My Galaxy SII now is out of battery (state off). I could not charge or turn it on.
When I connect it to charger or USB cable, it starts up, then home screen appears and it just alert 'Batter critically low' and turn off automatically. This action (startup and off automatically) repeats every several seconds if the charger or USB cable is still connected.
Here are what I have tried:
- Test my charger and USB cable with other device and it works fine (charger and USB cable are also original ones).
- Use another battery
- Upgrade and downgrade OS (Gingerbread, ICS)
Please provide me some advices.
Thanks.
clean the micro usb port of the phone with a can of compressed air and try charging again. if it doesn't work even after that, then u'll have to get ur micro usb port changed.
I have a similar issue at the moment, except I get different things with different chargers. It's a usb flex issue. Which means that it needs replacing.
Sent from my GT-I9100 using xda app-developers app
i had similar but please only do this if you're brave or are planning to replace the usb/charge port.
inside the charge port you'll see a flat gold coloured tab. with a small flat blade screwdriver, gently nudge it upwards, i.e. towards the screen. then try a charge, if no joy, nudge it a bit further.
this worked for me twice. but at you're own risk etc. good luck.
move to Q&A maybe? ...
Related
Sorry if this is a duplicate thread, I searched quite a bit for a solution but only found stuff for the TP, not the TP2.
Ok, so I know with the original TP you could charge it from a computer, but it was not as fast as a wall charger unless you had the fix that allowed it to charger faster on the computer.
Well on my TP2, it really won't charge the phone, and if I am using something like wifi router that uses a lot of power, it will actually lose power while charging off my computer...
Is there a fix to bypass this so I can have my phone plugged into my computer and charge it???
make sure in your battery settings the box that says "when device is turned on, do not charge the battery when connected to the PC" is unchecked. meaning an empty box. if its checked off, uncheck it. also, this might help, when plugged up to ur computer, cut ur backlight all the way down or low. the phone will use less battery that way and will charge faster when hooked up. either way though, charging thru a pc is trickle charging, meaning its gonna b slower than wall charger anyways. i havent came across the fix u mentioned for the TP.
trickle charging is when battery is fully charged and is still pluged on charger, then charging change to trickle power charge, around 20mA+actual request of the phone. this way if you have phone/any electronic in general on charger for a month, it's still kept fully charged.
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htc have two modes of charging slow 500mA and fast 1A (1000mA)
to say to the phone that charger is fast, you need to have one pin on mini-USB connected to ground. this pin is unused by mini-usb specifications but htc is using it for this trigger.
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cut open mini usb connector on usb to mini usb cable and wire the unused PIN to power ground (get pinouts pics or use multimeter!!!!! don't guess try it)
then you still facing another problem, USB is strictly specified to not exceed 500mA (with 10% toleration) no trick to get more then this from one usb. some computers are not so precise with rules though and could give slightly over 550mA
to get 1A you need to use two usb ports in parallel. like some china made usb harddrives enclosures
get an additional USB connector and add it to your cable.
NOTE: DON'T CONNECT DATA LINES ON THIS SECOND CONNECTOR!!!!!
data = inner 2 pins
power = outer 2 pins
* you can get an USB extension cable, wire 2 power lines out of it, connect to your usb - miniusb cable... this way you still can use the other usb for other device
NOTE: this is not a standard though accepted solution. I haven't saw or heard of any burned computers cos of this but wouldn't be surprised to see one.
anyway if I had that need, I would go for it
when making this cable, be very sure 5v wire is not touching data lines!!! Test it properly before plugging to PC! I have brand new laptop now, the old one is lying with DEAD usb host below table just because I believed there have to be protection against this. There IS NOT.
NOTE: NEVER LAUGH ON MY PAINTINGS!!
Or you can buy one for $4
http://eshop.macsales.com/item/Othe...medium=shoppingengine&utm_campaign=googlebase
actually NOT.
without grounding the special pin on mini USB side of the cable, mobile would charge by 500mA no matter if you put 100A charger in. or paralleling 20 USBs
Wow...I'm pretty tech savy but that was a bit confusing...so I get the gist of that, but how is it that all it takes is plugging the usb chord into the htc ac power supply will fix that? why isn't it required for all that jazz of rewiring crap on the ac adapter as well, since it comes from the same usb chord...?
eh, have mercy with that english slang we are mostly not englishers here
What you meant was, why htc AC (wall) charger charges on hi power without those tricks?
