yashsingh1/xdaforums huggingface dataset:
[Asus  Eee Pad Transformer Prime] Mithent:
I didn't think it sounded desirable, no. So, if anything, having metal on the "wrong" side of the antenna could be beneficial, as far as GPS is concerned. Does make me wonder if the aluminium could be a red herring as regards to GPS performance (although it could be more of an issue for WiFi, since the access point could quite legitimately be below you).

Edit: Unless the aluminium back reflects signals back to the antenna and causes issues that way, of course. I don't know if that's likely.
[Asus  Eee Pad Transformer Prime] Sokonomi:
The two smartest things ive heard on the prime threads about GPS this week. :D

A lot of people seem to have the impression that GPS uses an omni antenna.

Im no radiology expert but is there material that absorbs radiowaves to stop the bounceback from smothering the GPS antenna?

A film of lead stuck on the backplate behind the GPS antenna comes to mind.
[Asus  Eee Pad Transformer Prime] Diamondback2009:
Okay, so now we know the antenna is covered by plastic and glass only towards the frontside of the Prime. That's good news.

I am still of the opinion that ICS may solve many of our issue, not because it's ICS but because ASUS actually spent time testing ICS and optimizing it, which is - obviously - not the fact for our current Honeycomb versions
[Asus  Eee Pad Transformer Prime] Col.Kernel:
It doesn't have to be lead. Radar dishes are made from aluminum.
[Asus  Eee Pad Transformer Prime] Sokonomi:
The fact that a GPS antenna has a conical reception which is pointing up and away from the shield,

and the fact that people have indeed been reporting the clock behaving wonky leads me to believe the same.

GPS working sporadically and even getting a lock standing still does seem to prove it is indeed functioning.

Just a bit dodgy.
[Asus  Eee Pad Transformer Prime] robomo:
Nothing new, but another diagram from the FCC (WiFi SAR report 1 of 4, Report No. : FA182445-02)
[Asus  Eee Pad Transformer Prime] Diamondback:
Actually this seems to be the best position to put any antennas in. The top bezel is hardly covered by hands or anything else.

I just did a short test of the Wifi antenna switching. It seems to work well for me:

Cover both WiFi antennas with your hands.

The Wifi reception should go lower

Now pull one hand away, the Wifi comes back to normal

Put the hand back on (both hands again) Wifi is worse again

Now pul lthe other hand away

Wifi signals are back to good levels again.

So at least for me the switching between the two Wifi antennas works.
[Asus  Eee Pad Transformer Prime] Sokonomi:
Not entirely sure what the point is of installing wifi antenna diversity if both are in the exact same orientation.

To me it would make much more sense to put one at a 90' angle from the other,

so atleast one antenna polarity is in line with your router in both portrait and landscape mode.

Now it seems all or nothing?
[Asus  Eee Pad Transformer Prime] robomo:
Check out the FCC Wi-Fi report for a look at orientation: http://xdaforums.com/showthread.php?t=1423559

---------- Post added at 05:36 AM ---------- Previous post was at 05:20 AM ----------

The above chart shows emissions at the edge of a 802.11n channel. The "Antenna polarity" I believe is referring to the orientation of the calibrated test antenna.

You'll notice that for

2483.5Mhz Horizontal (average)- 39.93 level

2483.5Mhz Vertical (average) - 36.94 level

The difference between vertical and horizontal seems to only be a few dB. It appears they've compensated for orientation fairly well with their antenna design.
[Asus  Eee Pad Transformer Prime] e.mote:
>wifi antenna diversity if both are in the exact same orientation

Spatial diversity is different from what you're talking about, which is polarization diversity.

Wifi signals tend to be vertically polarized, although antenna design can allow dual polarization, which is why recent routers w/ internal ants can be mounted either horiz or vertical. The same would apply for ants of mobile devices, which can be held in various orientation.

GPS sigs are circularly polarized.
[Asus  Eee Pad Transformer Prime] Sokonomi:
Interesting stuff. The seemingly parallel antennas threw me off,

as im used to fiddling with polarity a lot on my video drones.
[Asus  Eee Pad Transformer Prime] robomo:
"At your own risk"

Although it would void the warranty, one could take a Dremel cutter to the aluminum plate that sits over the Wifi and GPS antennas. It would provide a window exactly where the antennas are, and keep the backplate mostly in tact. This would probably increase the WiFi signal range and allow better GPS reception.

