yashsingh1/xdaforums huggingface dataset:
[XPERIA X10 General] pacharru:
Some say that is related to SD card reading, sould come to normal after a few hours using the phone.

I had the same but in the next morning (8 hours after) It was fine.

EDIT: I can recommend also the jit mod (only step2).

http://xdaforums.com/showthread.php?t=829660
[XPERIA X10 General] SiL3nTKiLL:
hmmm thats strange, try reflashing?
[XPERIA X10 General] cyberinsane:
yes it was indeed laggy for few days....but aft few days and aft installing JIT i think it runs much better than desire :D
[XPERIA X10 General] kevor:
I had the same thing every operation on the phone was laggy and i mean really laggy...i did the update again and i also (with the help of this very forum), removed some apps (after rooting of course) like timescape etc and i also downloaded minfree manager and changed some values in it and now my phone is smoother than ever before!

Thread for the minfree manager http://xdaforums.com/showthread.php?t=834044

Tips on what apps do delete if you need it http://xdaforums.com/showthread.php?t=826491
[Windows Mobile Software Development] eleandir:
Hello.

I'm trying to make system that use zigbee module connected to the smarthphone/PDA through USB port. I was working till now with HTC Advantage 700, but it was problematic in many ways. Now I'm looking for new smartphone which could fulfil following requirements:

OS: windows mobile

USB host controller

possibility to power up external device (zigbee module)

compatible with ftdi drivers

I was searching a little bit and my best candidate is Toshiba TG01. What do you think?

I'm trying to run the application that I wrote in Java. On PC it works perfectly but when I'm trying to run on HTC with Mysaifu JVM I have always following error:

"Error loading win32com: java.lang.UnsatisfiedLinkError: Native library `win32com' not found (as file `win32com') in gnu.classpath.boot.library.path and java.library.path"

Naturally I placed the win32com.dll in "bin" folder. I don't know what can be wrong. Any ideas?
[Captivate Q&A, Help & Troubleshooting] Caliesv:
I'm on a Captivate, rooted (Oclf). I tried out TB to freeze my apps, but my phone ended up sluggish. Is there a trick I'm missing here? Has anyone else had this problem?
[EVO 4G Accessories] mitchellvii:
Reference Thread:

http://xdaforums.com/showthread.php?t=833602

Apparently, according to the above research, although the EVO charging cable is rated at 1 amp, the phone is only charging at 650 ma. This adds an extra 45 minutes or so to full charge times.

This would make sense in the same way that 3 ghz cpu's can easily be pushed to 4 ghz by those who know what they are doing. The 650 ma is just to "idiot" proof the battery and to provide some wiggle room for "defective" batteries to still function safely.

HERE'S MY QUESTION:

Is this a hardware based limitation or software based? Could someone write a kernel or app that would disable this limitation allowing us to charge at full speed? I am NOT a programmer so have no idea if this is feasible but would appreciate input from those who would know.

Thanks in advance.
[EVO 4G Accessories] bmxrider4444:
Well from my bit of micro-electronics experience, it is usually hardware done for this sort of thing, but until someone really checks all possible routes it is hard to tell.
[EVO 4G Accessories] spankmaster:
SUPER EDIT:

All hail pete...:D:D:D:D:D:D
[EVO 4G Accessories] PGRtoo:
Let's see if I understand this correctly: You've read in a couple of threads that other people have claimed that they've suffered a loss of capacity because they've charged their Evo batteries with a 1A (1000mA) charger, am I right so far? And because you read this you know enough to tell someone who has years of hands-on experience with LiPo batteries and chargers that he's wrong. Did I get that right? :rolleyes:

Whatever, dude. I certainly don't need to argue with you, but I'm compelled to point out a couple of things for other people's sake like the simple fact that the HTC wall wart that comes in the box with a new Evo has a 1A output.

And then there's the fact that a 1C charge rate is the de facto standard in the battery industry for LiPo batteries. Rather than make you do the math, a 1C charge rate for a 1500mAh battery is 1.5A and a 1C charge rate for a 3500mAh battery is 3.5A so charging either of 'em with a 1A rate is well below the most recognized charge rate in the industry.

But I must be wrong if you say so. And if I'm wrong then all the scientists and engineers who design LiPo batteries and chargers must be wrong too.

