Develop Bugs

Long charging duration. What should I do? Confused! Please advice.

Guys this issue is annoying me. My device is having some charging problems. I have measured the charging time for last two charges, and its taking 3 hours 40 mins for 10% to 100%, and 4 hours from 0% to 100%. Where most people are saying it takes around 3 hours, from a complete drain to full 100%.
So have any of you guys ever measured the actual time of charging? A lots of comments I see say around this or around that, or from 2 hours to 3 hours, well that's not what I need. If anyone has measured the time then please post here. I'm thinking about going to SC, but I don't wanna go there until I'm totally sure that there is a problem.
PS: I'm talking about Stock charger, (2A) plugged in AC power source. And device should be on, not off.
Btw- There should be a technical answer to this, the charging current is 2A and the battery is 3100 mAh, so how could I do the math?
Thanks in advance.
Sent from my GT-N7100

I don't know the math stuff but why don't you try calibrating the battery - worth trying !

Knowing that info is only half the truth. How the phone charges the battery and how much energy your phone uses during the charge matters too.
Sent from my GT-N7100 using Tapatalk 2

The time taken to charge is a pretty simple mathematical formula. But the rest of the calculation is complicated.
If you phone is on, how bright is the screen, is the display on or off, are you on wifi or network data, are you syncing email every 15 minutes or every hour, are you using the phone to send messages during charge, have you got gmail, dropbox, facebook, instagram, whatsapp, etc etc etc all doing a sync at regular intervals during the charge?
All of those things will use up some of the charge as its going in, so the charger is fighting against you.
I've been charging off usb at work and struggled to gain 20% in 8 hours because of my usage pattern.

Theoretical time for charge is about 1:30 hrs. Reality, start and ending charge should slow down (for safety), heat slow downs, plus usage of phone as spoken above I guess it could take up to 3 hrs.
It's not great to do a full charge regularly. I tend to keep mine between 40-90% for maximum life cycle of battery.
Perhaps try resetting battery stats? Try a different 2a charger?
Sent from my GT-N7105 using Tapatalk 2

wisewood said:
The time taken to charge is a pretty simple mathematical formula. But the rest of the calculation is complicated.
If you phone is on, how bright is the screen, is the display on or off, are you on wifi or network data, are you syncing email every 15 minutes or every hour, are you using the phone to send messages during charge, have you got gmail, dropbox, facebook, instagram, whatsapp, etc etc etc all doing a sync at regular intervals during the charge?
All of those things will use up some of the charge as its going in, so the charger is fighting against you.
I've been charging off usb at work and struggled to gain 20% in 8 hours because of my usage pattern.
Click to expand...
Click to collapse
I was testing how long it takes to charge, so I didn't even touch the phone while it was charging.
JLneonhug said:
Theoretical time for charge is about 1:30 hrs. Reality, start and ending charge should slow down (for safety), heat slow downs, plus usage of phone as spoken above I guess it could take up to 3 hrs.
It's not great to do a full charge regularly. I tend to keep mine between 40-90% for maximum life cycle of battery.
Perhaps try resetting battery stats? Try a different 2a charger?
Sent from my GT-N7105 using Tapatalk 2
Click to expand...
Click to collapse
1:30 hours? Could you kindly explain how?
And I've wiped my device fully, also reseted battery stats.
One thing I'd to next is, I'll turn the device off and see how long it takes then.
Sent from my GT-N7100

jujuburi said:
Guys this issue is annoying me. My device is having some charging problems. I have measured the charging time for last two charges, and its taking 3 hours 40 mins for 10% to 100%, and 4 hours from 0% to 100%. Where most people are saying it takes around 3 hours, from a complete drain to full 100%.
So have any of you guys ever measured the actual time of charging? A lots of comments I see say around this or around that, or from 2 hours to 3 hours, well that's not what I need. If anyone has measured the time then please post here. I'm thinking about going to SC, but I don't wanna go there until I'm totally sure that there is a problem.
PS: I'm talking about Stock charger, (2A) plugged in AC power source. And device should be on, not off.
Btw- There should be a technical answer to this, the charging current is 2A and the battery is 3100 mAh, so how could I do the math?
Thanks in advance.
Sent from my GT-N7100
Click to expand...
Click to collapse
Mine takes 2.5 hrs to charge from 10% to 100% with phone on using stock wall charger and cable (when charged continuosly with no activity on phone). It charged from 1% to 96% in 2.5 hrs with phone switched off (switched it on exactly after 2.5 hrs to check). But, usually i avoid charging my phones to full 100% (also always charge it when at 10%).

