Develop Bugs

Anybody notice this?

/data/system/throttle? Anyone know what this does or what it can do? I was poking around with root explorer and saw this.
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I did some Googling on this and most of the info I found was people saying that this could be used to throttle data speeds. May or may not be true. I hope not.
Sent From My Evo Killer!!!

There was a thread in Evo section about this. We were deleting the folder/file and running speed test. Our speeds would improve, 5 minutes later the files would reappear and speeds would drop. The thread turned into a big argument about sprint and throttling, rather than why the files seemed to reduce speed and would rebuild itself.

Hmmm
3 runs of speedtest.net average 1.3
Delete files
3 runs again avg 2.3
Done on an airvana so fewer variables
Sent from my Samsung Galaxy S2

R1ptide said:
Hmmm
3 runs of speedtest.net average 1.3
Delete files
3 runs again avg 2.3
Done on an airvana so fewer variables
Sent from my Samsung Galaxy S2
Click to expand...
Click to collapse
You realize that on an airvana or airrave its using your home internet connection for data, right?

Hmm. I had briefly Googled this last night and saw that this had been placed on T-Mobile phones. Is there a possibility of getting rid of this or finding what is likely throttling our data?
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Daemontrain said:
Hmm. I had briefly Googled this last night and saw that this had been placed on T-Mobile phones. Is there a possibility of getting rid of this or finding what is likely throttling our data?
Sent from me using the XDA app
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Click to collapse
For ****s and giggles I removed this folder and ran a speed test.
No improvement.
There was some talk about T-mobile using something on their ROMs to throttle but that was later de-bunked as no longer the truth.
The fact is it's all server side, just like your home ISP.

I'm switching to Sprint in a week and getting this phone so I'm doing some studying. I saw this thread and figured I'd give some input.
We noticed this on the G2/Desire Z and yes, it originally was found to effect speeds - only after you hit the 5GB data limit. After that you were throttled. Removing the files disabled the throttle that is of course until the files were recreated. Eventually T Mobile figured this out or was informed of it and figured out another way to throttle us. It seems the use of this file isn't limited to T Mobile so as far as it's current use I have no clue, it seems like a junk file Google needs to remove from the OS. Of course this could all just be coincidence but that seems like a stretch.

mattykinsx said:
You realize that on an airvana or airrave its using your home internet connection for data, right?
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Click to collapse
You realize that if these files are throttling data that its on the phone end (not tower) so the data coming from an airvanna's 3G signal could still get throttled just like a tower, right?

I deleted the folder and noticed dramatic speed increases. Interesting. I'm going to pm some devs about this I think.
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Daemontrain said:
I deleted the folder and noticed dramatic speed increases. Interesting. I'm going to pm some devs about this I think.
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Click to collapse
On Evo's the folder came back..Check later to see if it came back..We couldn't get it removed completely.

Daemontrain said:
I deleted the folder and noticed dramatic speed increases. Interesting. I'm going to pm some devs about this I think.
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u can delete it it but itll keep coming back everytime. happened to me on my g2 on tmob. those ****ers slowed me down to 56k after i hit my 5gig limit. that actually makes the phone FC on things like market and gmail, i went as far as to filing a report to the BBB...= nothing, we even tried changing the read\write permissions on there, still a no go. good eye but let that file slip away painlessly and ull b glad u did.

I deleted it and I went from 600kbs to 200-300 lol so idk. Probably just coinsidence

[Q] EL30? Bugs!?!?

I know every epic is different. I know your modem deals with 3g speeds and 4g. I know we have different towers. I know this. But what i want to know is some of your opinions about your personal experiences with the new modem. How is going for you? Was it worth the "upgrade" from ei22? Experiencing any bugs? Performance?...I would have to go thru a lot to flash it so b4i go thru it all, i would just like to know what you guys think. Thanks!

