Develop Bugs

Tab is going into MTP mode and wont charge.....

This is hooked up to the Samsung charger , I have-no idea what the heck is going on..... anyone else?
Sent from my GT-P7510 using xda premium

pdxrealtor said:
This is hooked up to the Samsung charger , I have-no idea what the heck is going on..... anyone else?
Sent from my GT-P7510 using xda premium
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if you turn off the tab and then plug it in, does the battery screen come on and does the device charge?

pdxrealtor said:
This is hooked up to the Samsung charger , I have-no idea what the heck is going on..... anyone else?
Sent from my GT-P7510 using xda premium
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My guess - faulty resistors in the charger or one of the wires in the cable is dead.
The Tab expects to see USB D+ and D- shorted together and floating at 1.2 volts, set by a resistor divider in the charger.
Does the cable work fine for USB data transfer?

I think the user has possibly used the wrong wording. If he's seeing the MTP mode come on that means that he's just got it plugged into a USB port on a machine whilst the tablet is on (whilst using the "charger" cable).
Simple answer if that's the case. The tab doesn't charge that way as there isn't enough power coming through the port to keep the tab on and charge. If you however switch off the tab, you should find it charges from the USB port
If not, let us know.

Actually the tab is going into MTP mode while plugged into the outlet, using the supplied Samsung power adapter and supplied 30 pin cable.
I think i need to call Samsung for replacement... although after really thinking about what I just typed I think might be simpler to just buy a new cable online.
Or is it the actual power adapter that's faulty....

Well that is quite odd then. Does the tab charge if you switch it off and then plug it into the outlet / pc?

Chiribo said:
I think the user has possibly used the wrong wording. If he's seeing the MTP mode come on that means that he's just got it plugged into a USB port on a machine whilst the tablet is on (whilst using the "charger" cable).
Simple answer if that's the case. The tab doesn't charge that way as there isn't enough power coming through the port to keep the tab on and charge. If you however switch off the tab, you should find it charges from the USB port
If not, let us know.
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Click to collapse
No, his wording was explicit enough to indicate that the tab is falsely detecting the factory charger as a USB host. This will happen with iPad/iPod/iPhone chargers, and would happen with the factory charger if the cable were faulty (D+ or D- open) or if the charger were faulty.
Again, to the OP: Does the cable work for syncing to a PC to transfer data? If it doesn't work at all, that's a sign that D+ or D- of the cable is open.

Meh, some people use words such as charger and cable interchangeably in terms of their truer intended meanings at times.
I was simply trying to cover that base.

Not sure if the cable works for data ....as I do everything over the air. The cable was giving me troubles at the tab end, (loose connection) but lately has been working OK.
I also haven't been charging and using at the same time lately either. I really needto contact Samsung and talk to them about a warranty replacement, but I have a feeling I'd be better off just buying a new one off Amazon or the like....
Sent from my GT-P7510 using xda premium

Wrong section n00b!!!!

akarol said:
Wrong section n00b!!!!
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Click to collapse
Thanks for that...
Sent from my Nexus S using XDA Premium App

pdxrealtor said:
This is hooked up to the Samsung charger , I have-no idea what the heck is going on..... anyone else?
Sent from my GT-P7510 using xda premium
Click to expand...
Click to collapse
I have the same issue. Check that with different cables. So cable and charger is not the reason

If you're running a ROM with Pershoot's kernel, you can "Enable Charge From ANY USB" (see link in my signature). If you're running something else, you can make yourself a "DIY Universal Charging Inline Cable" that will trick the Tab into charging off anything (again, see the link in my signature).
But before you go out spending money (even if it's just a little bit of $$$) you should see if the cable works for data transfer between your computer and the tab.
If the cable works, then the "DIY Universal Charging Inline Cable" will keep you going until Samsung sends you a replacement charger.

I had this problem and didn't know what was wrong for a while. It turned out the the charger wasn't plugged in all the way in the outlet. I guess it wasn't getting all the juice it needed.