Dpk1 said:
Mine takes 2.5 hrs to charge from 10% to 100% with phone on using stock wall charger and cable (when charged continuosly with no activity on phone). It charged from 1% to 96% in 2.5 hrs with phone switched off (switched it on exactly after 2.5 hrs to check). But, usually i avoid charging my phones to full 100% (also always charge it when at 10%).
Click to expand...
Click to collapse
Try with another note 2 charger first. The thing with these chargers is they will behave erratically when there is voltage fluctuation or if you use in a train and other cases. So go to SC and tell them its taking almost double time for me to get charged. They will replace the charger as well the cable. My cousin has the same problem with s3. He got it replaced by the SC.
Sent from my GT-N7100 using Tapatalk 2

Thanks Chaitanya. But the SC guys are so stupid here. First thing they do always are to take the phone in their custody and deal with it badly. Still I will ask them to replace the charger and check.

Some of us have noted that if you let the screen time out and not manually shut screen off after connecting the charger. ..The charging is faster. . If you manually shut off the screen. .. The charging is slow.... It is weird but don't know why. .it definitely is happening
handwritten from my note 2 (N7100)

Mine takes about 3 hours to charge fully from 15 %
Sent from my GT-N7100 using xda app-developers app

Op: I said theoretical it will take 1:30.. Realistically it should slow down during stages due to safety reasons.
Mine took probably 3 hours the other day I ran it down, but this was combination of using 1a and 2a charger.
I think on the note 2 it doesn't ramp up power till it gets to 20-30%. Took a while to get there from 2%. If only battery widget was working on the note 2..then I could confirm.
Sent from my GT-N7105 using Tapatalk 2

Are you using the charger that came with Note2 ? I was using my old blackberry charger and it took for ever to charge the phone.
The output of the Note2's charger is more than twice the output of my blackberry charger.

^ Yeah, of course I am using the stock charger that came with Note 2! I'd not create this topic if I had used another charger.
Anyway, after a long week in Service Center now my phone is back, they provided me a new charging adapter (not the cable) and I was very happy because I thought everything will be smooth and like before but guess what? No improvement. It's still taking long! I just measured it for 30 mins exactly, it went from 70 to 83%, i.e 13%, where it should be 24% as stated in this thread,
http://forum.xda-developers.com/showpost.php?p=33585646&postcount=31
Now I am really angry. I will try with another Note 2 USB cable first, if that fails, there is something wrong with the device, I guess?

jujuburi said:
^ Yeah, of course I am using the stock charger that came with Note 2! I'd not create this topic if I had used another charger.
Anyway, after a long week in Service Center now my phone is back, they provided me a new charging adapter (not the cable) and I was very happy because I thought everything will be smooth and like before but guess what? No improvement. It's still taking long! I just measured it for 30 mins exactly, it went from 70 to 83%, i.e 13%, where it should be 24% as stated in this thread,
http://forum.xda-developers.com/showpost.php?p=33585646&postcount=31
Now I am really angry. I will try with another Note 2 USB cable first, if that fails, there is something wrong with the device, I guess?
Click to expand...
Click to collapse
I really don't think it's your device or your battery for that matter. I have a question as well (sorry to hijack...). When you were charging it for 30 mins, were you using it? Was the screen off or the phone totally turned off? I noticed one night that I had an email notification and the phone did not charge because the notification LED was on all night while I slept and it was plugged into my 1A Samsung charger from my original Note. I have yet to check if the charging disconnects itself if the LED comes on. I don't even know if the phone charges at all if the screen is on either. Can anyone confirm? I guess I'll try it out tonight! The battery last forever I got to admit, perhaps most of the time I'm slow charging it at 1A max with the original Note's charger? I guess it does the battery some good
Thanks a bunch!

No pal I am not using the device while charging (because I am testing and measuring the times, that's why I restrain myself from touching it), and it's on, not off.
Anyway, yesterday I went to a friend's home and found he has a Samsung ACE and has same USB port like Note's and I was carrying the charging adapter, so I took that Ace's cable and plugged in to my Note's adapter and let it charge for an hour, and I was amazed and happy to see that it increased 38% in 60 mins. Well this tells me that the USB cable of my Note 2 is gone to heaven.
And oh, if you charge and use the device at the same time it will charge pretty fast even then too. I can confirm this when I first got the device, always was using it and charging, and I was surprised to even then how fast it was charging.