On an Airave 2 I get about half the data speeds as I did on EI22 and EC05. YMMV
Sent from my SPH-D700 using XDA App

kennyglass123 said:
On an Airave 2 I get about half the data speeds as I did on EI22 and EC05. YMMV
Sent from my SPH-D700 using XDA App
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Airave really that neccesary?... I'm getting 1-2 bars in mah house and with 2/4 I get 1.6mbs on 3g?.... also how'd you get one pay for it?
Sent from my SPH-D700 using xda premium

Biggoron said:
Airave really that neccesary?... I'm getting 1-2 bars in mah house and with 2/4 I get 1.6mbs on 3g?.... also how'd you get one pay for it?
Sent from my SPH-D700 using xda premium
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Click to collapse
Got a dead spot in my house where there was multiple murders...lol. They gave it to me for free as long as your credit is good enough for an additional line. There is like $2 additional taxes a month on the bill from it.
Sent from my SPH-D700 using XDA App

I was not able to connect to 4g at all after flashin to EL30. Anyone else experience this?

I have wifi jumping on and off w el30 update. Not super happy. Never did it on anything other than el30. Yuck. I used Odin. Anyone else getting same thing?
Edit: after flashing different el30 rom's last night and having wifi issues w all of them I chose to Odin el30 today and much to my surprise...wifi problems. I reset my router and everything is fine. Very odd as no other Tom caused this issue and other phones and devices connected fine. Crisis averted haha

I had that with signal and 4G, my wifi was fine.
Sent from my SPH-D700 using XDA App

WHAT???
Since I've made the jump to EL30, my 3g speed has been as good as 4g speeds(had I had it in my area), GPS is pretty good(alot better with GPS fix), With GPS Status, I got 10/11 locked Sats inside my house. 6/7 before installing that. battery life...considering i'm using the 1800mah from the touch, is great. Haven't tried with the 1500mah cause it's almost 2yrs old.
On another note, there was a issue that I'd like to point out. I checked my Market apps and found 2 weirdly named apps that's been renamed as 2 of the systems' apps...Video player and system updates. Which had a review of 1.5 because they were consider as spyware by 100% of reviewers. I had to use TB to first freeze, then uninstall them both to get them removed from my Market apps list. No other way would even work.
Other than that, Stock, Rooted, Doedexed EL30 Rom is great for me. As they say, YMMV.

I get higher TWS percentage with EL30 than with EI22 modem. I'm averaging between 5-15% TWS on EL30, whereas on EI22 I would average 1-5%.
There are many times when I wake the phone up and i'm at 0 bars, then it takes a good 20-45seconds to get between 1 and full bars. (Depending on my location at the time.)

Hmm...interesting..i just posted about this in another thread. i bricked my phone...brought it back..im rooted...and actually still on stock el30..the battery life is actually good...the signal is better..and im enjoying it actually...for the time being..thanks for everyones input...gotta love our community!!

Battery drain

Com.android.phone seems to be waking up my phone ALOT. As you can see in the picture, it is keeping my phone awake. What can be causing this? I have uninstalled apps and factory-reset to no avail!
Sent from my LG-E970 using xda app-developers app

I noticed the same thing. Someone mentioned in the battery life thread that this could be related to fast dormancy. I was able to temporarily stop the alarms counter from incrementing by turning off mobile data and toggling airplane mode. Of course this is only useful if you have wifi available. I'm not sure how it will behave longer term.
I have a Microcell at the house to account for poor reception and I've noticed that when I leave the house it does not always pick up the LTE network and toggling airplane mode fixes that too.
It seems to me that there is a fast dormancy issue at play since the Microcell is 3g only.

From what I am seeing, and correct me if i am wrong, but our devices are lacking fast dormancy. I cannot find it and there is nothing in our build.prop. Again I might be missing it but that is a big problem. If someone has it on there phone can they upload it for those of us who do not? Thanks!

It may not be a dormancy issue, bit this seems to me to be 3g related. In some very brief testing, I didn't see the alarms when I had lte. My workaround for the moment is to keep mobile data turned off when I have WiFi available.