Am suddenly getting this problem tonight also it sometimes turns my tablet off but won't let me turn it on till I pull the charger out.I've also noticed that if I plug it in when the tab is off the battery sometimes comes up saying it's charging
just plugged the usb lead in to 2 laptops and they both show a usb error

I started having the same problem 2 days ago. All of a sudden i plugged in the wall charger and it went into MTP mode. It will charge if turned off but I've noticed it takes a much longer time to charge. From 3% it took almost 24 hrs to completly charge. Thinking that I'll have to buy a new wall charger.

Please help
Another one about charging...
My 10.1 P7510 takes tooooo long to charge, even beeing off. If I connect it to my notebook data transfer is correct but battery keeps draining, or at least not charging. If I turn it off (either connected to PC or charger) the charging icon appears correctly. I must say that cable (and charger) are not the original ones
Is it a problem of the Tab, or cable, and/or charger ?

I think the charger did not have enough current to charge the tab while still using it. The stock charger should be rated at 5V 2A. I tried another charger with only 1A and it still worked. Anything lower than 1A will end up showing that MTP mode.
Sent from my GT-I9100 using XDA App

I've got the same problem myself except I had to clean the charger clean of marinade sauce (it's a long story, don't ask!) and I took the device back to my local Vodafone store (I got it on a Mobile Broadband contract) as I thought it was faulty. They claimed the device was working fine although they used their own cable and not mine. They also claimed that if it was the cable, I should be easily able to buy one.
I tried buying one in every store I could think of, including the phone repair shops and they didn't sell them at all!
It's just a shame that a tablet like this which could have been a great tablet is crippled not only with no MicroSD slot, but also using a crappy proprietary socket whereas all the other Tabs have a MicroSD slot/uses a Micro USB port.
(I've already ordered a replacement cable from Amazon UK in any case for a reasonable price)

mtp-connected and media scanner running
I bought. My Tab 8.9 last November, only started having this problem since last night. There is red cross and mtp-connected,also,"media scanner running". I am using original cable and adapter that come with the Tab. Has anyone here found a solution?

[Q] Slow Charging?

So when I first got my phone, beside plugging into my laptop, my phone use to charge at a normal rate (which was pretty fast) but recently I've notice that whenever I start charging my phone, a message in the notification would appear saying something along the lines of slow charging due to low current in TA. I hope there isn't a malfunction in my phone.
Can anyone help?

Unless I use the charger that came with the phone, I get that message. I think it's a software thing.

megamaster2 said:
Unless I use the charger that came with the phone, I get that message. I think it's a software thing.
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Click to collapse
But I am using the charger that came with the phone.

Try a different usb cable.
Sent from my LG-LS970 using Tapatalk 2

Make sure the plug is all the way in, it's possible your case (if you have one) is block the plug from fully connecting. I noticed that if I don't push the micro usb plug all the way into the charging port, I will get the notice that I am in slow charging mode.

I have the slow charging issue when my phone is in ##DIAG# mode. Turn off diag fixes the issue. If not using diag, maybe try changing usb mode from charging only to mtp.. or something?

My problem is that my charge port was jammed full of pocket lint. I used a flashlight, pin and a plastic straw cut to a point to clean it all out, there was just about a small animal in there. The cable went in about a mm further and back to charging full speed.

Stock Cable > Hard to Plug on the Charging Port of the Phone

I just purchased this unit. is it normal that the Stock Cable is Hard to Plug on the Charging Port of the Phone..
i need to try so many times before i can plug the charging cable to charging port of the phone before i can plug it successfully. i'm thinking of breaking the charging port if this is the case? Anyone who have the same concern? Thanks

bong0x00 said:
I just purchased this unit. is it normal that the Stock Cable is Hard to Plug on the Charging Port of the Phone..
i need to try so many times before i can plug the charging cable to charging port of the phone before i can plug it successfully. i'm thinking of breaking the charging port if this is the case? Anyone who have the same concern? Thanks
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Click to collapse
I noticed this as well. hopefully if something gets broken its more likely to be the connector on the cable than the charging port. I have tried a few other cables as well and all are pretty difficult to insert.