I (and many other users) have similar problems with Galaxy S3. I've made an app that shows the actual charging current: http://forum.xda-developers.com/showthread.php?t=2076078
I'm not sure if it works on the Note 2, but it is worth a try.
Please check if your device is charging at the optimal charging current (I think it is 2000mA for the Note 2 charger, instead of 1000mA as pointed in the SGS3 thread).

[Q] Slow fast charge?

Is everyone really getting the 50% charge in 30 mins? It feels like I am getting about 1% per 1 min of charge time on average. Not sure if that is normal or I have a defect somewhere? Also, is fast charging safe to use for every charge session or is it meant to be used once in a while for emergencies? Thank you.

yes my phone will go from zero to 100% in an hour no problem when using charger that came with phone

oneandroidnut said:
yes my phone will go from zero to 100% in an hour no problem when using charger that came with phone
Click to expand...
Click to collapse
Really? Did it charge like that from the very beginning or did it take a few charges to get to that speed? I think it takes me like 1.5-2 hrs from real low to full charge with fast charge enabled.

burntrat said:
Really? Did it charge like that from the very beginning or did it take a few charges to get to that speed? I think it takes me like 1.5-2 hrs from real low to full charge with fast charge enabled.
Click to expand...
Click to collapse
yup and as long as i can remember it has always done it. It goes stupid fast. went from 30% to full in under 40 mins thing flies

oneandroidnut said:
yup and as long as i can remember it has always done it. It goes stupid fast. went from 30% to full in under 40 mins thing flies
Click to expand...
Click to collapse
Were all your fast charges with the phone on or off?

burntrat said:
Were all your fast charges with the phone on or off?
Click to expand...
Click to collapse
phone on

Hmmm... I am on day 14 with the phone. Wondering if I should return it to vz....

burntrat said:
Is everyone really getting the 50% charge in 30 mins? It feels like I am getting about 1% per 1 min of charge time on average. Not sure if that is normal or I have a defect somewhere? Also, is fast charging safe to use for every charge session or is it meant to be used once in a while for emergencies? Thank you.
Click to expand...
Click to collapse
I used to get those insanely fast charge times; however, recently my phone has been charging slower (with fast charging on). Not only that, but, for some reason, the original wall adapter stopped working twice now. The first time it freaked me out because I thought my phone was messed up, but it turned out that everything was working except the adapter. Then later, I found out that if I reboot my phone with the adapter plugged into the wall, the charger will magically start working again! This worked for one or two charges. Today, I found that my phone was, again, charging extremely slow. Not only that, but my phone stopped charging after around 50% and the adapter is broken once more. I've tried the reboot thing three times and it didn't work again T: So now I'm kind of worried my phone might be defective?
Has this happened to anyone else with charging issues?

JippleStar said:
I used to get those insanely fast charge times; however, recently my phone has been charging slower (with fast charging on). Not only that, but, for some reason, the original wall adapter stopped working twice now. The first time it freaked me out because I thought my phone was messed up, but it turned out that everything was working except the adapter. Then later, I found out that if I reboot my phone with the adapter plugged into the wall, the charger will magically start working again! This worked for one or two charges. Today, I found that my phone was, again, charging extremely slow. Not only that, but my phone stopped charging after around 50% and the adapter is broken once more. I've tried the reboot thing three times and it didn't work again T: So now I'm kind of worried my phone might be defective?
Has this happened to anyone else with charging issues?
Click to expand...
Click to collapse
I haven't ran into anything like that yet. Who is your carrier? Maybe you can take in your charger and battery to get it replaced? Can you try charging with a different quick charging phone or something to narrow down if it's the phone or charger's fault?

burntrat said:
I haven't ran into anything like that yet. Who is your carrier? Maybe you can take in your charger and battery to get it replaced? Can you try charging with a different quick charging phone or something to narrow down if it's the phone or charger's fault?
Click to expand...
Click to collapse
Although I am fairly certain that my issue was the wall adapter portion of the charger, I just found it strange that the fast charging function failed to work properly around the same time when my wall adapter started to fail. Hopefully I am right and nothing else was wrong, but I thought that I would say something in-case I was wrong
As for getting it replaced... I bought my Verizon Note 4 at BestBuy off-contract and when I went there, they claimed to not have any in stock. They never really bothered to ask if I wanted to replace it even though I brought all my receipts and junk so I just took that as I wouldn't be getting a replacement haha :crying:
If anything I'll probably end up just buying another fast charger from samsung later, but for now slow charging is fine I guess. The fast charging did make both my device and charger hot, so maybe that was the problem?
edit:
I do not have any other quick charging devices (to my knowledge), but the wall adapter - combined with various other cables - continued to fail with my other phones as well.