So I'm in some pretty good company, don't you think? ;)

Pete
[EVO 4G Accessories] spankmaster:
well, looks like my ass has been handed to me by science lol :) Sorry if i sounded insulting, you obviously know more than I. Just trying to give my best 2 cents from what ive heard, and i honestly have heard from a relatively large crowd that 1 amp charging does seem to hurt they're batteries. I thought maybe 1 amp or faster would be fine for the larger cells, maybe 2500 or 3500 or up, but maybe just the smaller cells like in most cell phones couldnt handle that fast a charge as well. No reason to argue with the science of it all though. Also, i do know that the wall charger that comes with the phone is 1 amp output, but many chargers say that but dont always output it depending on the device hooked up (the device not pulling that much, obviously not saying it knows whats plugged in). Does the evo actually charge a full 1 amp from it?
[EVO 4G Accessories] mitchellvii:
Although I appreciate everyone's input I think you are missing the point of my question. It is not "should we charge at 1 amp?", but "why are our 1 amp chargers only charging at 650 ma?".

If EVO's are rated to charge at 1 amp and the charger is 1 amp, why is it charging at much less. This sounds more like a software thing than a hardware thing. Why would EVO publish that its rated to charge at 1 amp when it cannot physically do so?
[EVO 4G Accessories] bmxrider4444:
Well one semi logical explanation is they limited it to keep the heat levels down to keep components such as the processor from overheating while charging, or they just wanted to do it to piss some people off.
[EVO 4G Accessories] PGRtoo:
I want to be real clear about something before I throw any more info into the mix: My info is based on a mixture of my experience with LiPo batteries and charging circuits, my own observations during the time I've owned my Evo, and anecdotal evidence I've collected in this and other forums about the Evo. In other words, my info is based on educated guesses rather than hard facts and with that in mind ....

The Evo does seem to regulate the charging current (rate) to the battery to around 650mA. If you use a power supply that is incapable of supplying 650mA (like a USB port on a computer) then the charging rate will be less, but I haven't read any reliable evidence that suggests that a more powerful power supply will increase the charge rate. My own experiments seem to support that conclusion: I've charged my own Evo with my computer, the HTC 1A charger, a USB hub which can supply 2A, and a mobile charger rated at 850mA. The 850mA, 1A, and 2A supplies all take the same amount of time to recharge my Evo and the computer takes a little longer.

I've also read plenty of reports which suggest that the Evo also uses a mAh cap to limit the amount of charge it will accept before it terminates the charge cycle. It's important to understand the difference between charge amount and charge rate for this to make sense: A parallel example is gallons and gallons-per-hour: Gallons is an amount and gallons-per-hour is a rate. In the Evo's case, mAh (milliamp-hours) is the amount and mA (milliamps) is the rate.

Under normal conditions a LiPo charge cycle is terminated when the battery voltage reaches 4.2V per cell, but due to the volatile consequences of overcharging LiPos engineers usually build additional redundant safeguards into consumer electronics to protect consumers from themselves and a charge rate limit and a charge amount limit are often used together to that end.

So I'm not at all surprised to see evidence that

both

are used in the Evo, although I do think they erred a little too far on the side of caution. :mad:

Now if I had to guess (and I do), I'd say the ~650mA charge rate is hard-wired into the charging circuit and I'll be surprised if that can be changed with anything short of a hardware revision. The charge amount limit is another story, though. That is probably coded into the software.

And on that note, I'm done guessing.

Pete
[EVO 4G Accessories] mitchellvii:
Confuscius say ...

"It is better to guess and be found right, than to pontificate and be found wrong..." :)

EVO specs show that it should charge at 1 amp. The charger they give you with a new phone is a 1 amp charger and yet, in numerous threads we learn that people are only getting about a 650 ma charging rate.

THE CONSPIRACY THEORY

(don't get excited, just tossing out ideas here - just because you are paranoid doesn't mean everyone really isn't out to get you :) )

There is something going on here that doesn't add up. Could it be that HTC could not get enough high quality batteries in time to ship and yet, all the specs had already been published? So they shipped some units with "non-binned" batteries and set the charge rate at 650ma to make sure they didn't blow up (lowest common denominator)? They also shipped the 1 amp chargers because they had already manufactured those with the idea the average Joe would never know the difference?

