Develop Bugs

[Q] Samsung Galaxy S2 not charging with External Battery for Portable Devices

Hi,
I am unable to get my Galaxy S2 charged with an External Battery for Portable Devices (e.g. Just Mobile Gum Pro 4400mAh).
With the Galaxy Ace I had the same problem. After disconnecting the USB data wires, keeping the power ones intact, it worked fine, but that does not work with the S2. Anybody else having that issue? The USB cable charges with wall charger and PC.
I would hate to buy a new external battery. :-/
Thanks,
kuschel

Could you rephrase your sentences. I am not able to understand the problem clearly.

Sure. The phone does not charge when connected to the battery pack. Charges fine with the same cable using my HTC charger.
Sent from my GT-I9100 using XDA App

Which battery pack is this? Do you have any link to it? What mode is the phone when its connected. Is USB debugging enabled?

Same battery pack here, and same problem... Deactivate usb debug and it will charge. Too late for me... Already ordered another battery pack... Oh well...
Inviato dal mio GT-I9100 usando Tapatalk

I'm using a Pebble and it works perfectly

Charging works after reboot
I found a partial solution. I connect the battery pack to the phone as if I would charge it. The GS2 does not show any sign of charging. Then I turn the phone of, it automatically boots up again & shows that the battery is charging - guess that works for me.
PS: After a disconnect I have to do ist all over again.
PPS: Battery - http://www.amazon.com/Just-Mobile-4400mAh-External-Portable/dp/B001BWQTOC

kuschel said:
I found a partial solution. I connect the battery pack to the phone as if I would charge it. The GS2 does not show any sign of charging. Then I turn the phone of, it automatically boots up again & shows that the battery is charging - guess that works for me.
PS: After a disconnect I have to do ist all over again.
PPS: Battery - http://www.amazon.com/Just-Mobile-4400mAh-External-Portable/dp/B001BWQTOC
Click to expand...
Click to collapse
This works for me also. Enabling or disabling USB Debug doesn't make a difference with the Gum Pro.

interesting i have an energizer xp8000 and about to try it on my S2 hopefully it works but thanks to this thread have some work arounds to try too :

Glad I am not the only one
Thanks for the info. Until someone finds a better solution I am glad to know it's not me or my phone.

well i can confirm my Energizer XP8000 battery works with S2 fine = 52hrs http://forum.xda-developers.com/showthread.php?t=1115104

XP18000 and ZaggSparq here charges my SGSII fine. It charges both in regular mode and USB debug mode.

just wait a while for extended batteries then you wont need an external battery. i have posted two links in the thread have a look in the thread forum.

I've used Proporta's 3400mAh Turbocharger battery without problems. Haven't tested it fully to see how much it recharges the phone, but I've gotten at least 50% charge back from it.

tids2k said:
just wait a while for extended batteries then you wont need an external battery. i have posted two links in the thread have a look in the thread forum.
Click to expand...
Click to collapse
advantages of a good external battery is being able to charge more than one device i.e. notebook etc

I have the exact same issue when using a mini USB charger with a Motorola Mini to Micro USB converter. When I connect my charger, a pop-up on the notification bar shows "USB host cable connected", and it won't charge until I power off the phone. When I plug the charger while the phone is powered off, instead of showing the charging animation, it will boot up instead and start charging. Charging using the stock charger or PC work just fine. And I thought I was the one that created this complication while flashing different ROMs and kernels, but it seems like an issue with s2 phones.
Sent from my ADR6350 using XDA App

I found that a lot of cell/mobile phones will not charge useless the two data lines on the usb adaptor are connected together , I have modified a number of usb adaptors myself to get them to work, some phones need certain resistances on the data lines before they will charge.
I use to have a Samsung galaxy tab 7" and it was super fussy about the chargers it would work with, I found this thread and this guy had found an usb to usb adaptor that has all the need fixes so you can easy make any usb charger work.
All my usb adaptors seem to work with my SGS2 without any adaptor so i dont know if this would work for you.
EDIT : unless you know what you are doing, dont do it.
The links are below to the relevant information.
http://forum.xda-developers.com/showthread.php?t=999366
http://androidforums.com/galaxy-tab...aptor-get-fast-charge-3rd-party-chargers.html

