yashsingh1/xdaforums huggingface dataset:
[XPERIA X10 Q&A, Help & Troubleshooting] Mraider8:
Hey Everybody.Last Week I Unlock My X10 bootloader And Instal TUG-SIDE Gaming Rom.EveryThing Was Doing Fine.1 Day My Friend Told Me to give my PES2013 Data Files To Him.So I Attach my x10 to his LAP-TOP(Fulll Of Viruses)i didnt know that his laptop is full of viruses.any way i was in the way to home that my xperia turn d off and restart in kernel Logo.a Try Seus.Pc Campanion and flashtools.12flash files and I Didnt get Any Respond.it just Stuck On Se Logo And Restart.I Find A file with Android 1.6 i flashed with flash tools and it did work perfect my phone will boot up again but i cant update it to any other roms every time i try to update it will stuck on Se Logo Again...Please Help Me Android 1.6 Is Verry Oldddddd.....
[XPERIA X10 Q&A, Help & Troubleshooting] NuLLV01D:
Well, In my opinion, a windows virus can do absolutely NO damage to a Linux OS like Android [Execption: A Java-Related Virus]. So, that shouldn't be a problem.

P.S. You've posted this questions twice, which FYI, is Spamming.
[XPERIA X10 Q&A, Help & Troubleshooting] Vazelos:
Try flashing the CMX10 ftf version if you managed to repair it that way...
[XPERIA X10 Q&A, Help & Troubleshooting] kassimselamat:
U can try flash back to x10 custom rom using UPDATE SERVICE SETUP

I cannot post link this is my first post..you can find that at google

click thank button if this help you
[XPERIA X10 Q&A, Help & Troubleshooting] uchithisanka:
Download x10 aro 2.3.ftf

For x10 aro try to google it.

After download flash this

this will help you sure;)
[XPERIA X10 Q&A, Help & Troubleshooting] Toledo_JAB:
Please do NOT make duplicate threads for the same question, and remember that ALL question threads are to be posted in the Q&A

Thread moved & closed
[Galaxy S 4 General] pintycar:
Very nice findings! Thanks for sharing them.

Not only what you say about longer charging time, but also discharging may occur (it has with me) while connected to the USB. I left my phone with USB tethering and it shut itself down after a couple of hours (it was low on battery already). I wanted to keep all the accessories in "new condition" in case I sell the phone in a few months, but I guess this justifies using the official charger and usb lead.

I hope someone can shed some light on the detection mechanism or the particular characteristics of the official cable so it can be replicated in generic ones.
[Galaxy S 4 General] olaf63:
From your findings, also Appe 2,4A charger has some control on the cable used, thanks.
[Galaxy S 4 General] spark001uk:
Yes, but you won't be able to get more than about 0.75A out of it even with the samsung s4 cable.
[Galaxy S 4 General] follo:
You could try to add an extension cable to check if the charging system needs exclusively an original samsung cable from the charger to the phone.

Original samsung charger => extension cable male/female => original samsung cable => phone

PS: is there an app to check the charging current?
[Galaxy S 4 General] spark001uk:
My experiments used an extension cable, that's the one I made into a breakout cable. So no it doesn't change by adding a cable.

There is an app, called galaxy charging current, which I tried also. In the 0.75A results above it showed a max permissible current of 1000mA, with the fully samsung setup it showed 1900mA. In the lower scenarios is showed up as 460mA. Other than that it doesn't tell you anything, it literally just shows you a max possible current, not the actual current it's drawing.
[Galaxy S 4 General] spark001uk:
I've found out what the issue was, my generic cable was obviously a cheap one and wasn't shielded! I have edited my original post to re-explain.

Also I did a further test on a PC usb port - the Samsung cable allowed for 500mA, but the unshielded cheap one only allowed about 350mA, so (as pintycar found out), the phone actually carries on discharging in this case!
[Galaxy S 4 General] demusss:
Interesting post.

I've been trying to mod a car charger so that the s4 draws more than 300mA so far unsucessful. I'm going to add in the 82K resistance and see what happens.
[Galaxy S 4 General] wmccann2:
Hi,

Using a 5a digital bench power supply, I took a normal micro USB cable, cut it in two, added in the 82k resistors and tested.

Before: 450ma, after 1.73a

Then using a clamp meter I tested it with a 2amp Asus tablet charger - it varied between 1.48 and 1.61 amp.

I have since built a few more cables - one to use in my car (again 2 amp charger).

