yashsingh1/xdaforums huggingface dataset:
[Galaxy S III I9305 (4G LTE + 2GB RAM) Q&A, Help & ] lpy:
Using a Telstra I9305T, I'm interested to know why this happens, and if it can be fixed.

The scenerio is: Streaming radio in a "H+" area. When entering a 4G zone, the zone will not automatically switch to "4G" unless the streaming is stopped, and the connection idle for about 10 seconds. It then drops from "H+" to "3G", and then from "3G" to "4G".

So basically, the phone will switch from "4G" down to "H+/3G" when leaving a 4G zone, which is expected, but the reverse will not occur unless the connection is idle.

Anyone else seen this problem?

Possible reasons...

- modem.bin needs improving?

- network bug?

- I9305T bug?

- ROM bug?

- standard behaviour?
[Galaxy S III I9305 (4G LTE + 2GB RAM) Q&A, Help & ] evantkh:
This also happens on Samsung Galaxy Note 2 LTE and Samsung Galaxy S3 LTE in Hong Kong, but it do not take so much time for it. However, it still needs 30 seconds to auto switch to LTE.

[YOUTUBE]7VHlk7hn07U[/YOUTUBE]

However, LTE phones are already on LTE network when booting in Korea

[YOUTUBE]tU_toOAmKFI[/YOUTUBE]

In July, I got SHV-E210S which is a Korean model of Samsung Galaxy S3 which supports LTE. However, it do not auto switch to LTE network unless IMS is available. I use Hong Kong SmarTone SIM and got the problem that I have to lock the phone to LTE and it is unable to receive calls.
[Galaxy S III I9305 (4G LTE + 2GB RAM) Q&A, Help & ] lpy:
hmm interesting. That first video demonstrates the same as what I've said...only entering 4G once the connection is idle. I guess the question is why it happens..
[Milestone 2 Themes and Apps] hdoraemonk:
Lockscreen of BB10 so cool. Who can port this lockscreen for MS2 :fingers-crossed:

This for Defy:

http://xdaforums.com/showthread.php?t=1982711
[Milestone 2 Themes and Apps] DolphinWing:
that indeed looks very cool
[Milestone 2 Themes and Apps] Tardigrada:
Just did it!

see in http://xdaforums.com/showthread.php?t=2155211
[LG Optimus Black] ogremount:
EDIT:

Do the following at you're own risk.Even though it works for me and there is no logical reason it wouldn't work for you.

My wife got a new L7 couple of Weeks back and i have been paying with it every now and again.

As the battery on the OB is experiencing bad drain lately i thought to look for replacement. Tried other battery with no luck and than last night thought what the hell i will try the L7's battery.

Hell yeah ! Fits nicely ( but the OB battery had to be filled a bit to fit in the L7 , just in the right corner about 1mm on 1mm).

Now to the nice part. As it is a new battery the self drain is gone.

And it is 1700mAh

Although i will have to return it to my wife as she is gonna be in a shock as her phone is gonna be dead before tonight :) The big question for me is is the L9 battery the same size and would it fit as well .
[LG Optimus Black] ogremount:
I forgot to mention with the original battery the current drain is about 1% every 2 minutes .

But this is due to me using the phone a LOT. At least one and often two charges a day for year and a half so long gone the 300 charges which are supposed to retain 90% of the original charge.
[LG Optimus Black] George Jetson:
can you take a picture of your p970 backcover battery?
[LG Optimus Black] ogremount:
Here goes the pics, sorry about the delay.

P.s. Pics are from the old trusty s8500 aka wave. L7 camera is crap
[LG Optimus Black] George Jetson:
So L7 battery is 3.8 volt our p970 battery is 3.7 volt.Cant it be any damage on main board?
[LG Optimus Black] ogremount:
Wouldn't think so. As both mobiles work fine with swapped batteries
[LG Optimus Black] ogremount:
And during charging voltage is way higher anyway. Remember 5 volt charger :)
[LG Optimus Black] SlashSpeed:
That's a nice find! Good job! Might buy a genuine L7 battery...
[LG Optimus Black] lean7:
Nice info, thank you!
[LG Optimus Black] ogremount:
I am glad to share :)

But as for the L9 looks like different shape and contacts positions
[LG Optimus Black] simaros:
Thanks gor info:thumbup:

sorry for my bad English
[LG Optimus Black] Navios92:
So is it safe despite the voltage difference?
[LG Optimus Black] ogremount:
So far so good. One day use and it is great. 4 hours + screen time compared to 2.5 (again worth repeating my original battery is degraded)

I even find data connection working better, but that might as well be fruit of my imagination.