Think about it. It makes sense. Why else tell us it will charge at 1 amp with a 1 amp charger then limit it to 650 ma?

Could this be the reason why so many people with "identical" phones get such wildly different battery results? If this is true, HTC would be looking at one hell of a class action lawsuit.
[EVO 4G Accessories] PGRtoo:
Just noticed this:

I don't believe that HTC or Sprint has published anything about charge rates. The only thing (that I've seen) that even remotely suggests a rate is the fact that the wall charger they include with the Evo has a 1A output.

There are lots of reasons why a device like a LiPo-powered cell phone needs to

internally

regulate the charging rate and human folly is right at the top of the list. Imagine how many people would charge their phones at higher and higher rates without ever even considering the consequences of doing so if all they had to do was buy more powerful wall warts. Imagine how many people have already tried! :rolleyes:

And I should add that the consequences of charging LiPo cells at excessive rates includes big balls of fire. Go to YouTube and do a search for "lipo fire" if you'd like to see for yourself.

The other major consideration is the amount of electrical current that the circuitry and components in the phone can handle. Push too much current through 'em and they become heaters. Push a little more and circuit board traces start popping like fuses if the components don't fail first.

I imagine you're asking yourself why HTC would supply a 1A charger if the phone will only charge at 650mA (note: you folks are so predictable :D) and the answer to that is pretty simple too: The phone can use that extra power (overhead) to power the phone while it's charging the battery. Without that overhead you'd never be able to charge the battery at the regulated rate without turning the phone off.

And that isn't guessing. ;)

Pete
[EVO 4G Accessories] mitchellvii:
But Pete,

To my understanding, the EVO runs off the battery even when it is being charged. Any overhead from a 1 am charger would not power the phone but just not be used at all. The reason the phone charges during heavy use with a more powerful charger is simply that it is charging faster than the battery is draining.

No power goes directly from the charger to the phone. Try plugging your charger in with no battery and see if it works :)
[EVO 4G Accessories] PGRtoo:
I saw a lot of evidence of that in Evo forums before I got my phone and I initially hypothesized that it was why some people were experiencing the rapid ~10% battery drop off if they didn't take the phone off the charger as soon as the light changed from amber to green. And that may, in fact, be true for some Evos but I've seen no evidence whatsoever that my phone works that way. I put my phone in the charging cradle at night with no regard to the charge level and I grab it at whatever random time I happen to need it the next day, and my battery is always fully-charged and I've never experienced the quick drop-off.

My phone also seems to take the same amount of time to top off the battery from a known charge level regardless of whether I leave 4G, WiFi, Bluetooth, and GPS on or turn them all off as long as I use the 1A wall wart.

Those two things have given me reason to question my own hypotheses. In fact, they seem to provide ample evidence to prove it wrong.

I've actually thought about trying that, but my job requires that I'm "reachable" at all times and I can't afford to experiment with my phone in ways which might brick it, regardless of how remote the chance is.

And the fact that the phone won't work via external power without a battery in it isn't hard evidence that the external power can only charge the battery. There are many reasons why it might not work including the possibility that the entire power management circuit in the phone requires some exciter voltage from the battery to work. That's actually a pretty common safeguard.

But the truth of the matter is I'm back to guessin' again. ;)

Pete
[EVO 4G Accessories] spankmaster:
I think i might have actually answered your question there lol. Ever heard how weird ipod/iphone chargers are? its cause they have resistors on the data lines to signal the phone to charge, and chargers without them will not charge it. Similarly from what ive gathered, if you open up the charger you want to use, say a wall or car charger, you can bridge the two data lines together, and that will signal the Evo to charge at a full amp. you can use Spare Parts to see that it says charging via A/C to validate this. this has been the solution decided on so far and its very easy. hope i helped!
[EVO 4G Accessories] PGRtoo:
Where are you getting this information, spankmaster? Who has decided on this solution? I'd genuinely like to know because I'd like to follow the threads myself.

Have you tried this yourself with an Evo or are you hoping one of us will and let you know how it goes?

And FWIW, I'm not trying to be a smart ass. I really am interested in this but I must say that I'm a bit skeptical.