For what it's worth, I've been trying to track this as carefully as I can and the common thread seems to be when the mobile data connection is UMTS. If it is, then the phone process seem to alarm several times per second. I've been on the phone with at&t and LG much of the day. I'm supposed to go and trade my handset for a new one and see if the problem persists. If it does, then at&t says they will escalate with LG for a software fix.

Yeah definitely post if that improves it. If so I will trade mine in as well
Sent from my LG-E970 using xda app-developers app

Check what type of network connection you have. It it's UMTS, then I bet you're also seeing the alarms incrementing. It would be good to have confirmation of my own observations.

When in use, mine is at hspap. Then when usage stops, its switches from hspap to umts then hsdpa
Sent from my LG-E970 using xda app-developers app

Can you tell if the alarms are incrementing when you are in UMTS or HSPAP or both?
That's what I see on mine. It was more obvious since I spend a lot of time on a Microcell which is UMTS only.

Mine is alarming in every mode. I do not have lte here but every mode I previously listed is alarming equally
Sent from my LG-E970 using xda app-developers app

Just thought about this but mine did not start this until I used the koren root method to root my phone.... Going to unroot and see what happens. Sounds crazy but it is plausible
Sent from my LG-E970 using xda app-developers app

Problem is that without root, better battery stats won't show you the alarms.
But if you can tell the difference in the battery usage...
Let me know, I'd rather not have to reconfigure another phone.

Battery is lasting much longer today. Still not great though.
Sent from my LG-E970 using xda app-developers app

I traded my phone this afternoon. I rooted and I'm still getting stuff set up.
As I expected, I'm still seeing the phone process incrementing alarms as viewed in better battery stats.
I'm expecting a call back from level 2 support from AT&T on Monday and I will work with them to put the screws to LG to make sure that this gets fixed.

Hopefully it will be resolved in a timely manner
Sent from my LG-E970 using xda app-developers app

So now I'm bummed out.
LG says that the phone is actively seeking a 4g signal and that is causing the drain. They also say that there is no way to disable 4g to alleviate the issue.
AT&T 2nd level support said that they don't have a way to escalate this issue at all.
So it seems that the choices are to roll the dice and deal with it until the anticipated software update becomes available and see if it gets fixed, or return this phone and get something different.
I haven't decided what to do yet, but I've been looking at the HTC one X+ that started shipping today that already has android 4.1.

Just remember with the one X+ that the tegra 3 is not much faster than the dual core snapdragon so it is a big step down. It was my other choice besides this phone. A lot of research.
Sent from my LG-E970 using xda app-developers app

Yeah...I've been looking around and come to that conclusion. I'm leaning toward waiting for jellybean and hopefully cyanogenmod support.

No, the Catlog shows that phone doing the fast dormancy thing every 2 seconds.
Till this moment (And this phone) i didnt even know such thing exists.
Oh, where is a quote i quoted?
Catlog clearly shows the programming skills of LG engineers

Ah that is what I suspected. I wonder if there is a way to disable it
Sent from my LG-E970 using xda app-developers app

4G=> Hot Screen/Fast Battery drop/Other?

I"m on the ROM per my signature. My home is not in a 4G area.
Last night I was in a 4G area, and not sure if what I experienced is expected; or if not if it has to do whith my ROM>
First off, I lost data connection and had to reboot in order to re-establish connection to data, a couple times. I also found that my screen more so than the back (with a think battery) got quite hot. I also noticed the battery dropping quick.
I suspect a possiblity of poor signal where I was at. Did not make any calls. Now that I think about it, the signal bars was not a full 4 bars.
Just wondering what others think.

I also would like to say I'm experiencing the same issue. My battery is much better now only because I turned off LTE. Just a temporary solution. I'm gonna follow this thread to see if anyone can help.
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Deggy said:
I also would like to say I'm experiencing the same issue. My battery is much better now only because I turned off LTE. Just a temporary solution. I'm gonna follow this thread to see if anyone can help.
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
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Well, I was up in a different area last night that had 4G, and I had 3 bars. The phone battery did OK, and I didn't have such a hot screen. But it was New Years Eve dance, and I didn't take time to try to communicate over Internet.
But it leaves me feeling that my issue was that the 4G was not good coverage where I was at before, May be a while before I"m in the same area. But I'll keep updating as I experience different 4G connections.