All in all, it works very effectively. Thanks for the initial research (saved me having to open my charger.)

BTW I suspect it is the charger where the resistors are, not the cable, otherwise the phone would try to pull 1.5a + from a laptop if you connected it.

Left my samsung cable at work so will test it tomorrow (if I remember)!

W.
[Galaxy S 4 General] Paparasee:
Interesting. So basically for us laymen, you are telling us to use the original charger and cables to the extent possible ... right?

Can you clarify to me what an unshielded cable is? Maybe with a picture? I've got a blackberry's cable at work connected to my PC.

At home, I also have a cable and charger that I got with my Nexus S (I think this says Output 5.0V ~ 0.7A).

Would this be a problem or can I get by with these?

Thanks :)
[Galaxy S 4 General] Xphome:
I've been using the Samsung cable+charger+USB extension cable and charging the S4 usually takes about 4 hours, I'm going to try with just the Samsung cable next time and see if it makes any difference since people are saying that theirs can be fully charged within less than 3 hours.
[Galaxy S 4 General] wmccann2:
Hi,

I believe (guess work here ) that only the original charger "needs" a shielded cable - could be checked by shorting the ground and shield on one side and see if it works at the higher current - if I am bored I may do it - it probably checks the shield and limits the current if it is not there (note I have not tested this so only going by the first posters findings).

BTW a shielded cable has a wire mesh around the 4 internal cables - this mesh avoids external interference messing with the signals. Can't see it affecting the charging though BUT shielded cables tend to have thicker internal cables so could be related to this.

I have it charging at 1.7a on an unshielded cable (thought he power strands are thicker than average) Shielding should only affect the data transfer speed, not the charging current.

If the Nexus S has only a 700mah charger then this will not be able to provide enough current for high speed charging and could easily burn out - nice smell, dead charger, not much else. therefore only use a normal unmodified usb cable (and it will charge at about 450mah).

W.
[Galaxy S 4 General] dandan_00000:
all this would eexplian why the charger that camewith my S2 dosen't appear to charge my phone fully over night...
[Galaxy S 4 General] Drukkie:
For what it's worth I'm charging with a Note 1 charger...a thick shielded cable via the S3 docking station....and getting 900mah...

will get my original cable tonight and have a go tomorrow...
[Galaxy S 4 General] DaveG46:
interesting read, my s4 lead and charger are still in the box and I'm using my nexus 10 ones phone charged from about 30% to full in just over 2. may have to change the old HTC £2 lead I've got connected to my works pc then, maybe why it's struggling to charge when playing music. guess this is one way to get people to buy more expensive cables
[Galaxy S 4 General] heliocrux:
Very interesting read, thanks TS.

My original charger and cable set is still in the box; I've been using my Mom's old Galaxy Note charger.

I'll try the original cable + wall mount and see how fast it is compared to my current charger.
[Galaxy S 4 General] follo:
Can you show me your final cable with a pic? Thanks
[Galaxy S 4 General] coolraghav:
After this thread I have stopped using my blackberry bold cable to charge s4 and of course the cheap one too.. thanks op!
[Galaxy S 4 General] Entropy512:
I'm not sure if shielded vs. unshielded is the difference - probably wire gauge is the difference.

For example, if you shop at Monoprice, you have two options for USB cables: 28 gauge cables, and 24/28 gauge cables.

For wire gauge, lower is larger - the 24/28 gauge cables have thicker wires for the + and GND lines. A pure 28 gauge cable is likely to drop voltage a bit at high currents, and my observations have been that most newer devices, ESPECIALLY Qualcomm-based ones, are VERY finicky when it comes to input voltage drops.

As to the charger itself:

Apple chargers are almost guaranteed not to charge at full current, as they don't conform at all to the USB battery charging standard. Some newer Android devices do have at least partial detection of Apple chargers, so they may charge at 1A if an Apple charger is detected (any Apple charge, even 2.1A ones).

It sounds like the included official charger is a tablet-compatible one. Samsung tablets expect D+ and D- to be held by the charger at 1.2 or 1.8 volts (I forget which). As a result, Samsung tablets will not charge from standard chargers (like an N7 charger), but standard devices (like an N7) will charge from Samsung tablet chargers.

Now, the question is: Does the GS4 *require* a Samsung tablet-style charger, or did Samsung just include a tablet-style charger because it's backwards-compatible with standard devices? (less part numbers to track in inventory).

