Develop Bugs

Battery does not charge when the phone is in use!

Hi guys
Im having a weird problem with the battery. It seems battery doesnt charge when im using the phone although it says and shows it charging! It just stays at the same battery percentage it doesnt charge or drain! When i turn off the screen it charges the battery just fine. I called o2 UK where i bought the phone, the rep said when i use the phone it consumes more power than it gets. Can this be true?! Do you think its just a software bug or defective hardware or defective battery?
Sent from my Galaxy Nexus

This is true if you're charging from the USB on your computer. USB ports only provide 500mA. The phone seems to use more than this if you are actively using it. I recommend using a wall plug that provides at last 1 Amp (1000ma) to effectively charge the phone.

How about car chargers? Same thing happens when its charging with the car charger..
Sent from my Galaxy Nexus

If I'm not mistaken, any car charger, whether it's rated at .5A, 1A, or 2.1A is only going to provide .5A to your phone using a typical USB cable. The USB cable that came with your phone has +/- lines for power as well as 2 data lines. If you pickup a "charging only USB cable" it has the data lines shorted so that only the power lines are functional. This type of cable would allow you to take advantage of the higher current 1A and 2.1A chargers - I think anyway. I'm still new to Nexus so I haven't confirmed that, but that's the way it worked on my old phone. I did read somewhere that even with a charging only cable someone wasn't able to pull 1A from their car charger so I don't know if that was a unique issue or if the Nexus doesn't behave the same way. My understanding is the amount of current pulled from the charger is dependent on the charger AND the phone. Using a special charging cable tricks the phone into thinking it's on A/C I guess.

Highest Charging Current for One X

Hi all:
I just did a test on the maximum charging current of the One X using current measurement equipment, and it shows that the One X does not draw above 460mA of current while charging.
With this value, i suspect that the One X limits max charging current at 500mA, which means 3 things:
1) Using any previous generation USB charger (750mA or 850mA or 1A) is good enough. Attempting to use the iPad's charger (rated at 2A) WILL NOT get you faster charging time.
2) When using battery draining applications, the charging current may not be enough for you to both CHARGE and USE the Phone. Thus it might be a better idea to give your One X some dedicated charging time.
3) Some computer USB ports may specify 500mA of output current, but there are many times the available current is less than that. On my USB port, the charging current is only about 300mA at times. So it is better to use a dedicated charger if you have it available. Having that said, however, it is still ok to charge the One X with a USB port at 300mA, just that charging will take longer.
That's all I have to report. Useful information for all.

limestone said:
Useful information for all.
Click to expand...
Click to collapse
Useful indeed. Thanks
Sent from my HTC Vivid using XDA app

I've had mine charge at 780mAh+ before. 1amp HTC charger. Charge rate slows down at the last 20-30% or so. So from 70%-100% battery, charge rates normally slow to about 450mAh.

limestone said:
Hi all:
1) Using any previous generation USB charger (750mA or 850mA or 1A) is good enough. Attempting to use the iPad's charger (rated at 2A) WILL NOT get you faster charging time.
Useful information for all.
Click to expand...
Click to collapse
thanks a lot, i can confirm the statement above because my stock charger is broken and i'm using the ipad's one.
bye

i tried to use the charger for htc chacha and hd2..
both does not work.. red light will light up but after a while it will go off and the phone does not charge..

Charging my HOX while the phones working hard eventually (after say, 5 mins), causes the charge LED to flash green/red. I've had this twice now, once while playing a 720P HD film, and once when playing Glowball.
Both times the phone was very hot, so i'm not sure if the LED thing was to indicate that the battery was too hot to charge, or that the charger could not supply enough power to charge and power the phone at the same time.