Step 2: fill in the window spaces with the plastic stuff e.mote posted below thanks e.mote

Not something I'm desperate to do, but it's an option for those who have no qualms about voiding warranty :D
[Asus  Eee Pad Transformer Prime] e.mote:
Cover the cut-outs with this

http://www.amazon.com/InstaMorph-Moldable-Plastic-12-oz/dp/B003QKLJKQ
[Asus  Eee Pad Transformer Prime] unknown_owner:
I can see it now: take a dremmel and you slip and now you have a complete see-through to the front panel. hole in the back and hole in the front make for a good place to tie string and use the Prime as a Christmas decoration.
[Asus  Eee Pad Transformer Prime] robomo:
It's "at your own risk" territory.
[Asus  Eee Pad Transformer Prime] BarryH_GEG:
Here's the G-Tab Wi-Fi FCC schematic and a tear down. It doesn't look like it has any antenna advantages over the Prime. Thoughts?

http://www.techrepublic.com/photos/...54&tag=thumbnail-view-selector;get-photo-roto
[Asus  Eee Pad Transformer Prime] robomo:
It has one inherent design advantage - the plastic backing vs aluminum.

However, the Transformer Prime WiFi still performs well enough for the majority of owners it seems, and there was some hint that the recent firmware update helped GPS reception somewhat.

I would say the Prime has an advantage over the Galaxy Tab when it comes to WiFi - it has two antennas. This allows for it to alternate between the two depending on which one has the best signal, regardless of orientation. The G-tab only has one according to that diagram.
[Asus  Eee Pad Transformer Prime] Diamondback:
I think GPS shouldn't be an issue of the metal backplating. As the name says, it's actually behind the antenna, therefore not disturbing it.

Wifi is another thing, in this case the metal may be bad. But y wifi works fine so far, it's weaker than my phone, but not slower.

Lets see what ICS brings.
[Asus  Eee Pad Transformer Prime] BarryH_GEG:
But GPS antennas are omni directional. So logically the Prime will always have a 50% signal deficit. Using the G-Tab as an example, its GPS chip's best signal would be from the back because only a thin piece of plastic is seperating it from the outside world. No?
[Asus  Eee Pad Transformer Prime] robomo:
It depends on how the antenna is optimized. If it's optimized for facing up through the glass only, it may not make much difference. Or it might - depends on how it was designed.

Regardless however, it *would* see a whole other hemisphere of the sky if it were sitting vertical.

If it's lying flat, it's got that already.
[Asus  Eee Pad Transformer Prime] keitht:
The OS should have nothing to do with it. I have a Xoom sitting here with perfect GPS on Honeycomb.
[Asus  Eee Pad Transformer Prime] Diamondback:
not exactly talking about the OS. i am still convinced that the current HC build does not represent the software quality asus wants to deliver.

i think our current build is totally screwed up because Asus never wanted to release the prime with HC. i think they optimized the hell out of ICS but they couldn't finish it for christmas. so we got a super crappy HC build instead of a good ICS one.
[Asus  Eee Pad Transformer Prime] Magnesus:
Very probable. First build on first Transformer was crappy as well.
[Asus  Eee Pad Transformer Prime] demandarin:
aside from Asus using metal backplate, seems as if they did thoroughly try to make the best scenario. as said and seen, Prime has an advantage over other tabs from its dual wifi antennaes that switch. also shown and discussed that the placement of GPS is not even really affected by the aluminum backing unless its reflective noise hampering the signal possibly. also as we found out the prime does have the latest and greatest Broadcom Gps chip. so technically the prime should have the best GPS and wifi range/strength out of tablets. but as we know, this is not the case at the moment. with all this info and schematics, and people posting better reception after latest update, this is all leaning towards more of a software issue. Asus make have been working more on optimizing things more for ICS than the rushed out honeycomb version. especially since Prime was supposed to ship with ICS originally anyways. add to the fact a brand-new Tegra3 chipset that will have its own specific needs and optimizations needed with older firmware. its an even better case now for GPS issues and some wifi to be caused by software implementation. it needs more revision. If ICS drops and issue are still around then the case swings more towards some reason, like backplate. time will tell.