I also say about a hour for a full change

mrgigabyte2002 said:
I also say about a hour for a full change
Click to expand...
Click to collapse
Weird, I need like 1.5 hrs to get from 15% to full on fast charge and about 1.75 hrs for 15% to full on slow charge.

i timed my 1st charge. 57 min from 0 to 100. phone turned on and screen off.

Yep, to me that's the best feature. No more battery switching.
I even bought the Verizon vehicle charger with fast charge, and it works just as quick

big70tom said:
Yep, to me that's the best feature. No more battery switching.
I even bought the Verizon vehicle charger with fast charge, and it works just as quick
Click to expand...
Click to collapse
Do you know if it's safe to use fast charge for every charge up? If it shortens battery life over time, I'd like to know this now and only use fast charge sparingly.

Yes. It shortens battery life. By using the only charger they give you, you essentially cut your battery life in half. It's a conspiracy by Samsung and the makers of the materials used the batteries

big70tom said:
Yes. It shortens battery life. By using the only charger they give you, you essentially cut your battery life in half. It's a conspiracy by Samsung and the makers of the materials used the batteries
Click to expand...
Click to collapse
Whoa..it cuts it down that much? Where did you read about this?

burntrat said:
Whoa..it cuts it down that much? Where did you read about this?
Click to expand...
Click to collapse
Pretty sure that was sarcasm. I'm less sure about your comment, though. ;P

I read it in American Android, first December issue. They did a study. Only way to avoid the battery dissipation was if you only used the fast charger at night, and Sundays after noon, but before 1pm PST. fascinating article. It's amazing what a group of students at Yale who love Android can actually accomplish.

I think I can work around that charging schedule. I am also going to subscribe to that magazine now.

Very slow charging

Anyone else notice that with the supplied charger charging ins't what it should be. My iPhone 5 charged almost twice as fast as this phone. I find it kind of annoying. I did order one of these chargers hoping that solves the issue.
http://www.amazon.com/gp/product/B00HPTU00E/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1

The supplied charger is charging rapidly no doubt.
I guess not less than 1% per minute - particularly when below 70%..

jauhien said:
The supplied charger is charging rapidly no doubt.
I guess not less than 1% per minute - particularly when below 70%..
Click to expand...
Click to collapse
No its not. Especially when your using the phone and its on 5% plugged in. Takes forever to reach 6%.

I'm having literally no issues with charging from dead to 25% in about 15 minutes. 2 hours to 100% im very happy with the speed of charging and this is using my m8 charger as the m9 one is still sealed in box.
Sent from my D5803 using XDA Premium HD app

MattMJB0188 said:
No its not. Especially when your using the phone and its on 5% plugged in. Takes forever to reach 6%.
Click to expand...
Click to collapse
I went with this one and it working like a champ, 30% to 100% in 50 min
https://www.amazon.com/gp/product/B00QTJZ3D0/ref=od_aui_detailpages00?ie=UTF8&psc=1

I've been using the GS4 charger, with a high output cable. The Samsung charger is 1.5A where the HTC m8/m9 charger is 1.0A

the supplied charger is definitely giving 1.5 amps to mine. charges up pretty quick. with a quickcharge 2.0 charger it's crazy fast to charge.
One thing to note is it will take a faster charge the lower the battery level is, which means more heat. if you're also gaming with it, you could be bumping against the battery charging cutoff temperature. I only ever saw this happen on my Tegra HOX+. IIRC HTC has the notification LED blink in alternating green and orange/red when this happens. I'm guessing you would have mentioned temperature in the OP if this was the case, but I figured I'd bring it up.

gonzo237 said:
The Samsung charger is 1.5A where the HTC m8/m9 charger is 1.0A
Click to expand...
Click to collapse
Just spread your arm, pick whether HTC M8 or M9 charger, and read upon it.. 8)
Both M8 and M9 chargers are - 1.5 Ampere.. furthermore both handhelds are charging fast - otherwise if the cable is a problem..

jauhien said:
Just spread your arm, pick whether HTC M8 or M9 charger, and read upon it.. 8)
Both M8 and M9 chargers are - 1.5 Ampere..
Click to expand...
Click to collapse
Sorry, meant it was 1.5a for HTC and 2.0a for the Samsung one. Didn't have them on hand to check.

iPhone 5 battery is 1,440 mAh... M9 battery is 2,840 mAh. 50% charge of Iphone battery doesn't equal 50% charge of M9 battery, in terms of charge time.
I believe the rate of charging to decrease while you use it to prevent the phone from overheating. (My M8 does this as well)
My stock charger is fast, and my quick charge 2.0 is crazy fast.