fi3ry_icy said:
i tried to use the charger for htc chacha and hd2..
both does not work.. red light will light up but after a while it will go off and the phone does not charge..
Click to expand...
Click to collapse
I'm using my HD2 charger at work every day. It charges at about 400/500mA.
Original charger gives me 650/750mA (lowers at the end)

chaps said:
Charging my HOX while the phones working hard eventually (after say, 5 mins), causes the charge LED to flash green/red. I've had this twice now, once while playing a 720P HD film, and once when playing Glowball.
Both times the phone was very hot, so i'm not sure if the LED thing was to indicate that the battery was too hot to charge, or that the charger could not supply enough power to charge and power the phone at the same time.
Click to expand...
Click to collapse
If the charger cannot cope with the discharge from the game, a pop up message actually appears. If it's blinking means it's too hot. Try not to do anything intensive the last 20-30% remaining (meaning at 70-100% battery).

Nice info thanks
Sent from my HTC One X using XDA

fi3ry_icy said:
i tried to use the charger for htc chacha and hd2..
both does not work.. red light will light up but after a while it will go off and the phone does not charge..
Click to expand...
Click to collapse
Same here... I am using the Atrix 4G (US) charger, it does not charge the phone. The charger gives output of 850mA. It does charge when plugged into the laptop, but I think it will take very long that way.
*edit for posterity*
after a while (I did it when battery had charged to 20%), I could connect the Moto US charger, and it would show as "AC". It would not want to charge through it when the battery was really low (2%), but it would charge via USB in that case. Weird behavior, IMO.

USB limited to 500. AC limited to 1A.
Sent from my HTC One X using xda premium

If you want maximum speed of charging (AC charging) you need:
1A charger with shorted D+ and D- pins (eg, original HTC charger).
iPad charger probably doesn't have these pins shorted, so in this case phone will see it as USB charging (you can check it in settings->battery) and will limit charging current to 500mA. Also lot of aftermarket car chargers will work only in USB mode despite they are able to supply 1A.
Here you can find some info on USB Charging Ports (shorted D+- pins):
http://en.wikipedia.org/wiki/Universal_Serial_Bus#Charging_ports_and_accessory_charging_adapters

When charger is "USB", it will not draw more than 500mA from the charger, and usually it will not charge at all (because the current draw with screen on is higher than 500mA).
When charger is AC, it seems to draw 1000mA - but this is still too low to charge while phone is doing anything, as it will draw 700mA and charge ~250mA top.
I hope this can be tuned in kernel, because it sucks, I also hope that power source can be AC (and not battery - look in dmesg when charger is connected), because battery gets too hot when under load...

colin_ktp said:
If you want maximum speed of charging (AC charging) you need:
1A charger with shorted D+ and D- pins (eg, original HTC charger).
iPad charger probably doesn't have these pins shorted, so in this case phone will see it as USB charging (you can check it in settings->battery) and will limit charging current to 500mA. Also lot of aftermarket car chargers will work only in USB mode despite they are able to supply 1A.
Here you can find some info on USB Charging Ports (shorted D+- pins):
http://en.wikipedia.org/wiki/Universal_Serial_Bus#Charging_ports_and_accessory_charging_adapters
Click to expand...
Click to collapse
Can you post a potential list of car charger which are working at 1mA according to you?

I've only tested few devices:
Extrememac external battery for iPhone/iPad (max 2A) had pins not shorted - USB charging mode on One X (500mA).
Some cheap car adapters - max 1A (according to spec) - USB charging mode on One X.
To fox this problem you should prepare a USB extension cable or micro-usb cable with shorted D+ and D- pins and it should be recognized as AC adapter. I think that also some old HTC phone chargers might come with shorted pins in cable already, but don't know which...

What about the official HTC car charger?

MickyMax said:
What about the official HTC car charger?
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Click to collapse
Yes, that one will charge at the full rate.
There is no list of known good chargers - it's down to luck or a recommendation from someone who found one. You can be sure that any charger advertised as "iPhone, iPad or iPod" compatible will NOT charge your One X at the full rate.
I found one recently in a local petrol station shop. It was £5. I took it apart to have a look and the D+ and D- pins are correctly connected together (via a low value resistor) so it charges at the full rate.
So, I might suggest you look for the cheapest Chinese car charger you can.