A useful pair of points would be: Using the same cable, does the Samsung charger behave significantly different from a Nexus 7 charger?
[Galaxy S 4 General] Entropy512:
I missed this post on my first read-through: What happens if you just short D+ and D- when using the bench supply?
[Galaxy S 4 General] atfaniqbal:
My S4 Active LTE

My S4 i9295 Active LTE always displays 1200ma max whatever charger i may connect i.e. 1.2Amp or Samsung Stock 2.1 Amp.. Dont Know Why ? Any Clue Guys?????:confused:
[Galaxy S 4 General] jaswinky:
Are you seeing the displayed value with screen on or with screen off (using log functionality)?

Enviado desde mi GT-I9500 usando Tapatalk 2
[Galaxy S 4 General] atfaniqbal:
Galaxy Charging Current

How do i use log functionality when i've connected my phone to charger and not to a pc.:confused:
[Galaxy S 4 General] jaswinky:
That's a function inside current widget app so that you can store the net battery charging value while screen off and watch it after that test. If you don't do that, if you get the value directly from the screen on, you will see only the value for the battery input, not for the device input (battery +cpu+screen on consumption).

Enviado desde mi GT-I9500 usando Tapatalk 2
[Galaxy S 4 General] crackerben:
I found that wile using my factory Samsung cable with 82K resistors and a 5v bench supply my GS4 Active would only charge at 600ma. when I increased the voltage to 5.25 and cycled supply power the current increased to 1.3a. I removed the resistors and left the data lines shorted and had the same readings. It appears that perhaps the device draws increasing current till the voltage drops below a threshold then stops there? I modded my car charger to produce 5.5v and it is now charging at higher current levels. Incidentally the 8" usb cable that came with my petzl headlamp will charge the device at close to 2a. Anyway my observation is that the voltage affects the charge rate and the resistors had no effect. Your mileage may vary.
[Galaxy S 4 General] jaswinky:
Only Infinite resistance between data pins (open circuit) determines whether our s4 consider the charger as a non Samsung original charger, it is, only if s4 detects any conductivity between data pins (non infinite resistance) will consider the charger as original and will demand max current (1,9A). that's the reason why resistance value between data pins has no effect (obviously it will be any mega resistance which will make the same effect as infinite or open circuit, but i don't know where is the limit).

About the cable, i also have noted some original cables come defective, maybe with any non desired electrical impedance, and changing the cable by a minimal quality one fixes it. Maybe that is the reason why increasing the voltage source you get more current, you are supplying the voltage falling due to the impedance poor cable.

Enviado desde mi GT-I9500 usando Tapatalk 2
[Galaxy S 4 General] norml:
Can you guys recommend a site where I can purchase parts like usb/micro usb connectors, cables, etc, preferably in the US? Found my old soldering kit and want to make my own cables, otg cables, maybe a micro usb jig, etc.
[Galaxy S 4 General] djcristi:
if you would've read my post first, you wv understood it.
[Galaxy S 4 General] mmethw2003:
Good one mate !!!!!
[Galaxy S 4 General] bala_gamer:
was trying to charge with the stock samsung cable/ capdase shielded data cable, both got capped at 1200ma on my 9505 all the time, just tried charging with a local data cable with no shielding or whatsoever and surprisingly(or wierd :P) the charging current is back to 1900 ma all the way
[Galaxy S 4 General] chickentuna:
Mate I have zero knowledge when it comes to electricity so I'll ask you a dumb question. How does the no shielding data cable looks like?

I'm trying to find a good data cable locally(I'm from the Philippines btw.) but all I can find here was cheap chinese knock off's that wouldn't even charge 1000mA. Best that i could get from those cables with the stock Samsung charger was a pitiful 500mA.

Would you recommend a capdase usb cable? As long as it charges at full 1.9mA i don't mind the brands and as long as it's not Samsung of course.

My stock samsung usb cable is crap. At first it charges at full 1.9mA with kt kernel's charge limit disabled. But now it only charges for 900mA at best. This piece of crap cable got replaced 2 times already and my accessory warranty ran out a few months ago so I'm looking for good usb cables to get
[Galaxy S 4 General] bala_gamer:
a shielded cable will look like this inside

am not sure what cable i can recommend because even a quality cable from capdase is not going beyond 1200ma at some point. Better disable screen on charging limit on the kt kernel and most quality cables will work fine
[Galaxy S 4 General] MonkeyTime:
Does anyone know if there's a way to increase charging rates through an mhl cable?