I bought this and guess what:
http://www.amazon.co.uk/TeckNet-Dua...dible-Blackberry/dp/B000NDQ92W/ref=pd_cp_ce_1
the phone is discharging rather than charging while the battery icon shows that it charges.
more specific: I connect the phone to USB 1A port, I hear the beep tone and I see the battery icon turns to thunder icon , just the normal situation which shows that the phone is in charging mode. OK?
IF I use the phone (i.e. browsing with WiFi) the phone's battery level is dropping down instead of getting up. I use a battery app and I can check realtime the percentage. I must have the phone in standby on order to get charged!
Unbelievable but true! The external battery cannot hold the consumption while in use, even when connected to 1A port!!!

solution - how to charge SG2 with Gum Pro
Hello kuschel,
For me the following solution helped:
Just plug in your cable to the battery, switch it on. Then plug your cable into the phone but veeeeryy slow until the "MTP application" pops up. After that you can move the plug to its final position normally - your phone is loading.
For me it looks like to be a software issue - since I updated my phone to the current KIES version and rooted it (German KF3 Samsung original) I've had that issue no more...
Cheers
Zap

Zaphod_b_1 said:
Hello kuschel,
For me the following solution helped:
Just plug in your cable to the battery, switch it on. Then plug your cable into the phone but veeeeryy slow until the "MTP application" pops up. After that you can move the plug to its final position normally - your phone is loading.p
Click to expand...
Click to collapse
Well look at that. Worked first time and now my mobile gum battery pack is charging the phone just fine.
Which is a real shame as I have now ordered a replacement battery pack and the gum pro was actually really small and compact for a 4400mah device.

Phone doesn't know it's plugged in.

When the phone is off and plugged into the wall, it charges. When the phone is on, and I plug it into the wall or computer, the phone doesn't know it's plugged in.
I ordered a brand new usb charging flex jack and replaced the old one, still the same problem. What gives?
EDIT: I am stock. Not rooted.

Does this happen on the original cable also?
Have you tried wiping?
Is Fast Charge on?

Fk. It doesn't even charge from the wall! When the phone is off, it has the animation that says it's charging when i plug it in the wall. I left it plugged into the wall overnight. This morning I took a look at the phone, and it didn't charge!
Oh noez, what should i do?
Also, I don't have the original cable. I'm using an HTC one.
EDIT: Dafuq?! I found an LG charger. Apparently the phone knows that it's charging when I charge with that. The thing is, that charger is just a charger; it's not a usb cable+ an adaptor. So I can't use it for adb and such.
What is Fast Charge?

convolution said:
Fk. It doesn't even charge from the wall! When the phone is off, it has the animation that says it's charging when i plug it in the wall. I left it plugged into the wall overnight. This morning I took a look at the phone, and it didn't charge!
Oh noez, what should i do?
Also, I don't have the original cable. I'm using an HTC one.
EDIT: Dafuq?! I found an LG charger. Apparently the phone knows that it's charging when I charge with that. The thing is, that charger is just a charger; it's not a usb cable+ an adaptor. So I can't use it for adb and such.
What is Fast Charge?
Click to expand...
Click to collapse
You should mention what ROM you're on (and version) so that no one else makes the same mistake I did in assuming you had a custom ROM and that Fast Charge is on. It's a feature that makes sure that whatever charges it is recognised as AC 1amp charger as some chargers aren't designed well enough (I believe it involves a single solder point) to report themselves as capable of 1A. If it doesn't report as AC to Android, it will charge at 500mA instead (it assumes USB power). It sometimes causes problems with connecting to PC via USB.
Get another USB cable, this time none of that fancy **** go straight to OE Samsung or something.

=O I thot all usb cables are made equal! So I can't use an HTC usb cable? The dude didn't sell me the phone with a cable T.T
Also, I'm stock. I am not even rooted.

My nexus just started acting stupid when I plug it in also.
Mine sat in a drawer for a few weeks and when I plugged it in to charge, it wouldn't.
What I did was this.
plug device into charger
remove battery for a few seconds
replace battery
press power button
phone powered up and began charging.
Even now, it still sometimes doesn't recognize the charger and I have to unplug and plug it in until it does.
I use a rocketfish cable.

convolution said:
=O I thot all usb cables are made equal! So I can't use an HTC usb cable? The dude didn't sell me the phone with a cable T.T
Also, I'm stock. I am not even rooted.
Click to expand...
Click to collapse
Some devices are picky, you'd think that all USB cables are made equal (I did too) but some just don't work well with certain devices. I've had printers th... wait printers always have **** problems... I've had uh... usb extensions not work well with some Wifi dongles and such. My old milestone didn't like the Samsung cable either (yet the Moto cable works perfectly on gnex)