USB charging not OK inside a car
zvieratko said:
When charger is "USB", it will not draw more than 500mA from the charger, and usually it will not charge at all (because the current draw with screen on is higher than 500mA).
When charger is AC, it seems to draw 1000mA - but this is still too low to charge while phone is doing anything, as it will draw 700mA and charge ~250mA top.
I hope this can be tuned in kernel, because it sucks, I also hope that power source can be AC (and not battery - look in dmesg when charger is connected), because battery gets too hot when under load...
Click to expand...
Click to collapse
Bingo. I also noticed that when I have the screen on at 100% brightness, GPS and Bluetooth on, i.e. in the car, the USB charger cannot even keep up with the battery drain.
On top of that, the battery gets really hot.
I did not have any of these issues with my SGS2, and frankly, I think it's very disappointing. One should at least be able to stay on the same battery level while doing nothing too fancy and on USB inside a car.

A380 said:
Bingo. I also noticed that when I have the screen on at 100% brightness, GPS and Bluetooth on, i.e. in the car, the USB charger cannot even keep up with the battery drain.
On top of that, the battery gets really hot.
I did not have any of these issues with my SGS2, and frankly, I think it's very disappointing. One should at least be able to stay on the same battery level while doing nothing too fancy and on USB inside a car.
Click to expand...
Click to collapse
There are a lot of factors in the charging current. When you charge, the battery will heat up during the process, especially towards the end of the charging cycle. If you are using your phone at the same time and cause even more heat and charging may slow down to prevent overheating. Also, as mentioned prior, charging slows down as capacity is reached. 100% brightness, GPS, and Bluetooth all on has always walked the fine line of just barely keeping up on my past phones on a 500 mA USB charger. On top of that, this phone is a lot more powerful than an SGS2 and the T3 and big screen produce more heat which may be slowing your charging more.
The problem is a lot of cheap chargers that the phone thinks are USB chargers, not AC chargers, thus causing them to only charge at 500 mA. If you have a proper charger, or a properly modified charger, you should get more like 1A, assuming conditions are right.
In the past I've used Battery Monitor Widget from the Play store to show my charging current on a widget, as well as track and graph battery use, charging current, temperature, etc. Might want to give it a try if you're more interested in charging details.

Im using my htc desire charger and cable (the one that splits in two). It works fine for me but it does take a while to get a full charge. Should i use the charger and cable that came with the phone?

USB from computer and car charging really slow....

Hi Guys,
I have a thinkpad which has regular USB and also a fast charge USB port. They have worked fine in the past on other phones and I used to see at least 1 amp charge rates. (on the fast charge port)
Using either port on the 20 X I only get about 200 ma charging rates?
I'm using "Ampere" to get the charging rates, it is definitely charging slower than normal...
Have you guys noticed this?

Also of note, It charges really slow from my car as well. On the hour drive home the phone only went up 4%. (This is a VW using android auto)

I think all bets are off when your using 3rd party chargers. I think Huawei might have some official accessories that you may need to buy.

jeradjohnso said:
I think all bets are off when your using 3rd party chargers. I think Huawei might have some official accessories that you may need to buy.
Click to expand...
Click to collapse
I have a bunch of phones and every single one of them charges at normal charging rates off my laptop and in my car, this is pretty strange...

Huawei uses a completely different setup from QC 3 from charger to cable . How does it charge with the supplied charger and cable that you received with your phone? If you buy extra chargers for home or car make sure they say they do Huawei "Supercharge". They are a little hard to find but they are out there. Make sure the USB cable is rated for 5a(amps)

Cccmachins said:
Huawei uses a completely different setup from QC 3 from charger to cable . How does it charge with the supplied charger and cable that you received with your phone? If you buy extra chargers for home or car make sure they say they do Huawei "Supercharge". They are a little hard to find but they are out there. Make sure the USB cable is rated for 5a(amps)
Click to expand...
Click to collapse
I haven't even used the included charger and cable, but plugged in at the house I do see 2 amp charge rates which is great.
The downside is that in the car with android auto I can't really plug it into anything other than the car's USB and that give me a really slow trickle charge. This is where a bulk of my charging occurs since I drive for work so much. Basically I have never charged my other phones outside of the car, I just use android auto all the time and the batteries are always topped off. So not being able to charge from car or laptop is not a deal breaker at all, but it certainly means I need to start carry a charging cube around everywhere.
Just seems odd for such an expensive flagship phone to not charge correctly via USB like every other phone I have ever had.