Best part is my wife hasn't caught up yet .
[LG Optimus Black] xonar_:
Yes. Don't use it. Just because something fits doesn't means it is supposed to work. For instance I am pretty sure if I try I can fit my phone in my mouth. Is that good? NO!

You won't notice it short term but long term it will bite you and Lg can refuse warranty if it's damaged due to incorrect use.
[LG Optimus Black] rrgrrg:
super correct , if this was the deal lg simply would have included it at least in the models of today , but the main board will suffer on long terms of use :good:
[LG Optimus Black] ogremount:
Actually my neighbour is using razor xxx batery in his phone and that's half volt higher than his original battery.

The problem for the main board is not the voltage itself but the incoherent amperage and power consistence, and this battery is lg made so complies to their standard.

Again remember that the phone runs ok on charger which happens to be 4.8 volts without battery inserted.
[LG Optimus Black] ogremount:
*First post edited*
[LG Optimus Black] xonar_:
Of course it's not the voltage itself, but the increased voltage causes increase current and that increases heat output and that does damage your phone.

Try this yourself.

Create a two circuits with a two identical light bulbs. Use a battery one battery that is 1.5 Volts and use another thats 3 Volts. Which do you think will burn out quicker?

And the fact that it's 1700mAh doesn't necessarily mean it gives longer battery life it might just mean that it has a higher current output.

You can use that battery if you want. I wouldn't.
[LG Optimus Black] lean7:
It's 0.1v of diference, I don't think that could break the phone or something.
[LG Optimus Black] xonar_:
The heat output of the CPU is directly proportional to Voltage squared and since the change in temperature is equal to the Heat Ouput minus Heat Disipation the result will be a lot hotter than you think. The hotter it runs the higher the resistance in the circuits the more power you have to us to keep it running stable. Can you see why even a small difference in voltage makes a big difference.
[LG Optimus Black] ogremount:
following the very same logic, as battery drains voltage drops so CPU should running cooler wright?

Didn't think so.

Not disagreeing with you though. Just following your argument. Batteries are not perfect to start with. That's why there is so much details in the devices to make them usable.
[LG Optimus Black] xonar_:
To keep the CPU running at the desired voltage it changes the resistance as a too low viltage causes errors and instability (which is why it doesn't run cooler). Adding more volts to the total system causes a problem since thats more energy that needs to be transfered (It's gota go somewhere and it's definately not going back into the battery)

Yes batteries aren't perfect but any defects causes the voltage output to drop not increase. A batteries voltage output can change with up to 0.5 over that of the specified value but that value given is a measurement of the overal voltage. That 3.7 will on average still be 2.7% higher than the specified 3.6. Most of the time it will be fine but when the power usage peaks then it's really hurting your phone.

I was lookong for the mathematical relationship between heat and CPU decay so I can show you just how much your hurting your phone. Unfortunately its not something you can measure easily since the heat of the CPU changes per usage and you can't take average since if you run it cool for a long while and heat it up to the critical point you will have CPU failure and you can have a lower constant average that still haven't failed yet.

Sent from my LG-P970
[LG Optimus Black] ogremount:
I do have a lot of different devices running on batteries. All off them when fully charged exceed by far their specification. I mean by some times 50 %.

Example my beloved Eneliop 1900 batteries-they charge all the way 1.9 volts even though they are only rated 1.3V. Go figure.

That's down to how batteries work.

It all boils down to the fact that batteries are irregular and unstable.

Call it all you want.

The crucial point here its the kernel.

Would it allow a dangerous behaviour off the components our not.

Excuse my frivolous and completely incompetent jabbering.

I am in no way electrician or physician. I just happen to have experimented a lot with devices and put them to their limits(often with lethal end).
[LG Optimus Black] ontour:
Just did a full charge on my OB, 4.15V measured with a multimeter.

I think that a 3.7 to 3.8 will not harm the device, just my opinion.

I'm not an expert but this devices must have some dc voltage regulator to the desired output voltage.

Of course that the voltage regulator have their limits that shouldn't be exceeded.
[LG Optimus Black] xonar_:
They overcharge since the Voltage theyre rated at is for standard room tempreture and the rating is a guidelone for their average output voltage not an exact figur. The voltage you measure directly over the battery isn't the voltage used by the phone either since the battery has internal resistance that also factors in when the phnes connected.

The kernel does good job in handling power usage and spread but it can only do so much. Like I said before it's when it peaks thats the problem.