---------- Post added at 04:44 PM ---------- Previous post was at 04:37 PM ----------

the zoom also didn't have a brand new Quad core/5 core chipset that has never been used or implemented before. so things aren't exactly the same when comparing prime to other devices. this is all uncharted territory in the tablet community. the tegra3 have different needs and optimizations made in order tl work with all components properly and to a competitive standard. like others said, HC was basically slapped on the prime to make Christmas deadline. most of their time is getting ICS ready. ICS may bring alot bigger improvement then people may realize since Prime originally was centered and built around that version. can't wait to see what it brings to the table.
[Asus  Eee Pad Transformer Prime] JoeyLe:
Yeah, as you can see the Prime running ICS 4.0 here: http://www.youtube.com/watch?v=9tAwHCDq-94

This is 17 november! and you can see it runs already very smooth here.
[Asus  Eee Pad Transformer Prime] Beards:
From my point of view the biggest issue with the Prime not having ICS as yet is not because of Asus but more to do with Google.

First and foremost Google have to have it seen on their devices and for Tablets I'll make a small wager that will include Motorola and the Xoom.

Once this is out in the open others will be allowed to follow suit.
[Asus  Eee Pad Transformer Prime] BarryH_GEG:
And as the ICS launch partner, Samsung's got a bit of an advantage too having had longer to work with it and the benefit of continuous access to Google's engineers.
[Asus  Eee Pad Transformer Prime] Beards:
Correct.... Forgot to add that bit.

Samsung had 42 Google engineers working with them.
[Asus  Eee Pad Transformer Prime] BarryH_GEG:
And who said money can't by love or happiness... ;)
[Asus  Eee Pad Transformer Prime] markimar:
i don't see why Asus didn't use the metal backing to their benefit? You would think it could be utilized by the wifi or the gps. But hell I don't know squat about electronics.
[Asus  Eee Pad Transformer Prime] Beards:
If they had attached it directly to the back plate to increase the signal it would have caused all manner of issues every time you touched the plate.

No doubt it has been insulated for signal loss but you can only do so much.

For Wifi it was the reason they added a second antenna, purely because the back plate was passing back far too much signal noise.
[Motorola Photon 4G] na7q:
i've come up with a fix for the roaming issue on CM7 and CM9 for Electrify users. download the file attachment below. extract the file from the zip and then replace it with the current one in the /system/lib directory. then reboot. you can select between automatic and home only now! no need to restore the stock rom to fix it. this replacement file fixes it completely :D

there is no force roaming with this fix.
[Motorola Photon 4G] shabbypenguin:
may have to test this out on sprint, see if it will allow us to connect as normal.. if it does i see no reason why not to include it as official so that electrify owners dont have to bother with extra flashes :)
[Motorola Photon 4G] dxl880517:
That's very kind of you!
[Motorola Photon 4G] roundeye1987:
This should only need to be done once, right?

Sent from my CWM OC'd CM7 Electrify.
[Motorola Photon 4G] yepitsme19:
So far seems to be working great. Thanks!
[Motorola Photon 4G] na7q:
@shabbypenguin Let me know how this works out for you! I'm very curious if it will work on the Photon.

@roundeye1987 you only need to do it once! then you're good to go! although if you change to a new update of either rom you will need to replace the file again.
[Motorola Photon 4G] shabbypenguin:
well im pleased to say that it works fine enough for what i can test for...

unfortunatly no matter what setting i change etc etc i cant get 3g in cm9 so idk if that works with it... but i know 1x and voice/sms works fine :)

however there may be a time that the bootloader/4g issue gets fixed, and if so then we are gunna be working non stop to get 4g working in cm. if we can pull that off then it may come to ifnd out that this ril (gunna guess is from the electrify) may not work with 4g. if thats the case then it will have to be a seperate downloadable flash again. but for now ill swap it out in my hatif i compile anything electrify owners with have this fix baked in
[Motorola Photon 4G] AKDMA:
Excellent.. Thanks very much.
[Motorola Photon 4G] na7q:
there could be a problem with 3g for photon users. glad to see it at least works for you! i do get 1x and 3g along with everything else being fully functional in terms of the radio. thanks for testing it!
[Motorola Photon 4G] jokersax11:
Stock doesnt show 1x it pretends its 3g. To know what you really have on stock you have to look on the about phone then status. Some people are just noticing they have been on 1x and not 3g. I think it was a crappy move by sprint to lie this way.
[Motorola Photon 4G] my2cents:
Here is a way to fix the issue, but I dont know if you can do it on a locked phone.

http://xdaforums.com/showpost.php?p=18931550&postcount=3

This guide was from a Samsung Moment, so the code line locations might be a little different. I cant figure out how to properly edit a smali file, so I haven't been able to test it on a stock rooted photon.
[Motorola Photon 4G] jokersax11:
Thank you so much cm9 alpha 11+ can now switch between Sprint and Verizon at will. You will be credited.
[Motorola Photon 4G] na7q:
you're welcome! glad to help out a little bit on this project (:

now i just need to get it into a flashable zip.
[Motorola Photon 4G] atroph:
Does the PRL matter with this file? When I switch automatic I can't seem to get anything better than 1x. It could be my location but I am in a heavily populated big red area.