Try the supplied charger and cable just to make sure you do not have a defective phone. When you plug in the cable to charge watch your screen. It should show your battery percentage and a short lighting bolt. Then in just a second it should change to a long lighting bolt and say super charging. If it does that you know your phone is charging correctly. Take your Huawei supplied cable and use it on your laptop and car and see if that doesn't increase your chances speeds.

Cccmachins said:
Try the supplied charger and cable just to make sure you do not have a defective phone. When you plug in the cable to charge watch your screen. It should show your battery percentage and a short lighting bolt. Then in just a second it should change to a long lighting bolt and say super charging. If it does that you know your phone is charging correctly. Take your Huawei supplied cable and use it on your laptop and car and see if that doesn't increase your chances speeds.
Click to expand...
Click to collapse
I gave the original cable a shot and it still basically charges at 200-250ma from my laptop. Very odd indeed. Not even seeing the normal 500ma that you would get on a regular USB port. (Tried both standard and high charge rate USB ports on my lenovo)
Anyone else seeing this behavior?

Charging Problem Solved "I Think"

I have been having problems charging my LG V20. When driving and streaming music with Waze I notice that I'm loosing charge capacity, so I have to only use Waze when absolutely necessary, during traffic jams or finding a restaurant or store etc. I keep getting intermittent "Slow Charging" or "Use OEM Charger & Cable" messages. I don't have the OEM charger or cable so I have been purchasing chargers & cables. I bought a 4 port 12V charger with QC 3.0 expecting that to solve my problem. The charger didn't change anything. So I bought a few USB 3.0 cables and just one time I got a "Fast Charging" session. I read a review about a charger like mine and the review rated the charger as poor. So I bought another QC 3.0 charger and went out to the car with the new charger and all my C type cables. Went through all 5 of my 3 ft cables and once again I keep getting intermittent "Slow Charging" or "Use OEM Charger & Cable" messages with the new charger. Bummer. I also have two short 25cm cables that I tried in desperation and Wow, both of these short cables produce consistent "Fast Charging" sessions. With both chargers! The 25cm cables are too short to reach where I mount my phone so I just ordered a 50cm Ugreen USB C Cable 5A Super Charge Cable. I'm hoping a short (less resistance) high quality cable will solve my problem. Any suggestions on another brand 50cm cable I should order as a backup?

rredmed said:
I have been having problems charging my LG V20. When driving and streaming music with Waze I notice that I'm loosing charge capacity, so I have to only use Waze when absolutely necessary, during traffic jams or finding a restaurant or store etc. I keep getting intermittent "Slow Charging" or "Use OEM Charger & Cable" messages. I don't have the OEM charger or cable so I have been purchasing chargers & cables. I bought a 4 port 12V charger with QC 3.0 expecting that to solve my problem. The charger didn't change anything. So I bought a few USB 3.0 cables and just one time I got a "Fast Charging" session. I read a review about a charger like mine and the review rated the charger as poor. So I bought another QC 3.0 charger and went out to the car with the new charger and all my C type cables. Went through all 5 of my 3 ft cables and once again I keep getting intermittent "Slow Charging" or "Use OEM Charger & Cable" messages with the new charger. Bummer. I also have two short 25cm cables that I tried in desperation and Wow, both of these short cables produce consistent "Fast Charging" sessions. With both chargers! The 25cm cables are too short to reach where I mount my phone so I just ordered a 50cm Ugreen USB C Cable 5A Super Charge Cable. I'm hoping a short (less resistance) high quality cable will solve my problem. Any suggestions on another brand 50cm cable I should order as a backup?
Click to expand...
Click to collapse
You need to check the voltage and amperage of your charger and then see if you can find some specs about your device and look for what voltage and amperage charger it is supposed to have. The power output of the charger is more relevant to charge capacity than the length of the cable being used.
Sent from my LGL84VL using Tapatalk