Sent from my LG-P970
[LG Optimus Black] morx:
:eek:

ROFL !!!!:D
[LG Optimus Black] Itssolo:
Battery

Not sure if i should try this or not ...

extra battery live look cool but still scared to crash my phone :rolleyes:
[LG Optimus Black] Huexxx:
Every circuit has a dynamic range.... 3.7 and 3.8 is pretty similar... 2.7% would be considered low tolerance...

I'm sure that if eneryone takes its fully charged batt, remove it from phone and test it with a multimeter, every batt shows differents values with differences greater than the quoted here...

I think there's no problem... also, when people buy a nonLG replacement chinesse batt... nobody says that maybe the voltage is different and it may harm your phone...

I would use it... and in long term... the mobile will be in a obscure dock with lots of dust...
[LG Optimus Black] ogremount:
The obvious risk would be to OC with battery with higher voltage. But most of the time i actually undervolt anyway as 800 or even 600 is enough for casual use.
[LG Optimus Black] fanghan:
Wait...so is it a L7 or L9 battery? Or does both work as well? L9 battery is 2100mah while L7 is 1700mah, they look like of different sizes too. I really dont care about the 0.1 extra volts to my phone; i just want a better battery life without my OB looking like some bloated pig.

Thanks!

Edit - Oops, i read the post wrongly >< ignore my stupid question.
[LG Optimus Black] pabgar:
I fully agree with You. Using: cheap and unknown batteries is much more risky thet using this L7 battery

You are completely wrong. mAh is a measure of battery capacity only. Current output or to be precise MAXIMAL current strengh is different parameter of battery ( i.e. is crucial in case of car batteries: for diesel powered engines must have much higher max. current strengh then petrol powered while same capacity ).

Yes but power disspation also depends from the internal resistance of battery.

Shortly saying this is dynamic process

You all forgotten about one thing. In some kernels it is possible to overvolt or undervolt the processor.

This means one - there is separate, programmable voltage stabiliser inside the phone. It will take care to supply propper current to the processor.

So: battery difference at level 0.1 volt is completely irrelevant. You may safely use this battery.
[LG Optimus Black] xonar_:
Yes. Cheap battery more risky but still using the wrong battery still have risks.

mAh is capacity. I never said it wasn't. But capacity is NOT battery lifetime. Current output of battery influences discharge rate. My statement stands.

The stabilizer works within parameters and if too much voltage.and/or current is given it will not be able to give correct amount of current and voltage. Depending on which type of stabilizer is being used it might change the current based on the assumption that the input is fixed. I don't know exactly what type of voltage stabilizer this phone uses so I wont say more on this.

Sent from my LG-P970
[LG Optimus Black] pabgar:
In theory U R right. In practice of battery powered portable devices: 0.1V is nothing important.
[LG Optimus Black] pinkllama:
Does anyone know where I can buy a genuine one in the U.K?

I bought one off Ebay, but I'd estimate that it was about 500mAh!! it lasted about 7-8 hours only on standby.
[LG Optimus Black] mihaiolimpiu:
This is really great, a genuine battery of higher Capacity?... Can't wait to buy one... the difference in voltage is negligible, so it's still super safe than using a ship made Chinese battery...

Are there any users using this battery? I'm really curious about the results!

According to this: http://www.gsmtop.ro/product.php?id_product=6846 Optimus True Hd P936 is compatible with L7 and is 1830 MAh!!! If someone knows a friend that has that phone it would be a great find as the OB lacks a decent battery with ICS and all now released!
[LG Optimus Black] ogremount:
Nice find mihaiolimpiu !!! Unfortunately it is not very popular phone around here and as such no way to test.
[LG Optimus Black] explor3r3:
i have 2 original battery`s from ebay , bought them for 12$ each if i remember ... (pack of 2 i found the link : http://www.ebay.com/itm/LG-Genuine-Battery-BL-44JN-for-Optimus-Black-P970-/250861903084?pt=PDA_Accessories&hash=item3a6888dcec) , if you will search a little you will found the original and the fake one , mihaiolipiu 16€ is too much ....
[LG Optimus Black] mihaiolimpiu:
@explor3r3: I already bought a original battery with 10 Euros, that's not a problem, what I've posted is a link to P936 compatible with L7 and it seems with our OB from my country, other users can buy from specialized sites or Ebay. For me, buying from Ebay it's out of the question as I don't trust it and with shipping it's usually a lot more expensive...
[LG Optimus Black] cemshit:
i did order one http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=390450093391 gold 2430 mah battery. i will share my oppinion when i got it
[LG Optimus Black] chuayx1:
That is very odd. I experience the 1% every 2-3 minutes if I am using the phone with 3G turned on. Original battery. Without 3G I get an acceptable drain of probably 7 minutes or so for a drop of 1%
[LG Optimus Black] iamwyim:
Really??I am using 3G for my phone as well. I was on a short trip during the Christmas Eve and have left my phone at home for whole day!!