Sent from my MoPho. All typos are the phones fault.
[Motorola Photon 4G] na7q:
the prl does matter. i'm assuming it's your location and the location of the roaming cell site that's making you have a 1X signal.

check out jokers results with this running on the photon.

http://xdaforums.com/showpost.php?p=21037378&postcount=906
[Motorola Photon 4G] xecuter2:
Would it be possible to get this working on the Electrify? I am using it right now to allow roaming but I can not get it to force roaming when set to automatic. Automatic actually works as automatic and stays non roaming until I leave US Cellular towers. If there was a simple way to force roaming I would be sooo happy.

Thanks!
[Motorola Photon 4G] MikeyLee:
Im a little confused because I can go between Home and Automatic just fine on CM9 already

---------- Post added at 06:47 PM ---------- Previous post was at 06:28 PM ----------

Tried it anyways. It didn't work for me at all
[Motorola Photon 4G] w0lf215:
This feature is/has been implemented in CM9 Alpha Builds since Alpha 11. So using "adding" this to CM9(assuming your on a relatively new verison..) is a waste of time. And i think that Sprint will limit you to 1x roaming by default PRL, youll need to flash a business PRL to get 3g roaming in certain areas. For me in North Florida atleast I was unable to roam with 3g until I flashed a business PRL that allowed it.
[Motorola Photon 4G] jokersax11:
Nope I get roaming 3g
[Nook Color General] chase2hoop:
I decided, that since I really wanted Netflix on my nook color, I should root it. I installed CM7 on my SD card, and it was really slow and laggy. Finally, when the nook update adding Hulu and Netflix came out, I decided to return to the stock OS. I tried to update it, but I get this little green android holding a yellow triangle with an exclamation point inside it (like the thread icon.) I figured out I can use the thing if I hold down the power key and reboot it. Anyone know how to fix this error?
[Nook Color General] votinh:
Did you successfully restore stock OS?
[Nook Color General] chase2hoop:
Yes, I had CM7 Booting from an SD card. All I had to do to return to stock was remove the SD card.
[Nook Color General] chase2hoop:
Ok, I've figured out that this problem is Clockwork mod (Recovery I'm guessing?) It keeps trying to handle the update, and results in the error. So I guess the question now is how do you remove Clockwork mod (recovery?), or at least stop letting it handle the installation of BN updates?
[Nook Color General] kingston73:
I just went through this myself, read through this thread to get your fix:

http://xdaforums.com/showthread.php?t=931720
[Epic 4G Q&A, Help & Troubleshooting] HumanXv2:
What I did was when I went to a mtd rom the first time I was worried because of the fact that I was going to format eveything. I backed up most of my apps and also a lot of the system files that sounded relevent to the operation of the phone. My question is are these system files dormant and not going to be a problem so I can just delete them?
[Epic 4G Q&A, Help & Troubleshooting] androidmaster1:
when you changed to MTD , based on my understanding from the information provided in the threads here. you basically , non-partitioned your internal memory space. (open-sourced), so basically, if you tried to revive those files that are not mtd format, you would possible have operation problems. i think you may want to keep them as backup.(system image purposes).
[Epic 4G Q&A, Help & Troubleshooting] KennyG123:
Did you restore your system with a nandroid advanced restore? Then you won't need them and can run a new backup if you like.
[Epic 4G Q&A, Help & Troubleshooting] HumanXv2:
No I didn't restore as I didn't need them. I pretty much redownload most of my apps afterwards. I was worried something would get formatted that might have info vital to the phone like account info and so on. I would like to clear them out. Thanks for the responses guys
[Epic 4G Q&A, Help & Troubleshooting] flastnoles11:
All the roms have the vital system files.. if they didn't the rom wouldn't boot.
[Epic 4G Q&A, Help & Troubleshooting] Jinded:
I've sometimes run into issues restoring system files from another ROM, so I usually don't use backups for those.
[Samsung Galaxy Nexus] jitajt:
I'll give it a whirl and report back with my findings. I have been reading some reviews on your kernels for the other phones and they have been all positive, looking forward to some great battery life.
[Samsung Galaxy Nexus] bradm23:
what is the recommended governor for best battery? Should a screen off profile be necessary
[Samsung Galaxy Nexus] franciscofranco:
Use the default. No, don't use profiles, they do more harm than good.
[Samsung Galaxy Nexus] kevguillot:
I got 2% drain for 10 hours last night! Pretty darn good if you ask me. I'm also running juice defender ultimate on aggressive setting to help out more. So far so good with this kernel thanks!
[Samsung Galaxy Nexus] jlsesler:
This looks promising. You ought to post this on rootzwiki as well. :)
[Samsung Galaxy Nexus] ro_explorer:
Guys .. please stop promoting other forums here ... please.