Droidriven said:
You need to check the voltage and amperage of your charger and then see if you can find some specs about your device and look for what voltage and amperage charger it is supposed to have. The power output of the charger is more relevant to charge capacity than the length of the cable being used.
Sent from my LGL84VL using Tapatalk
Click to expand...
Click to collapse
How do you explain multiple charges working in quick charge mode only with the short cables I have and not with any of the other cables, other than a problem with the cables?

rredmed said:
How do you explain multiple charges working in quick charge mode only with the short cables I have and not with any of the other cables, other than a problem with the cables?
Click to expand...
Click to collapse
Did you do any investigating to determine what voltage and amperage charger is required by your specific device? Did you compare that to the chargers that you have in order to verify whether the chargers you have are correctly rated for your device? That is a more important detail than you realize.
Yeah, I know what you're probably thinking, "I've never had a problem using a different charger to charge other devices that I have used/owned, how can it be an issue now?"
The answer to that is, not all devices are equal.
Maybe the charger is rated lower than is required by the device and when used with the longer, higher resistance cords, it can't provide enough power, but when using the short cord it's lower resistance might be enough to make up the difference. I've had this issue on a Kindle tablet, the charger for my phone would not charge the device quickly enough unless the device was turned off, it would even give the "may not charge" message when I would plug it in, but when I bought the proper charger for it, VIOLA!!, it charged correctly. Well what do you know, the correct charger and cord actually charges it correctly, imagine that, who would have ever thought that using the correct hardware would get the correct results. I'm being sarcastic, but you get my point.
It has more to do with how much the charger itself can provide than it does the length of the cord.
For example, if you had the original charger and the original cord, it would provide the correct amount of charge, but if you were to use a 10ft cord with the stock charger instead of the 3-6 foot that comes with the device, you would see a reduction in how much power it supplies, even more so if the charger is plugged into a drop cord/extension cord at the same time. I've had this exact issue on a couple of devices.
Another example is if you have a charger that is rated below what the device requires and you used the 3-6 ft stock cord, it could decrease the amount of power supplied by the charger block because the charger can't supply enough power to overcome the resistance of the stock cord, but when using the shorter, lower resistance cord with the lower rated charger, the cord's resistance could be low enough that it allows enough power to be supplied.
I'm not saying that it is 100% the issue that you are having, I'm saying that it is something to look into because it is more likely to be your issue because it is common for devices to charge faster, slower or not at all when using a charger that has a different rating than required by the device. Other possibilities are a damaged USB port on the device or the software has become corrupted, you would probably need to flash the stock firmware to fix the corrupted software.
Sent from my LGL84VL using Tapatalk

Car charging issues (standard S20 5g)

So i've had this phone for a few days and took a road trip and camped this weekend. To say the least, I had a good feel of battery usage of this phone for my typical tasks.
During my road trip, my phone started with about 92% when i threw it on the charger and started driving. I noticed it was charging up to 96% and it started to discharge slowly after about an 45 minutes of driving The phone indicated it was being charged. When I purchased this phone I also purchased a 6a car charger (dual port, 3a each), and also some USB-C to USB-A cables rated at 18w. If I disconnected the power for a little bit, and reconnected, it would charge maybe 3-8% before stopping again and I would repeat the cycle to ensure I had enough battery to allow navigation to take me to my destination. Luckily, I made it to my campsite with 82% battery to spare.
Now the strange thing- when I left this morning to come back home, I had 100% on my phone as I charged it with a battery bank fine. I left the phone plugged in to my car charger as I left, and it stayed at 100%. I even let the phone discharge to 94%, and plugged it in and it was able to charge to 100% with the navigation on as well as pandora.
Am I doing something wrong? Am I supposed to be using a USB-C type charger? Maybe I need a better rated cable?
Would love some help. I'm coming from an S7 edge so a lot has changed. thanks!

