tool,Build by PowerGUI

at http://www.openhandsetalliance.org.cn

Building...

Build Ok.

your_name@computer_name:~/Desktop$

After that you will see new system.img on your Desktop.

For boot.img file, procedure is same except name of *.img file.

That`s it. I hope that is help.

Thanks to everyone who helped me to write this guide.

Enjoy.

FileFixer.
[HD2 Android NAND Development] knightxmu:
so much thanks. i'll have a try~
[HD2 Android NAND Development] ducvader:
Ignore this