Who is interested in posting/reading in other places will do so. So, again, please stop promoting rootzwiki here.
[Samsung Galaxy Nexus] derrickonline:
Can I flash using CWM? I didn't see that anywhere. Must I wipe data or cache as well? I would love to test it out. Im looking for any battery life improvement I can get.

And did I read this only works with a 4.0.3 ROM?
[Samsung Galaxy Nexus] rohdawg:
Flash in recovery, yes, 4.0.3 only
[Samsung Galaxy Nexus] jitajt:
I opened and closed the camera app and used CPU spy and the majority of the time it spent was deep sleep. Then I rebooted this morning and didn't open and close the camera app. And I got the same results, doesn't look like that bug is present on my phone at least. So far I am getting good battery life using this kernel and juice defender.

sent from my new love, the Sexy Nexus.
[Samsung Galaxy Nexus] mcampbell:
I'd like to see some evidence to back up this claim. Granted that now the newer governors give you a decent enough screen-off profile built in that THAT profile may not be so much worthwhile, but for things like overheating profiles are damn sure worth the "good".
[Samsung Galaxy Nexus] bradm23:
I'm a little curious to why there isn't a kernel dev who has implemented smartassv2 yet. I used this with my Inc and battery life was very solid
[Samsung Galaxy Nexus] ghost_o:
My phone ran on nightly 7 for 3 days without needing charge. Go support this guy in the market if you agree that is incredible. That is the longest battery life I have ever had with any of my droid phones, and this is the most resource hungry of them yet.

Thanks Franco
[Samsung Galaxy Nexus] jlsesler:
There is one out there. Don't wanna promote another kernel in this thread though :p
[Samsung Galaxy Nexus] drtchocky:
So I am a total idiot... I rerooted and went back to stock. Flashed this but forgot that when I went back to stock I was in 4.0.2...

now my phone is stuck on boot screen... how do I get back to the old kernel. When I press volume down power up I get to ODIN Mode?
[Samsung Galaxy Nexus] sinik420:
Matr1x has it lol always switching between these two
[Samsung Galaxy Nexus] jknisley:
Press volume up, volume down, and power and hold them until you get the little wee android with an open tummy. That's fastboot mode. Here's a nifty little post about using fastboot mode to repush the stock everything on:

http://xdaforums.com/showthread.php?t=1399210

---------- Post added at 12:21 AM ---------- Previous post was at 12:20 AM ----------

I've been asking on the GSM thread (originally where this was) to no avail, but now I'm simply shocked to see an LTE phone do that? WTF did you do to get such incredible battery life out of this phone? Were your radios on?
[Samsung Galaxy Nexus] drtchocky:
Just installed Axiom's ROM on Rootzwiki but when I went to the market it said your kernel is not compatible and wouldn't allow me a download.
[Samsung Galaxy Nexus] fallingd0wn:
Running well on GummyNex 0.3.8. Thanks
[Samsung Galaxy Nexus] marathonman0730:
Picked up from the market.....very nice!!!! Thank you for ur work!

Sent from my Galaxy Nexus using Xparent Blue Tapatalk
[Samsung Galaxy Nexus] mike216:
Franco could you include interactive X governor? I hear lots of good stuff about it
[Samsung Galaxy Nexus] Alopez_45:
I been doing a search and can't seem to find anything. What does Colors+ do? Is that like Voodoo Control? :)
[Samsung Galaxy Nexus] reverepats:
Ohh I do. I literally calibrate after each time I install or restore a née backup. I do t think its anything harmful right now but we'll see what happen today