I'm using an AppRadio 3 with full mirroring, but only get 300ma charge max no matter how many or expensive a cable I try.
[Galaxy S 4 General] jaswinky:
What about the charger? What charger are you using (brand and specs)?

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[Galaxy S 4 General] MonkeyTime:
It charges thru the head end unit via the mhl cable. Other phones don't have this problem, just the Samsungs so I don't think it's an available current issue.
[Galaxy S 4 General] jaswinky:
As a charger, maybe mhl cable must be Samsung branded... You could try Perseus kernel which is able to change input current for all situations...

Enviado desde mi GT-I9500 mediante Tapatalk
[Galaxy S 4 General] MonkeyTime:
I'll look for that kernnel and see if it's compatible with the Hyperdrive Rom I'm using.

Unfortunately I did try a Samsung cable, didn't change anything.....

Thanks,
[Galaxy S 4 General] 1samek:
I only dropped by to say my S4 is charging ridiculously slow after KitKat (4.4.2) upgrade.

On 4.3 it took him about 2 and a half hours fro full charge and now it's about 5 hours -.-
[Galaxy S 4 General] Andy0625:
I'm getting around 3a charging rate as shown in the battery monitor widget apps. Is this even accurate? :confused: I read that most are getting around 1.5 - 2a.
[Galaxy S 4 General] Rob2222:
Hello,

must not be the only reason. A user in a german board realised, that the original samsung charger raises it's own voltage when current from the phone is drawn, to equalize cable resistance loss.

So if you want high charging rates, you (not only) need good cables and connectors, you maybe also need a intelligent charger that has this functionality.

BR

Rob
[Galaxy S 4 General] Tjalling:
Damn, I'd really like someone knowledgeable to chime in on this. It'd be amazing to charge my S4 with 3A, let alone 5A (the maximum under USB 2 specs). WIthout blowing up my phone, preferably.
[Galaxy S 4 General] Rob2222:
Battery Monitor Widget and Android Tuner can NOT measure the current on the S3 and S4 devices. These tools use the time it takes to raise 1% battery and the battery capacity. With these two information BMW and AT _calculate_ the current. But the battery percentage at 1% is not very accurate so the current rating from BMW and AT are not very accurate.

It is more accurate when you average the values from maybe more than 40-50% battery charge difference.

Just use the app "galaxy charging current". It shows almost the correct current rating, _when_ your battery has less than 75%. If your battery has already over 75% then the values of galaxy charging current can be incorrect, too.

The problem is easy to understand. S3 and S4 have not the needed hardware to measure the battery current.

All 3 apps here use workarounds. BMW and AT try to calculate current from how fast battery % go up.

Galaxy charging current shows the "maximum current" value that the kernel is setting, depending on the input _voltage_.

If you use a 300mA charger and the S4 trys to draw 1900mA, the voltage breaks in. The kernel recognizes this and lowers the drawn current in steps until (300-400mA in this case) there is a stable voltage. So the kernel SETs the input current depending on the input voltage, but from the measurement point of view, it only can _measure_ voltage, not current.

However, this is also only a value _set_ by the kernel and not a _measurement_.

But when the phone pulls full current from the charger (<75% battery), then you can assume that maximum current set by kernel is really near the real current value the phone draws in this second.

So if you wanna check how good your charging system is, simply connect it when the battery has less than 75% and check the rating shown in "Galaxy chagring current". Thats the most accurate you can do on S3 and S4.

BR

Rob
[Galaxy S 4 General] Andy0625:
In that case, I believed this little device below will be far more accurate than using any apps. Might get one to explore.

Anyway,thanks for sharing mate. :good:

http://www.dx.com/p/usb-av-usb-powe...r-translucent-blue-silver-235090#.U2VCI_mSz6U
[Galaxy S 4 General] djcristi:
not really, because there will be a voltage drop on this tool and the phone will lower the current, the best current measuring method is with a clamp meter or a small current transformer.
[Galaxy S 4 General] MonkeyTime:
Maybe this is a silly question and I'm overlooking something simple, but what do the kernels with "fast charge" enabled change for us?

I've tried two and don't see a difference, unless I've missed something on the enabling end? Shouldn't I see higher charging currents with this enabled?

Just bought an official Samsung hdtv adapter, but I can only get 300ma thru it no matter what I power it with. That's not enough to keep up much less gain charge...