Because the connection is already made there.
That's not a hidden trick anyway. Not even trick. It's a standart feature.
HTC is, not like other manufacturers, sticking to specs and mobile would not demand more then 500mA from standart usb connection.
usb is defined to be max 500mA
if you want a connector which is based on standart (htc's usb-hub can use usb cables), and you want a fast charging without violating standarts than this was the best resolution, to use pin which is generaly unused to trigger-detect 1A charger.
But as htc didn't made computer fast-charge cables. A serious company will not release such a cable. Connecting power from two usb hosts together - I feel pain by doing it, but it proved computer stabilizators don't mind it and though I don't think it's giving really double, it's giving more then 500mA.
But here you have to "imitate" original htc AC charger by shortwiring that trigger pin the way as it is there.
hope this was your question about.
Just final note in red when making this cable, be very sure 5v wire is not touching data lines!!! Test it properly before plugging to PC! I have brand new laptop now, the old one is lying with DEAD usb host below table just because I believed there have to be protection against this. There IS NOT.
Hi guys, I have this VERY STRANGE issue with my Gum Pro and my SGSII. If you don't know what I'm talking about the Gum Pro is basically a larger battery (4400 mAh) that you can use on the go to charge the battery of your device as it was charging with its own charger.
Ok..I always used it with any device I had. Cellphone, MP3 or whatever else neede to be charged when I wasn't home or hadn't any plug available....
Today I got the SGSII in exchange for my HTC Sensation and a while ago I neede to charge it while moving from one room to the other, so I connected it to the Gum Pro and.......nothing....I tried to unplug it and re-plug it in...nothing....I tried to plug it to its charger and it's working fine....I tried to plug it to my PC and again it's charging just fine....I also tried the Gum Pro with an old HTC I have for emergency and even the Gum Pro it's working fine...but if I connect the SGSII to it nothing happens: like it doesn't exist!!
Can anybody tell me WTF is happening??? I don't get it: both the devices work fine, but the can't get along....
Any electrical engineer or technician can give me any advice?? I can run as many test you need...but I really need to get it to work cause I'm often in a situation where the battery is dying and I need to charge it but I don't have any plug around me!!
i use something similar - new trent and it works fine.
Ok ...I searched over the net the product you suggested just to get some info and ran into these 2 usefull reviews which give some hints on the issue:
1-
"This product does not work out of the box with a Nokia N900 as, like many external battery packs, it does not conform to the USB dumb charger specification (the data pins of a USB dumb charger must be shorted before a compliant device will assume that it can draw current in excess of 500mA without causing damage).
Therefore, out of the box, this product does not work with the Nokia N900 or any device that complies with the USB dumb charger standards. This can be resolved by using a dedicated charge cable with the USB data pins shorted, such as the one available from Proporta, but it's a shame it didn't come with one, or with the pins properly shorted such that conventional USB data cables would also work.... [cut]"
2-
"The USB port is not wired correctly!
If you use a normal micro USB cable (rather than those horrible tip adaptors), your phone will only charge at 500mA - the rate of a 'data' USB port. My HTC Desire HD will show that it is connected to a 'USB Charger'.
The New Trent is wired incorrectly; To be a 'charge' port, pins 2 and 3 should be grounded. This tells the phone that it can pull 1000mA from the charger - the HTC Desire HD will say it is connected to an 'AC charger'. ie. it charges in half the time.
So check what cables you're using -- you might be taking twice as long to charge your phone than is neccessary!
2 ways around this - use the flimsy supplied cable and bulky tip adaptor, or use a cable that has itself been incorrectly wired like the one that comes with the genuine HTC car charger. (This cable has pins 2 and 3 grounded -- but remember that it should be the port that 'announces' whether it can deliver 500mA or 1000mA not the cable -- in theory if you used the HTC charger cable in a data USB port on your PC, you could blow the USB port because the phone will be 'told' it can pull 1000mA but the computer's USB port can only guarentee 500mA).....[cut]"
Ok..now would be really nice if anybody with some knowledge could tell us a work around when this situations come up: should I start researching a USB/MicroUSB cable JUST for charging purpose? I doubt I'll find anything similar on the net.... :-/ any other suggestion??
Nobody has any technical knowledge about this issue??
If you have a friend who might have electrical and elettronic knowledge could you please link him this thread??