=O. Then it has to be the usb cable! No way it's not!
I ordered one on ebay =D
Rooted Gnex here I come!

dmappdev said:
My nexus just started acting stupid when I plug it in also.
Mine sat in a drawer for a few weeks and when I plugged it in to charge, it wouldn't.
What I did was this.
plug device into charger
remove battery for a few seconds
replace battery
press power button
phone powered up and began charging.
Even now, it still sometimes doesn't recognize the charger and I have to unplug and plug it in until it does.
I use a rocketfish cable.
Click to expand...
Click to collapse
Thank you dmappdev,
I followed your procedure (feel like talking about surgery here, which isn't too far from topic); I'm convinced that it helped in some way, directly or indirectly... as at first, my Galaxy S Advance still wouldn't recognize/charge my phone with:
1. its own charger,
2. my old Galaxy Ace's charger,
3. a universal wall usb plug used with the S Advanced own USB-to-USBmini cable.
My last idea was to use, quote: an old Nokia USB cable connected to my PC... and that worked.
I was much too happy my phone had remembered how to charge to stay mad... But I still tried those three means for charging again, and only the phone's original charger worked now. So the phone's charging ability has been "awakened" in some way, but only for the original charger ...technology is improving, but not the ethics on making life easier for the consumer.
All this was yesterday. This morning (there's more, yes), I saw my phone indicating a 100% charge although it had been disconnected from charge for several hours - something that had already happened once yesterday, before the unable-to-charge situation; a simple reboot took care of the problem, the battery status now showing a more realistic 53%.
Any comments to any of the above? If not, thanks again for your tip anyway !!!

Charging Issues: Red Cross in Battery while in USB

Hello,
I have seen posts like: http://forum.xda-developers.com/showthread.php?t=2189978 but i would like to clarify if the GN-5110 does not allow to charge via USB
Battery shows up a Lightning and a Red Cross whenever i plug it in to the USB, the thing is that it is able to read/write data to device and charges (slowly but i guess that is because of the 2 amp is not fulfilled by the USB port)
Is this normal within the 5110? I have been using the Original Charger and the Original USB Cable
Thank you and sorry if it was a duplicated thread!

erickosanchezj said:
Hello,
I have seen posts like: http://forum.xda-developers.com/showthread.php?t=2189978 but i would like to clarify if the GN-5110 does not allow to charge via USB
Battery shows up a Lightning and a Red Cross whenever i plug it in to the USB, the thing is that it is able to read/write data to device and charges (slowly but i guess that is because of the 2 amp is not fulfilled by the USB port)
Is this normal within the 5110? I have been using the Original Charger and the Original USB Cable
Thank you and sorry if it was a duplicated thread!
Click to expand...
Click to collapse
it doesn't work with the note 8 as well...

eyecon82 said:
it doesn't work with the note 8 as well...
Click to expand...
Click to collapse
So, there is nothing wrong with it so far? Ok, not sure if rooting causes anything with it but Ok
Thanks for the Quick Response, already know how to bring it back to Factory Mode just in case something fails

erickosanchezj said:
So, there is nothing wrong with it so far? Ok, not sure if rooting causes anything with it but Ok
Thanks for the Quick Response, already know how to bring it back to Factory Mode just in case something fails
Click to expand...
Click to collapse
nope...nothing wrong with it...it's standard if you're rooted or not....
a USB plug via computer doesn't provide enough amps to fully charge it...Even though the red cross is there and you leave your tablet off, it will charge slowly
I would suggest trying out galaxy charging current from the appstore...you can monitor how many amps are being delivered depending on your charging methods
https://play.google.com/store/apps/details?id=com.abmantis.galaxychargingcurrent.free&hl=en

eyecon82 said:
nope...nothing wrong with it...it's standard if you're rooted or not....
a USB plug via computer doesn't provide enough amps to fully charge it...Even though the red cross is there and you leave your tablet off, it will charge slowly
I would suggest trying out galaxy charging current from the appstore...you can monitor how many amps are being delivered depending on your charging methods
Click to expand...
Click to collapse
Thank you for your quick replies will install it when i have a break here at work

[Q] SGT 3 10.1 wont turn on

My sgt 3 wont turn on. haven't used it about like 2 months, so It has been completly shut down, now when Im trying to charge it it says, "Voltage to low, need to be above 3.4v" And Im charing with an iPad adapter, which should be fine, right? I dont have the original charger.
Actually I dont know what rom I even use, think it was CAGROM, not sure. How do I start it up? Cant get to recovery even..