Pete
[EVO 4G Accessories] spankmaster:
heres the thread my friend!

http://xdaforums.com/showthread.php?t=767961&highlight=car+charger

The OP has some good info as well. And i did this myself about an hour ago to test and it indeed works.
[EVO 4G Accessories] PGRtoo:
That's a good find, spankmaster, but evidence still points to a a charging rate which is internally limited to around 650mA even when the phone detects an AC charger. Here's why I say that:

The majority of my own testing has been done on a Seidio Desktop Charging Cradle powered by a Seidio Micro-USB High Output Folding Travel Charger which I just now discovered has a 1.25A instead of a 1A output. Spare Parts already indicates (without any modification) Battery status: Charging (AC), Power plug: AC when I put my phone in the dock.

Now if this "Charging (AC)" condition would allow my phone to charge at the full 1.25A of the charger then it should take ~1.2 hours to charge a depleated 1500mAh battery. At just 1A it would take ~1.5 hours however the two times I deliberately did that as a test it took almost 2.5 hours to charge in the above-mentioned dock.

1500mAh divided by 2.5 hours = a 600mA average charging current but the actual current tapers off as the battery nears 4.2V so the maximum charging current over that 2 hour period was probably somewhere in the 640-660mA range.

The bottom line, at least as I see it, is that shorting the D+ and D- pins may cause USB chargers to charge at AC charger rates, but it doesn't seem to help AC chargers exceed the ~650mA maximum which is apparently hard-wired into the Evo.

The math says it.

I believe it.

That settles it. ;)

'Course I'm still open to new ideas and I still have a glimmer of hope that there's a solution banging around in someone's head just waiting for the right "AHA!" moment.

Pete
[EVO 4G Accessories] spankmaster:
ah ha, thats wierd. I think ill conduct a similar test of my own with the charger modified as they specified and see what my results hold. in the same thread there are people, or at least one or two guys, claiming to get a 45 minute charge, so their still might be something to it, or people are just being ridiculous lol. ill post back with my results!
[EVO 4G Accessories] PGRtoo:
To charge 1500mAh in 45 minutes would take a bare minimum of a 2A charge current. That's dangerously over a 1C charge rate and if they actually can charge at that rate they stand a good chance of making a smoking hole in something. :eek: And If they are doing that and getting away with it they're definitely reducing the number of charge-discharge cycles they'll get from their batteries by a huge amount.

Realistically, I don't think it's possible to force an Evo to charge at rates like that so they're either spreading fertilizer or the batteries were more than half-charged when they started.

Pete
[EVO 4G Accessories] spankmaster:
ya, i thought the same thing about 45 minutes. i brought my battery (stock) down to 15% and plugged it into my modified charger and am gonna stay up to see how it does. Its a 99.9% chance its gonna charge exactly like you said. But i was just thinking about the thing about the ipod charging as well, cause the ipod will only charge with the resistors in the lines, but different resistances will tell it to charge at different rates, so im just checking for the .1% chance that bridging the two data lines might signal the phone ever so slightly different then the pre made chargers your using. like I said, one and a million, buts its always worth exploring, if not even just to prove your brilliance :D

1 HOUR RESULTS: at a solid hour it looks like a got to 65% indicating a 50% charge. so the the moment im at a 750mah average charge rate. but as you stated before, as the battery comes closer to a full charge, it tapers so it looks like it'll probably average out. ill update again for the Hour and a half point.

1.5 HOUR RESULTS: solid 80% after 1.5 hours (again, starting with 15% charge so a total of 65% charge during testing time). Thats 975 mA in 1.5 hours which puts us right on the money at 650mAh charging rate! :) (SHOCK AND AWW! Lol)

Conclusion, bridging the data lines didnt do diddly SQUAT! i mean, i didnt test the rate before hand, but it certainly isnt giving anyone any 1 amp charging.

And brain blast, wouldnt it be just as effective a method to test charger output by cutting open the cable and hooking a multimeter in the circuit? Actually, imma try that right now!

Hokay, so hooking up the multimeter in line made things really screwy, evo stopped charging and the current on the meter was going way up and down. Either im even MORE retarded than i though and forgot how to use my multimeter or this charger is dangerous and i dont wanna use it anymore cause that shouldn't happen like that lol.