Sent from my Hyperdriven S4!
[Galaxy S 4 General] jaswinky:
If you always charge your device with stocks Samsung charger and a good cable, a fast charge kernel doesn't change anything for you... It only is useful if you want to charge your device with a lg, Nokia, bb or unbranded charger, or a USB port, to get max current the charger can supply. To do this once installed the kernel, you need to activate fast charging using any kernel tweaks/configuration app.

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[Galaxy S 4 General] MonkeyTime:
I don't always use stock chargers, but I've had problems even when I do.

My biggest dilemma right now is using the hdtv adapter. I'm only getting 300ma thru it to charge with by means of a stock Samsung AC charger.

I've got KToonz kernel with fastcharging enabled and usb bumped up to 600ma just to check, but I can't get over 300ma with any combination.

Could I be missing something else?
[Galaxy S 4 General] jaswinky:
I think only Perseus kernel can set specifically HDMI input current and others situations separately.

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[Galaxy S 4 General] DFerb:
May I ask a question? Yesterday, I found a problem with my original cable. It took me more than 5 hours to charge from 20% to 95% while it used to take 2 and a half hour to full charge. By using Galaxy Charging current app, the current is 880 mA whereas it must be 2A. I used another cable and the time taken to full charge went back to normal. I noticed that the current into my phone was 1200 mA at first but 1900 mA in 5 minutes later and went back to 1200 mA then. Is it normal when the current is changing like that?:confused: Thanks
[Galaxy S 4 General] jaswinky:
Yes, a lot of original Samsung white data cables came defective. And yes, rise from 1,2A to 1,9A is normal, it depends of the app measure method and the state of the screen on/off.

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[Galaxy S 4 General] R-P:
Own measurements

I finally got round to making a measurement cable. It has an inline 0.1 ohm resistor*, so far from ideal as it will drop the voltage from 5.06V (Samsung original charger) to a theoretical 4.86V at 2 amperes charging current. But it is nice to have. USB male to female, 6"long and a bananaplug before and after the resistor (voltagedrop) and one on the black-ground-wire (for voltage before and after the resistor measurement)

I noticed the current drawn by the device was around 1.3A (130mV drop over the resistor) with the screen off and about 0.9A (fluctuating between 70 and 99mV) with the screen off (edit: ON).

Can someone explain why it would draw less from the charger with the screen ON?

I measured both my original S4 white charger and my daughters black 7" TAB2 charger. Mine had 82kohm resistorvalues between datapins and +5V/GND. Hers had 77kohm.

* plan is to make one with a 0.01 ohm resistor (20mV drop should be negligible) and a fixed LCDisplay voltmeter (plus 9V battery for the LCD). I should have a new one somewhere that can measure 200mV DC and lets you select where to put the decimal point as well. so 199.9mV range but with the decimal point in the middle (19.99) should give me a theoretical range of 19.99A (useless) but still a useable range of 2.00A in three digits for the S4. And also more than enough for testing my 3.5A 5V carcharger-modules. Pretty much a USB version of a wall-socket powermeter: it shows you USB voltage (in the 19.99V range) or current drawn (199.9mV range with the decimal point one step to the left).

And here´s a link for my USB-charging-findings on Apple products (last post). To show that I sometimes do a little more work than I did on this... :) But almost everything´s already been done and written down in this thread :)
[Galaxy S 4 General] Pfeffernuss:
Heat management. Screen-on = device will warm up anyway, even without charging.

Flashing a custom kernel will enable the full charging capacity capability when the screen is on. Using Ktoonsez myself.
[Galaxy S 4 General] Rob2222:
Hello,

the first stock firmware that came with the I9505 at release used 1900mA kernel setting (Galaxy Charging Current App) even with display on.

Later they decided to differentiate between screen on and screen off. As Pfeffernuss said, heat management could be a good cause.

Also, I think you only get around 1A cause you already have a huge voltage drop over the resistor. So the input voltage is already to low and the kernel reduces the drawn current. You can also check that with the named app and when your battery is below 75%. (So that the S4 tries to draw full current).

The shown value by the Galaxy Charging Current App is _not_ the measured current, but the current setting that the kernel is setting regarding the actual supplied input voltage.

However, can you check the current _before_ the resistor? I read, that the original S4 power supply has a intelligent voltage output. So it automatically raises the output voltage a little when heavy current is drawn. I am almost sure that this makes sense and the report I read in another board is correct, but when you already have this setup, maybe you can confirm this a second time.

BR

Robert