Well the way I see it would you rather have it flop around and be loose, or have a night tight fit?
On a more serious note I had the same issue when I first recieved my F400S. After a week or so it got better, you can always try an older micro usb cable thats more broken in to avoid this issue.

when i first got the phone it was like what you've desribed. but after a while, it wasn't an issue anymore, i guess its a good sign that the phone is brand spanking new.

Same for me, hard To plug in ...
Sent from my LG-D855 using XDA Premium 4 mobile app

Hi,
I tilt the usb-connector up (just a bit) while plugging it in.
Greetz

It requires a downward angle tilting towards the device to insert.

Same for me, but once you're using qi charging and Wi-Fi file transfer, you'll hardly ever use the port.

got it! it was like virg** phone. haha..

wow same issue here.
bong0x00 said:
I just purchased this unit. is it normal that the Stock Cable is Hard to Plug on the Charging Port of the Phone..
i need to try so many times before i can plug the charging cable to charging port of the phone before i can plug it successfully. i'm thinking of breaking the charging port if this is the case? Anyone who have the same concern? Thanks
Click to expand...
Click to collapse
Only way to get it in is by tilting the cable downward. Tried few cables, they are all doing the same thing. Exchange perhaps?

Sini-Siki said:
Only way to get it in is by tilting the cable downward. Tried few cables, they are all doing the same thing. Exchange perhaps?
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Click to collapse
Tilting the cable to plug in seems to be the norm on pretty much every G3. I doubt exchanging it will help.
Once you've done it for a while, it should become pretty easy to do.

Tilting the cable and just dealing with it are fine, but what happens when you stay finding usb cables that don't want to charge your G3 properly? I have one (very nice) 10ft cable and my phone plays a game of connecting and disconnecting while trying to charge with this cord. This courts does not give me the same problems on other devices. However the G3 charges just fine on all my other cables. Not using this cable is an obvious answer but i worry that the problem could get worse and what if I start having problems with other chargers?

For now, the solution is to tilt the cord slightly downward (or upward, depending on your perspective) as the port is just sliiiiightly more flush with the opening. My advice is to get used to doing this. A broken charger port is really a PITA, so taking an extra 2 seconds to plug it in is the prudent choice. My dad gave me a lot of good advice when I was growing up, and one of the gems turns out to be "don't force things."
As mentioned, once we get some wireless charging back covers on a more accessible basis, we'll all just use wireless charging and never plug in again. Except in the car.

The cable from my old GS4 plugs in very very easily. I haven't tried charging with it tho. I use it mainly for usb mtp.
Posted from my LG-D850

Difficult at first. It did get better for me though. I too thought i had damaged it or that it had shipped that way. And I also thought I was just breaking it more each time I charged and contemplated exchanging LOL. Make sure cord is facing the right way first (im still trying to put it in upside down sometimes), then you do have to tilt it down a bit to get in initially and then it tilts slightly up before fully inserting. It was very diificult to do the first couple days. Day 5 and its way easy. Hope this has helped and put your mind at ease This is my first Android phone and i'm luvin it!

the past new phones i had. was always hard at first to plug it in.
just gotta lube it up

Any new updates on this? I guess tilting the cable a bit is working, but will it ever get to the point it will go straight in? It really appears that this is not a defect but a LG design for the port.
Sent from my LG G3

still the same.. still virgin after many charging cycle

I agree with what was previously stated, after a week with phone, I've become used to putting the cable in. I'm pleased with the tight fit as I've had devices where it feels loose and unsecured.
It ain't nothing but a G thing baby... Lg G3 LGSL990