[Q]4G data speed very slow during call

Hi, I have a galaxy S3 with T-mobile. I'm in a place where I have excellent 4G speeds (about 5-6 Mbps :speedtest), I noticed that when I'm on a call the 4G data speed drops to useless speeds. I can barely open a website or download an app. Speedtest shows like 500+ ping and about 500kbps download which is NOT constant (goes up, stops, goes down, etc). Real speed is way less than that. Websites don't open or take forever.. Is this normal? I am using stock rom (but also happened with other roms). I went back to stock thinking that this was a problem with other roms only, but the same thing happen with stock rom. Any ideas/clues/solutions? thanks in advance

Long ping times is normal due to how it operates. But only 5-6mbps? That's pretty slow. Most get averages of 13-18mbps and some get averages around 25.
Try the different modems to see which will be better for your location.
Sent from my SGH-T999 using xda premium

DocHoliday77 said:
Long ping times is normal due to how it operates. But only 5-6mbps? That's pretty slow. Most get averages of 13-18mbps and some get averages around 25.
Try the different modems to see which will be better for your location.
Sent from my SGH-T999 using xda premium
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So, its kind of normal to get slower speed while on a call?

It would seem a logical conclusion. But I've never tested it. But I've never had anything not load or go slow enough for me to notice. If I think about it on my next call ill try to test it out.
Sent from my SGH-T999 using xda premium

DocHoliday77 said:
It would seem a logical conclusion. But I've never tested it. But I've never had anything not load or go slow enough for me to notice. If I think about it on my next call ill try to test it out.
Sent from my SGH-T999 using xda premium
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Ok thanks, The problem here is that I find it way to slow.. lets say I'm downloading a file with no phone call going and I get 600KB/s, during I call I get like 16 to 40KB/s at most... It's like having dial up again... way to slow.. I think something is not right but can't figure out what, since I reverted back to stock wiped everything and also formatted the system after installing stock..

Have you checked your imei or ever lost it?
If not you should really try the different modems.
If this is a recent development you should also call support to see if they have any tower issues in your area.
Sent from my SGH-T999 using xda premium

DocHoliday77 said:
Have you checked your imei or ever lost it?
If not you should really try the different modems.
If this is a recent development you should also call support to see if they have any tower issues in your area.
Sent from my SGH-T999 using xda premium
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IMEI still intact, and have never lost it. I will try with different modems thank you! I'm not sure if this is a new issue since I didn't use my internet as I am using it now while on a call before, also I moved from Puerto Rico to the states for a few months, so there are many variables at the same time. But will try with the modems.
Another question, when I odin Stock (not rooted) ROM does everything (incl. modem, kernel, etc) goes back to stock?

fireboypr said:
IMEI still intact, and have never lost it. I will try with different modems thank you! I'm not sure if this is a new issue since I didn't use my internet as I am using it now while on a call before, also I moved from Puerto Rico to the states for a few months, so there are many variables at the same time. But will try with the modems.
Another question, when I odin Stock (not rooted) ROM does everything (incl. modem, kernel, etc) goes back to stock?
Click to expand...
Click to collapse
Good luck.with the modems! It takes patience, but is worth it in the end!
Yes, Odin flashing the official firmware will set everything back on stock.
Sent from my SGH-T999 using xda premium