Just get a cable and short d+ to d- inside the connector towards the phone, problem solved.
Sent from my GT-I9100 using XDA App
... Ehm... I got the meaning of what you said just till "cable"... so.... I get a cable and do what??? sorry for my noobyness but I really can't guess what d+ and d- stand for and where should I apply this..
Sent from my GT-I9100 using Tapatalk
Hi,
PsicheAlCubo said:
... Ehm... I got the meaning of what you said just till "cable"... so.... I get a cable and do what??? sorry for my noobyness but I really can't guess what d+ and d- stand for and where should I apply this..
Sent from my GT-I9100 using Tapatalk
Click to expand...
Click to collapse
What he mean - if you look at a usb-connector, you could see 4 lines inside. The two outer ones, left and right, are used for 5v plus and minus, the two inner one's are data plus and minus!
To tell the phone that it can suck more than the usb-standard 500mv, the two data-lines have to be shortened! So the phone knows, that it isn't connected to a normal usb-port (pc, laptop or so) and it could get more than the normal 500mv from this port.
Sadly, this is a common problem with most after market power supplies and also with this external-battery-loaders like the mobile Gum - the data-lines are not shortened -> phone thinks, it's connected to a laptop or pc -> load'S with a max of 500mV!
If you're brave enough, you could try to manipulate the connector of the Mobile Gum Pro or a usb-cable to have the data-lines shortened out and your phone will load with the max. mv, whatever your phone accepts!
But if yoou manipulate the cable, be sure that you don't use it anymore for a normal usb-connection - doesn't know, if shortened data-lines will destroy anything, but surely it will not work anymore for transferring data!
i bought myself something like this too...V-Tank..have u tried unticking the usb debugging mode in settings>applications>Development?
Rofor said:
Hi,
What he mean - if you look at a usb-connector, you could see 4 lines inside. The two outer ones, left and right, are used for 5v plus and minus, the two inner one's are data plus and minus!
To tell the phone that it can suck more than the usb-standard 500mv, the two data-lines have to be shortened! So the phone knows, that it isn't connected to a normal usb-port (pc, laptop or so) and it could get more than the normal 500mv from this port.
Sadly, this is a common problem with most after market power supplies and also with this external-battery-loaders like the mobile Gum - the data-lines are not shortened -> phone thinks, it's connected to a laptop or pc -> load'S with a max of 500mV!
If you're brave enough, you could try to manipulate the connector of the Mobile Gum Pro or a usb-cable to have the data-lines shortened out and your phone will load with the max. mv, whatever your phone accepts!
But if yoou manipulate the cable, be sure that you don't use it anymore for a normal usb-connection - doesn't know, if shortened data-lines will destroy anything, but surely it will not work anymore for transferring data!
Click to expand...
Click to collapse
Allright, I could give it a shot, what I can't get about all this it's that the same cable didn't work if connected to the Gum Pro but worked flawlessly if connected to the car charger (the one you plug into the "lighter" hole)..!!
I mean, surely from the car charger it would have carried much more than 500mV ...so why with the Gum Pro it didn't work out??
zamha2157 said:
i bought myself something like this too...V-Tank..have u tried unticking the usb debugging mode in settings>applications>Development?
Click to expand...
Click to collapse
Yep, already checked and it's not ticked!
It is really quite simple, the car USB charger obviously internally shorts d+ to d-, so will work with an ordinary USB cable and the phone will indicate "charging (AC)" in settings, about, status. you can achieve the same thing by modding the cable instead of internally in the charger or micro USB connector (with a standard USB cable).
I don't know what this debug suggestion had to do with charging, it had nothing to do with it.
Sent from my GT-I9100 using XDA App
My phone won't turn on. I own a samsung galaxy nexus (verizon). I've had it for 16 months. I was talking on my phone then ended the call. Had it charging to the wall. Set my alarm for the morning. When I woke up my phone was off. I tried to turn it on. No luck. I did the 10 second volume down plus power button. Still nothing. I pulled the battery and did the wall charger no luck. I plugged it into my computer with the usb. It doesn't register it. The phone has no lights on it. The screen doesn't light up notifying me of it charging. The little flasher light on the bottom doesn't light up. Please help I'm out of options. I called verizon and they said i'm off warranty. I have no other options that I know of besides to get a new phone. I love my phone. I unlocked and rooted it. I have everything on it. I need to get it back on. Any and every idea will be tried. Thank you!!!!