[Q] a BRAND NEW kind of charging problem

Before everyone starts accusing me of not running a simple search, take it easy, been done. And yet, nothing to help me on the matter.
So here's the thing:
Her phone won't charge. Not when plugged into the wall, BUT when I plug her phone into the computer it is recognized and allows file transfer and everything, but just that - it still won't charge.
Here's what I've found out so far:
- Not a problem with the charger: I'm using the original charger, and it works flawlessly on my own Gnex running PA 4.4
- Nothing wrong with the battery: swap batteries between phones, my phone works fine with her battery, her phone still won't charge.
- When her phone is completely OFF and I plug it in to my PC, it plays the sound of connecting and disconnecting a device, and prompts that it doesn't recognize the USB device. If I tap the power button for a second while it's off (not holding it long enough for it to turn on), it does the same thing connecting-then-disconnecting sounds and "doesn't recognize the USB device".
So - has anyone ever run into this problem before? Know how to fix it? I know the chances are it's just a hardware malfunction, but it's weird because of the ability to transfer files- usually the problem is the reverse.
In the meantime we're using my phone as a charger for both batteries untill we get the spares and wall charger we ordered, but it's a real pain.
Just trying to find a better solution than taking apart the phone and try and fix it or just ordering a new Nexus 5 (which is tempting, but don't really have the money to spend on it...)

-Psycho- said:
Before everyone starts accusing me of not running a simple search, take it easy, been done. And yet, nothing to help me on the matter.
So here's the thing:
Her phone won't charge. Not when plugged into the wall, BUT when I plug her phone into the computer it is recognized and allows file transfer and everything, but just that - it still won't charge.
Here's what I've found out so far:
- Not a problem with the charger: I'm using the original charger, and it works flawlessly on my own Gnex running PA 4.4
- Nothing wrong with the battery: swap batteries between phones, my phone works fine with her battery, her phone still won't charge.
- When her phone is completely OFF and I plug it in to my PC, it plays the sound of connecting and disconnecting a device, and prompts that it doesn't recognize the USB device. If I tap the power button for a second while it's off (not holding it long enough for it to turn on), it does the same thing connecting-then-disconnecting sounds and "doesn't recognize the USB device".
So - has anyone ever run into this problem before? Know how to fix it? I know the chances are it's just a hardware malfunction, but it's weird because of the ability to transfer files- usually the problem is the reverse.
In the meantime we're using my phone as a charger for both batteries untill we get the spares and wall charger we ordered, but it's a real pain.
Just trying to find a better solution than taking apart the phone and try and fix it or just ordering a new Nexus 5 (which is tempting, but don't really have the money to spend on it...)
Click to expand...
Click to collapse
Its the micro USB port the pins are bent homie.
Some pins allow charging some allow data transfer. The ones for charging are damaged in your case.
Sorry to bring bad news.

DR3W5K1 said:
Its the micro USB port the pins are bent homie.
Some pins allow charging some allow data transfer. The ones for charging are damaged in your case.
Sorry to bring bad news.
Click to expand...
Click to collapse
Yup. Just this moment after a really really really close examination of the port and comparing it to my own phone, one tiny half a millimeter peice of metal is bent out of place and broken. Gotta order a new port ASAP and try and change it.
Thanks mate!
But hey, look at the bright side... a fun home project to immerse myself in instead of prepare for my finals! :laugh:

DR3W5K1 said:
Its the micro USB port the pins are bent homie.
Some pins allow charging some allow data transfer. The ones for charging are damaged in your case.
Sorry to bring bad news.
Click to expand...
Click to collapse
Back with worse news. Just replaced my wife's micro USB port on her i9250 GNex, and.... same thing. Still won't charge, computer recognizes it. Now I'm completely baffled. Thought for a moment that maybe I had been such a fool as to have put back in the old port, but unfortunately, it wasn't my stupidity.
Ideas, anyone?

N5110 charging problem

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?
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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