So, back to the OP's question.....

no clue mi amigo! :confused: good luck though! :p
[EVO 4G Accessories] luma:
Did you place the meter in series (in-line) or in parallel (across) the +5/Gnd cables? For measuring current, it needs to be in series and you can fry circuits by placing it in parallel as it will present near-0 resistance, shorting all the voltage through the meter and straight back to the supply.
[EVO 4G Accessories] mitchellvii:
Could it be that HTC has limited the charging rate to 650 ma because they know they have sold inferior batteries on at least a portion of their phones and are limiting the charge rate to prevent exploding batteries?

There is no reason to limit a battery that can theoretically charge at 1.5 amps to just 650 ma unless something is rotten in Denmark.

This would also explain the wide variation in battery performance that many users are reporting.
[EVO 4G Accessories] PGRtoo:
I'm not buying into the inferior battery theory 'cause there are too many

legitimate

reasons why a manufacturer would limit the charging current below 1C. At the top of the list is the simple fact that LiPo cells wear out and not everyone will replace them when they should. And as they wear out the internal resistance goes up and the maximum safe charge rate drops.

That's actually one of the biggest challenges to designing consumer electronics: They have to allow for every possible scenario, and there's a very apropos saying in the industry which goes something like this:

People who attempt to design foolproof systems always underestimate the ingenuity of fools. ;)

My personal belief is the answer to the Evo's charging problem doesn't need to include increasing the charge rate. What HTC needs to do is adjust the firmware so extended batteries can be fully charged and fix the battery "gauge" so it doesn't get confused. If they do that the reduced charge rate will cease to be an issue to all but the most impatient users.

Pete
[EVO 4G Accessories] Lord Delmar:
I would actually like to raise this topic but for a slightly different reason.

Has anyone used a Usb-Micro USB cable from monoprice? They have always had exceedingly high quality cables for everything I have ever wanted, but I am noticing something strange which I am not versed enough in electrical engineering to solve.

The cable that comes with the EVO is 2 Ft. long or so. The charger is 1A.

Monoprice has various length cables from 1.5ft to 10ft or longer. Well, being the gadget geek I am, I love having spare cables for any number of reasons. I ordered 10, 10ft micro USB cables and 5, 5ft cables (might be 6ft, but am at work and cannot check)

I have noticed that if I charge off of a wall socket, I usually don't run into too much of a problem with the shorter cables, but the 10ft cable it is noticeably slower. If plugging into a USB port on a PC (direct port) I have actually ran the battery down while wifi tethering (not much of a surprise for me). If I plug it into a powered USB hub (have a few different types), it seems to charge just fine, no matter the length of the cable.

Now, I know all cables have their theoretical maximum length before signal degradation and interference become factors, but for just regular voltage, is 10ft enough of a length to have some attenuation on a USB cable? They come with ferrite cores on one end, to help with interference, so I find the interference argument a bit more difficult to swallow.

Anyone care to run some tests? The prices at monoprice are so cheap, I end up having to buy extra stuff to justify paying the shipping charge. To me, it is impossible for me to purchase something and pay more for the shipping than for the actual item...well, maybe not impossible but it makes me sad. LOL
[EVO 4G Accessories] PGRtoo:
Sure is, and the higher the charge rate the more "attenuation" you'll get. When it comes to charging the battery and powering the phone, "signal degradation" and/or "interference" has

nothing

to do with it. It's all about voltage drop through the wire.

The published specs for Monoprice USB cables say they're made from 28/24 AWG wire which I assume means they use 28 gauge wire for the signal leads and 24 gauge for the power leads. Smaller numbers mean bigger wire, BTW, so the 24ga wire is bigger than the 28ga. These wire sizes are pretty typical for USB cables but 10 feet isn't. Pull even a half amp through 20 feet of 24 gauge wire (remember that the current has to make a round trip) and you'll have significant voltage drop.

When it comes to charging your phone you should keep the cable as short as practical. Ohm's law says it, I believe it, and that settles it. ;)

Pete
[EVO 4G Accessories] spankmaster:
Series of course you silly goose :p lol

Petes right again here as well. anything over 5ft or so and your gonna be able to notice quite a big difference especially when your only sending 5v to begin with.