Micah
Question: Did you use the same USB cable from the wall charger to the computer?
Could be a couple of things...if the answer is YES, I would change USB cables and see if that fixes it.
If the answer is NO, you could try to clean out the microUSB port. It's possible that some dust got into it, causing a small shunt or keeping the pins from connecting. I know my previous Galaxy Nexus had this issue...found out I had a piece of lint that somehow got into the MicroUSB port and kept the USB plug from seating correctly.
MicahF said:
My phone won't turn on. I own a samsung galaxy nexus (verizon). I've had it for 16 months. I was talking on my phone then ended the call. Had it charging to the wall. Set my alarm for the morning. When I woke up my phone was off. I tried to turn it on. No luck. I did the 10 second volume down plus power button. Still nothing. I pulled the battery and did the wall charger no luck. I plugged it into my computer with the usb. It doesn't register it. The phone has no lights on it. The screen doesn't light up notifying me of it charging. The little flasher light on the bottom doesn't light up. Please help I'm out of options. I called verizon and they said i'm off warranty. I have no other options that I know of besides to get a new phone. I love my phone. I unlocked and rooted it. I have everything on it. I need to get it back on. Any and every idea will be tried. Thank you!!!!
Micah
Click to expand...
Click to collapse
reply to tkirton
tkirton,
I used a different charger than the micro usb cable. in fact i used multiple different chargers. I also blew out my usb ports and cable. I tried again and again, using different usb ports as well. it didn't work. My computer just doesn't seem to identify the cable or phone like it use to.
MicahF said:
tkirton,
I used a different charger than the micro usb cable. in fact i used multiple different chargers. I also blew out my usb ports and cable. I tried again and again, using different usb ports as well. it didn't work. My computer just doesn't seem to identify the cable or phone like it use to.
Click to expand...
Click to collapse
If you have exhausted all possible means then the last resort for you is to try the USB jig. Usually it can wake the device up and put it to ODIN mode. If that fails too, then its a possible major hardware failure.
Sent from my Galaxy Nexus using XDA Premium 4 mobile app
whats a USB Jig?
tkirton said:
Question: Did you use the same USB cable from the wall charger to the computer?
Could be a couple of things...if the answer is YES, I would change USB cables and see if that fixes it.
If the answer is NO, you could try to clean out the microUSB port. It's possible that some dust got into it, causing a small shunt or keeping the pins from connecting. I know my previous Galaxy Nexus had this issue...found out I had a piece of lint that somehow got into the MicroUSB port and kept the USB plug from seating correctly.
Click to expand...
Click to collapse
rajuki said:
If you have exhausted all possible means then the last resort for you is to try the USB jig. Usually it can wake the device up and put it to ODIN mode. If that fails too, then its a possible major hardware failure.
Sent from my Galaxy Nexus using XDA Premium 4 mobile app
Click to expand...
Click to collapse
What is a USB Jig?
MicahF said:
What is a USB Jig?
Click to expand...
Click to collapse
you can find the answer to this in HERE
Question , when you connect the charger, does it light up the battery symbol ?
Have u tryed to "center "the phone usb port with a needle or something like that ??
if not plz try this :
1) turn the phone off and take the battery out
2) take a toothpick, knife , pin or whatever will fit into the micro USB slot of the galaxy nexus.
3) VERY VERY slowly make it so that the little shelf like connector is in the middle.
4) connect ur phone and hope it gets back to life
mbi0 said:
you can find the answer to this in HERE
Question , when you connect the charger, does it light up the battery symbol ?
Have u tryed to "center "the phone usb port with a needle or something like that ??
if not plz try this :
1) turn the phone off and take the battery out
2) take a toothpick, knife , pin or whatever will fit into the micro USB slot of the galaxy nexus.
3) VERY VERY slowly make it so that the little shelf like connector is in the middle.
4) connect ur phone and hope it gets back to life
Click to expand...
Click to collapse
When i connect my charger i get nothing. no symbol no lights no response. and the centering of the usb charger didn't work either. my phone has such a tight fit i couldn't even fit a thumb tack pin into it.
I've done lots or research on the USB jig. I'm going to try it. or find someone that has one. wish me luck!
MicahF said:
When i connect my charger i get nothing. no symbol no lights no response. and the centering of the usb charger didn't work either. my phone has such a tight fit i couldn't even fit a thumb tack pin into it.