Do you have another Samsung device? Or any recent device. While it may seem like the USB chargers would all have the same voltage, they do not. I have plugged my Galaxy S5 into the port on a Charger delivered with an iPhone 5s and it charged much more slowly.
I suggest trying a different USB adapter. If it still does not charge you may have to open the Tab unplug and re attach the battery cable.

CAG-man said:
Do you have another Samsung device? Or any recent device. While it may seem like the USB chargers would all have the same voltage, they do not. I have plugged my Galaxy S5 into the port on a Charger delivered with an iPhone 5s and it charged much more slowly.
I suggest trying a different USB adapter. If it still does not charge you may have to open the Tab unplug and re attach the battery cable.
Click to expand...
Click to collapse
Yes I've but that is for a Nexus 5 (LG original), and the adapter is pretty small, dont think it's 3.4v in that one. I've tried diffrent cables, and that didnt help.

agdi said:
Yes I've but that is for a Nexus 5 (LG original), and the adapter is pretty small, dont think it's 3.4v in that one. I've tried diffrent cables, and that didnt help.
Click to expand...
Click to collapse
agdi,
you can try plugging you tab to a powered usb port on your pc.
leave it sit overnight, if you can power it on come morning,
turn off wifi, mute sound, disable location/sync and drop you screen brightness as low as it will go,
then suspend your tab and leave it connected to suck up more of a charge.
your charger needs to be
input 100-240V~ 50-60Hz 0.35A
output 5.3V===2.0A
m

I got this one charging that my sister dropped off to fix by removing the back un-clipping the battery connector then clipping it back in it back in
https://www.youtube.com/watch?v=9lDOWB6els0

[q] dead tablet!!! Help please

hi my good friends
today i got a weird problem with my tab
its better to say like that: my battery percent dropped from 9 percent to 1 percent and then powered off.
after that my tab WONT TURN ON OR CHARGING AT ALL
i connected it to charger for a while but nothing happened , nothing!
trying to recovery but still nothing! have you seen the same problem?
whats your idea? what i gonna do?
HELP PLZ

Hi.
Did you try disconnect battery about half hour then connect and re-charge?

memooffon said:
Hi.
Did you try disconnect battery about half hour then connect and re-charge?
Click to expand...
Click to collapse
yeah i did that but still nothing

the battery drop sounds like a clibration problem - coupled with a possibly loose usb port? Had usb charging problems once but got it sorted out by trying to plug the usb cable into the port from "different angles" (carefully!)

mandegar93 said:
hi my good friends
today i got a weird problem with my tab
its better to say like that: my battery percent dropped from 9 percent to 1 percent and then powered off.
after that my tab WONT TURN ON OR CHARGING AT ALL
i connected it to charger for a while but nothing happened , nothing!
trying to recovery but still nothing! have you seen the same problem?
whats your idea? what i gonna do?
HELP PLZ
Click to expand...
Click to collapse
You need this tool to find out which one is at fault:
http://www.ebay.com/sch/i.html?_fro...&_nkw=usb+current+and+voltage+tester&_sacat=0
Swap one by one: charger, USB cable, USB port until you find the problem. Make sure to use known working charger, cable for testing. USB port flex cable is not expensive, just around $5 to $9 on Ebay.
You should have ~ 5-->5.2 Volts, 1.5 -->1.7 Amps when charging. Anything lower than these readings, you have a problem with charger or cable or USB port.
You have to use elimination method to find out the problem as there are many unknown factors when battery is not charging.

Beut said:
You need this tool to find out which one is at fault:
http://www.ebay.com/sch/i.html?_fro...&_nkw=usb+current+and+voltage+tester&_sacat=0
Swap one by one: charger, USB cable, USB port until you find the problem. Make sure to use known working charger, cable for testing. USB port flex cable is not expensive, just around $5 to $9 on Ebay.
You should have ~ 5-->5.2 Volts, 1.5 -->1.7 Amps when charging. Anything lower than these readings, you have a problem with charger or cable or USB port.
You have to use elimination method to find out the problem as there are many unknown factors when battery is not charging.
Click to expand...
Click to collapse
Thanks dear friend, i got the solution by replace a new usb port of my tab and now it's alive ?