I have found my phone drops about 10% every 12 Hours! Of course, I have received loads of greetings from my whatsapps during the time!
[LG Optimus Black] pythoner:
That type of Battery has already Proven to be a fake.
[LG Optimus Black] cemshit:
i know too bud :) i paid 8 dollar, that will be my second battery :D
[LG Optimus Black] arronov:
Okay, let's back to original topic :)

Sir, can you please share your experience about L7 battery usage on optimus black? any pros/cons? thank you :fingers-crossed:
[LG Optimus Black] ogremount:
Sooo after some use i can report no negative effects whatsoever. Phone temperature and battery temperature is the same. Voltage of the battery after full charge (switched of from the charger) is only fractionally higher - p970 4042 mV VS L7 4085 mV.

On a side note the L7 sees the p970 battery as charged 79 %when it is actually charged to 100 on the black ( phone being switched off and charged until it shows fully charged sign).

So not entirely sure if the Black is making any use of the extra 200 mAh.
[LG Optimus Black] -Sat-:
ogremount have you tried doing the opposite? Charging fully l7 battery with the OB and after put it in the l7? It shows that is fully charged?
[LG Optimus Black] ogremount:
I did that couple of times and either way it shows 100% Being charged in the L7 while switched off and put in the OB and Charged in the OB while switched off)

What i need is more precise battery measuring app . Any suggestions ?
[LG Optimus Black] tuananh14295:
thanks

thanks for share !
[LG Optimus Black] ogremount:
Ok folks bad news.

As i had a suspicion because of the L7 (with OB battery) only showing 87 percent charge and continuing to charge after battery showed fully charged in off state i went the other way around.

Fully charged the L7 battery in the OB and the OB battery in the L7 both in off states.

Once charged swapped them so they are both in their original phone.

And while the OB was showing 100 %the L7 was showing 87%.

I know that's not scientifical evidence but empiricly the same result two times.

So i guess the phone itself decides how much to charge the battery and not the other way around.
[LG Optimus Black] deadcaster:
So, it might be impossible to use a higher capacity battery for OB???
[LG Optimus Black] ogremount:
It might appear so. Unless there is some perimeter that is responsible for it and can be changed.

At this point i am a bit lost.

Please if someone has a bit more knowledge to step forward.
[LG Optimus Black] Arohdin:
Very good info. Though, I will probably go for a Mugen 1800 mah for optimus black.
[LG Optimus Black] kirigaze:
So it will be fine if we are using external charger :good:
[LG Optimus Black] ogremount:
I guess so.

It definitely lasts longer when i charge it in the L7 and use it in the OB.
[LG Optimus Black] redeemer01:
then where could I buy one?
[LG Optimus Black] Vaiet:
How about trying "Wipe Battery Stats" in recovery? Do you think it will help in some way?
[LG Optimus Black] ogremount:
No Vaiet it does nothing wiping the battery stats. Tried it several times.

It seems to me that LG has set the charging current values in the phone . And it doesn't read or it does not reflect the actual battery capacity.

Spoke with Huexxx about it but he doesn't know either. Re-flashed Zeus 7.04 just to try but it is the same. On the other hand the L7 keeps charging the OB battery ( It reaches 87 and it is stuck there) as long as you leave it plugged-in so obviously it doesn't reflect the actual capacity either.

So if any of you folks has an idea how to make the phone read the true capacity of the battery please let us know.

Redeemer : no idea where to buy one where you are.
[LG Optimus Black] MisterVik:
I think this might be the solution:

http://www.ebay.es/itm/BL-44JH-1900mAH-Standard-Battery-AC-Charger-Dock-For-LG-Optimus-L7-P700-P750-/180982867342
[LG Optimus Black] ogremount:
The problem is i would prefer one solution without having to take the battery out to charge it.

I have portable usb charger and charge on the go.
[LG Optimus Black] von Mandrake:
Actually, not true...

http://i.ebayimg.com/t/NEW-OEM-LG-B...==/$(KGrHqN,!icFB)eozsToBQrorgzGh!~~60_12.JPG

As we can see here, they don't even have the same shape. The picture on that website is distorted, just look at the LG logo on it.