Hello, spent the whole day testing out every single JB modem from your post and none of them solved my problem... did find better speeds with some on them while not on a call. But as soon as I'm on a call the speed drops to about 47kbps, looks like a cap or something because I get constant speed of 47-49 kbps. Sometimes it goes over the cap and works normally but for a few seconds then the speed drops and its not constant anymore until it reaches around 47kbps... This is so frustrating... is there anything else that I can try out??
Sent from my SGH-T999 using xda app-developers app

fireboypr said:
Hello, spent the whole day testing out every single JB modem from your post and none of them solved my problem... did find better speeds with some on them while not on a call. But as soon as I'm on a call the speed drops to about 47kbps, looks like a cap or something because I get constant speed of 47-49 kbps. Sometimes it goes over the cap and works normally but for a few seconds then the speed drops and its not constant anymore until it reaches around 47kbps... This is so frustrating... is there anything else that I can try out??
Sent from my SGH-T999 using xda app-developers app
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Click to collapse
Flash the LJC firmware package. Third firmware link in my signature. This is for SGH-T999 (d2tmo) only. Unsure about the download cap while talking on the phone. Aren't the two separate? Cell and data, right? Shouldn't be a cap then, but I've never been talking on the phone while downloading a file. I will try it if I think about it tomorrow.
5-6Mbps is not bad. It just depends so much on where you are. My fastest test ever was the other day @ 14.4Mbps. It's not a big city, but it's sizable. It's usually under 10Mbps in that location. And normally less than that everywhere else in the area. There are some areas that put me on Edge. Might as well just turn on airplane mode. Because T-Mobile's Edge... is actually worse than no data connection at all.

Thank you, will try that tomorrow. 5-6mbps is fine for me but that is without call. While on call is like 0.37mbps constant or really bad ups and downs.. is like edge (worst than not having connection at all).. anyways will try and report back. Thanks again
Sent from my SGH-T999 using xda app-developers app

Sorry I couldn't remember this before, but I have a theory that could explain what's going on there.
Voice calls and 2g (GPRS) both share the same frequency spectrum. I remember doing some 3g research in the past and one of the benefits to the introduction of 3g was more overall bandwidth for all, even those left on 2g. At the time, 2g data service was greatly impacted by how much voice traffic was going across the network at any given time.
During peak voice call times, there was less bandwidth for mobile data users because the tech was designed to give priority to the calls. This meant even slower than usual 2g data speeds.
But as people moved to 3g, there were less using 2g for data lessening the impact caused by voice and sms communications.
So what I'm getting at is when you are on a call, that call is going across 2g frequencies, meaning you are connected to 2g. (Though 4g data should still be available to you regardless. But it may have something to do with what you're experiencing.)
Keep in mind that this was 3 or 4 years ago. I'd think that it'd work differently now. But it is possible that they never changed the fact that voice shares its spectrum with 2g. I could be seriously off with all of this, but I still thought I'd mention it since it would make a little sense with the speeds you're seeing.
The thing is, the S3.is capable of using DC-HSPA (dual carrier) which means it can use 2 different signals at once (one from T-Mobile, one from a partner carrier) for greater speeds (HSPA+42). So I don't understand why it won't use this same tech to give you better data speeds while on a call.
I know I've used mobile data while on the phone before, and never felt like the qos was lacking. But I never speed tested it either.
The more I think about it though, the more I'm thinking it's either firmware (see aerowinders post above), hardware, or you're connecting to a tower that either has problems or hasn't been upgraded in a long time. I don't believe that what you're seeing is normal operation.
Of course every bit of this is speculation at this point. Hope no one thinks I wasted their time with it. I thought it may spark some ideas though!
Sent from my SGH-T999 using xda premium

I was looking up some information and ran across this. Figured Id link you to it since it is directly related to your problem.
You can pretty much ignore my above post! LOL
T-Mobile Support Document - Using Voice and Data Services at the Same Time
Basically, it looks like you should call Tmobile.

Tried with the file you provided and still the same results.. I guess I will have to call tmobile to troubleshoot this problem :/ thanks tho
Sent from my SGH-T999 using xda app-developers app

Good luck! Let us know your results if you don't mind.
Sent from my SGH-T999 using xda premium

Hello, I still have not called customer service, but I'm going to be back where I din't have any problems next week. I'm going to test it out there. If I don't have problems there, then it's this area the one with problems. Anyways I will let you all know my findings.. Thank you all for the support!
Edit: I just confirmed that it works perfectly fine where it used to worked fine. It must be the new area where I moved recently that has issues. Thank you all for your time and help.