liberalswine said:
When I purchased this phone I also purchased a 6a car charger (dual port, 3a each),
Click to expand...
Click to collapse
I'm going to guess the charger just isn't that good, which one was it?

peachpuff said:
I'm going to guess the charger just isn't that good, which one was it?
Click to expand...
Click to collapse
It's a qualcomm based charger. https://www.amazon.com/AILUN-Charger-Qualcomm-Adapter-Compatible/dp/B01N8PPY1H

Sometimes while driving these things can work loose in the lighter socket, a slight touch fumbling around near it (my dash cam does this), or some bumps in the road.
I suspect on your outbound trip the charger might have been getting intermittent power from being not quite pushed "home", but on the return trip you could have pushed it in harder and it stayed put.

yrp888 said:
Sometimes while driving these things can work loose in the lighter socket, a slight touch fumbling around near it (my dash cam does this), or some bumps in the road.
I suspect on your outbound trip the charger might have been getting intermittent power from being not quite pushed "home", but on the return trip you could have pushed it in harder and it stayed put.
Click to expand...
Click to collapse
this wasn't the issue as I tried unplugging it and tried various 12v sockets in my car. However I think I did figure out my issue. The new charger i'm using does not use the "PD" protocol that the newest samsung phones use. Also, although the car charger i have is a qualcomm 3.0 protocol, and 36w- it's actually at 18w per usb A socket. The s20 wall charger is rated at 25w- so I'm now looking for a usb car charger that has a dedicated usb c socket with at least 25w of power and supports PD and pps

I'm using this one, no issues https://www.amazon.co.uk/gp/product/B07VP3HLGW/

jonboi said:
I'm using this one, no issues https://www.amazon.co.uk/gp/product/B07VP3HLGW/
Click to expand...
Click to collapse
is "super fast charging" enabled with that charger? I just ordered: https://www.amazon.com/gp/product/B077ZRBPNB/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1
I read somewhere that the newer samsung devices require PPM protocol in order for super fast charging rates to be active (as well as PD)

liberalswine said:
this wasn't the issue as I tried unplugging it and tried various 12v sockets in my car. However I think I did figure out my issue. The new charger i'm using does not use the "PD" protocol that the newest samsung phones use. Also, although the car charger i have is a qualcomm 3.0 protocol, and 36w- it's actually at 18w per usb A socket. The s20 wall charger is rated at 25w- so I'm now looking for a usb car charger that has a dedicated usb c socket with at least 25w of power and supports PD and pps
Click to expand...
Click to collapse
I've reconsidered using fast chargers after the purchase of the S20, we've started using old 7.5W and 10W AC power adaptors. The 7.5W charger brings the phone up from about 30% to 80% in about 75min and I am fine with that. I have also used the 5W S3 charger but I think I'm happy with using the 7.5W charger.
If I need a fast boost I can always pull out the 25W charger.
I did buy a Belkin 18W PD car charger with the phone thinking "yeah, I need this" but now I will only use it for emergency charging. Tomorrow I'll pull out an old 10W car charger and plug the phone into the 10W socket while I drive around, see what happens.

Well I got into the car at 10:55 with the battery around 26%, plugged it into an old car charger I bought for our S4s (Pleomax, apparently OEM for Samsung) which has 2A & 1A outlets. It's not obvious on the charger which outlet is which but turns out I used the 1A outlet (AccuBattery showed the charging current hovering around 1000 mA).
Anyway, after 1hr of driving to my destination with a 5min break to fill up, the battery reached 66% so the 1A car charger raised the battery by 40% in about 60min, which I think is quite acceptable.
Car connected by BT for phone/SMS, received 1 call only. GPS/NFC etc are usually kept off.