Anyway, I found this one too...

http://www.ebay.com/itm/390586480289?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649

It's the battery for LG Lucid 4G VS840 (not available on my country). As it is a BL-44xx battery, I think it will fit our OB. I ordered today a cheap replacement battery for the VS840, to check if it works

edit: The LG Prada P940's battery is also a BL-44xx
[LG Optimus Black] von Mandrake:
Btw, did anyone ever bought one of those Andida batteries for OB? They're rated at 1800mAH. Ogremount, did you ever try them?

I saw a thread here about them, but only one user seems to have bought it
[LG Optimus Black] ogremount:
No i havent . I was hoping someone here or on HTCMania P970 forum will but so far no factual reviews.
[LG Optimus Black] von Mandrake:
Well, I've been reading about their batteries (Andida)...not specifically for our OB, as I couldn't find reviews for our model, but generally the reviews aren't very good...I guess I won't be the guy who buys one, as they're more expensive than many other models.
[LG Optimus Black] von Mandrake:
Hey guys,

so, this one http://www.ebay.com/itm/300776121023?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649

arrived yesterday. It's now finishing the first charge (currently at 97%).

It is a cheap replacement battery for LG Lucid 4G VS840.

I'll be able to say something about it within a few days
[LG Optimus Black] Grakel:
Awesome!

Let us know if you notice it lasts more than the original battery =)
[LG Optimus Black] karl_azytzeen:
It fits into stock back cover??
[LG Optimus Black] daroco:
looks very similar to this

http://dx.com/p/replacement-3-7v-1900mah-battery-pack-for-lg-4g-vs840-137750
[LG Optimus Black] karl_azytzeen:
doesent look similar... looks the same! and im 99,5% sure they are
[LG Optimus Black] von Mandrake:
Yes, they're the same battery.

And yes, it fits the stock back cover ;)

I'm still testing it daily, I'm not sure yet if it's worth spending money on it.
[LG Optimus Black] ogremount:
Von Mandrake, after 8-10 full cycles you can have the max expected battery life. If after that time you do not get improved battery life it will never be. Although hopefully it should give 5-6 hours screen time.
[LG Optimus Black] BlackPie:
How is it?I'm considering to buy one
[LG Optimus Black] von Mandrake:
Hey man ;)

Well, quite honestly, it isn't any better than our stock battery. In fact, I think it's slightly worse (10 to 20%).

So, if you're planning to buy a new battery...you'd probably do better by buying a stock battery for OB, or maybe a genuine battery for L7 (which I don't know if it works at 100%, but considering what ogremount wrote about it, I think it doesn't).
[LG Optimus Black] BlackPie:
what do you think about this?

http://www.amazon.com/Optimus-3500m...attery/dp/B005RO5928/ref=cm_cr_pr_product_top
[LG Optimus Black] von Mandrake:
Possibly good, as it has what it seems to be the required size for a bigger capacity (unlike the one I bought rated at 1900mAH, with the same size of a battery with a capacity of 1500mAH), but I never tried those batteries. Though, I think there's someone with it, on one of these threads about batteries.

Check on previous pages, or on the other thread about batteries ( http://xdaforums.com/showthread.php?t=1178310 )
[LG Optimus Black] karl_azytzeen:
I own a pair of them and I rate it between 3000-3200mha of charge (200-215% of stock OB battery) They work fine, but the cover is crap... It has an ugly glossy finish and are very weak, will crak with any small drop, mine has 2 cracked corners repaired with superglue. Anywai it is easy to fix, and for the price is the reason because I own 2. Also yourphone becomes fat and you dont have any case that fits it.
[LG Optimus Black] weirdwolf:
I thought I'll let everyone know of my experience with the same thing. I bought an L7 E610 battery for OB some 6-odd months ago. It provides great battery life. I have no problems of overheating or SOD or FC or whatever. It works like a charm and provides good output. It requires charge only 1 every 48 hours unlike my old OB battery which doesn't las for more than a few hours. :mad:

I don't know how could the new battery help. It is also the same power rating as the old battery (1500mAh). I think it might have to do with the improved retentive capacity of the new battery as old batteries tend to lose charge holding capacity over time due to repeated charge/discharge cycles.
[LG Optimus Black] Maniek8:
My mom has a L7. I don't see any difference when i'm using battery from it ;/
[LG Optimus Black] blubb.wsw:
Need to get a new one. I think I'm gonna try this :)
[LG Optimus Black] rajeshmk2012:
Just a thought ...

So for the charging problem of p970 not charging L7 's battery fully ..could be kernel driver issue.Can we take battery charging drivers from L7's kernel source and put it in p970's kernel and build them....I think this should fix the charging issue and we can use the L7 battery normally.