I've done lots or research on the USB jig. I'm going to try it. or find someone that has one. wish me luck!
Click to expand...
Click to collapse
Good luck. USB Jig might be your last resort before you send it to repair.
My resent pi started acting up... Fast charging doesn't work at all only when wireless fast chargeing... Only cable charging and that is it some time cable seem to disconnect and connect by ore self and suggestion on what to do
vasiaua said:
My resent pi started acting up... Fast charging doesn't work at all only when wireless fast chargeing... Only cable charging and that is it some time cable seem to disconnect and connect by ore self and suggestion on what to do
Click to expand...
Click to collapse
I would suggest two things... Start with blowing out any dust/crud stuck in the charging jack on the bottom of the phone. If still not charging properly, replace your charging cable with a new Samsung cable meant for the phone. I'm not 100% sure on our Note 5, but previously it takes an original Samsung cable to be sure you get proper (and fast) charging. If you do both of those things and it still doesn't charge properly, there might be damage to the charger port.
mattern1974 said:
I would suggest two things... Start with blowing out any dust/crud stuck in the charging jack on the bottom of the phone. If still not charging properly, replace your charging cable with a new Samsung cable meant for the phone. I'm not 100% sure on our Note 5, but previously it takes an original Samsung cable to be sure you get proper (and fast) charging. If you do both of those things and it still doesn't charge properly, there might be damage to the charger port.
Click to expand...
Click to collapse
Weird after I post this post it worked... What I did bleeds the dust out it took a touth pick and cleaned it and now it works yay
vasiaua said:
My resent pi started acting up... Fast charging doesn't work at all only when wireless fast chargeing... Only cable charging and that is it some time cable seem to disconnect and connect by ore self and suggestion on what to do
Click to expand...
Click to collapse
This happened to my Note 5 as well. Using a new usb cord works temporarily, but always goes back to not being able to fast charge eventually.
The fix I did and works, use a small instrument (tweezers, knife, etc.) and carefully bend the usb pin up (towards the screen) a little bit. Fixed mine completely, now my Note 5 fast charges 100% of the time, links to my desktop, and whatever else I connect it too.
I have a problem with my note 8.0 for about a month. One time it's charging just fine, the other time it doesn't charge at all... The same with connecting with computer via USB. No matter what cable/charger i use. Suprisingly i can flash it, with no problem and i can connect USB stick via OTG anytime. I also tried opening it and removing battery for several hours, but that only worked once. Anyone has any idea what can i do next to solve this problem?
I use an app called Galaxy Charging Current. It enables you to get a rough idea of what the current of your device is drawing:
https://play.google.com/store/apps/details?id=com.abmantis.galaxychargingcurrent.free
For a Galaxy Note 8, it should be around 2 Amps, or 2000 mA, but it's likely to be around 1.7ish. I also use a device like this: http://amzn.eu/9aHm97o which you can also use to check current draw and test cables.
Not much help, but it may help you find out whether the device is taking a charge, or if there's a fault with a cable or charger.
potworzak21 said:
I have a problem with my note 8.0 for about a month. One time it's charging just fine, the other time it doesn't charge at all... The same with connecting with computer via USB. No matter what cable/charger i use. Suprisingly i can flash it, with no problem and i can connect USB stick via OTG anytime. I also tried opening it and removing battery for several hours, but that only worked once. Anyone has any idea what can i do next to solve this problem?
Click to expand...
Click to collapse
After time the USB port gets loose around its connector, and does not hold the cable end tightly. Try replacement USB port. They are cheap and easy to replace.
Another thing is some aftermarket USB cables have weak connectors. Lightly crimp the center with small pliers as to compress top and bottom. I said lightly. It will put more pressure to the internal contacts so they are snug. May take a few attempts as you may be too light on crimping, but that is a good thing.
potworzak21 said:
I have a problem with my note 8.0 for about a month. One time it's charging just fine, the other time it doesn't charge at all... The same with connecting with computer via USB. No matter what cable/charger i use. Suprisingly i can flash it, with no problem and i can connect USB stick via OTG anytime. I also tried opening it and removing battery for several hours, but that only worked once. Anyone has any idea what can i do next to solve this problem?
Click to expand...
Click to collapse
Clean your cable heads with fingernail polish remover
Let it dry some and push it in and out of the charging port til you get proper amps