MattMJB0188 said:
No its not. Especially when your using the phone and its on 5% plugged in. Takes forever to reach 6%.
Click to expand...
Click to collapse
If you are using your phone and charging at the same time, it will take longer to charge....

as someone who had a nexus 6 with turbo charging. this is bad. charging is so slow.

joetang97 said:
If you are using your phone and charging at the same time, it will take longer to charge....
Click to expand...
Click to collapse
I got a qualcomm 2.0 charger and now its super fast.

MattMJB0188 said:
I got a qualcomm 2.0 charger and now its super fast.
Click to expand...
Click to collapse
Yeah, this. I got an HTC Rapid Charger 2.0 for it just to be sure since I knew with certainty it's Quick Charge 2.0. In retrospect perhaps not the best move considering I'm essentially incentivising HTC for not including one in the box from the get go, but whatever.

MattMJB0188 said:
No its not. Especially when your using the phone and its on 5% plugged in. Takes forever to reach 6%.
Click to expand...
Click to collapse
Yup i got the same issue gonna take me 6-11hrs to charge and its very slow charging

I had a similar problem to OP. The second night I had my phone I plugged it in at 11 pm with about 5% battery left and went to bed. At 5:15 the next morning (6 hours later) it was only at 85%. I can't tell if there's still a problem or I just think there is because I'm paranoid about it now. I haven't run my battery down that low since, and looking at the charge current with Ampere seems somewhat inconclusive. I may have to run it down and then keep an eye on it while charging to see what's going on.

Something IS wrong with SOME M9 phones (I think)
I have one of the "bad" ones. Mine takes hours and hours to charge, whether on the cable and plug that came in the box, or on any others that I have around - some I know are 2 Amps. I think there is something seriously wrong with some of these phones, based on what I am reading in this thread, and on my own example. I have had my M9 for just a few days.

I'd like to post a follow up to this thread after having the phone for a couple of weeks now.
I've had several occurrences where my phone didn't fully charge overnight. The worst was a few days ago, I plugged it in at 5% and the next morning (6-8 hours) it was at 1%, it actually lost charge. I noticed before unplugging it so I looked at the history in Battery Widget Reborn and it showed the battery level just slowly dropped from 5% to 1% without any jumps or dips. The battery icon at the top of the screen showed it was charging but it died at that point so I didn't get a chance to open Ampere.
I think it's the charger (and/or the cable) that came with the phone. I've tried several other chargers that have all worked reliably:
- The QuickCharge 2.0 charger that came with my wife's S6 charges my phone really fast.
- I have a Kmashi external battery that also seems to charge it relatively quickly.
- Two older chargers that are several years old (both rated 5 volts at 0.7 amps) charge it from around 30% to full in 3-5 hours.
At first I thought it might have been a wakelock problem, but the battery has been dropping so slowly when the phone is just sitting in my pocket that I'm confident now that it's not wakelocks. I don't know if HTC is likely to send a replacement, but I'm going to stop into the Verizon store that I got the phone from to see if they'll replace it.
Gilligan

My phone is also odd when charging.
Half of the time it takes 6 hours or more to charge. If I look at GSAM battery monitor it shows a charge current of around 350mA. If I then unplug the charger and reconnect after 15 seconds I get over 1300mA charging current, most of the time. (It takes GSAM a while to show an accurate reading). Occasionally it will take a few tries to get it right. Once I get a good reading over 1300mA the phone will charge in 1.5 hours like it should.
Something very buggy about this phone's charging circuit. I get the same behaviour with all chargers and cables, even my battery bank.

MattMJB0188 said:
Anyone else notice that with the supplied charger charging ins't what it should be. My iPhone 5 charged almost twice as fast as this phone. I find it kind of annoying. I did order one of these chargers hoping that solves the issue.
http://www.amazon.com/gp/product/B00HPTU00E/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1
Click to expand...
Click to collapse
I use a 2A tablet charger from my hp touchpad. Charges from dead to 100% in 45 minutes.

Slow Charging Issues

For the past few days, I've noticed very slow charging on my Pixel even if it says "Charging Rapidly". However it would say it will take around 3 hours to fully charge. When fast charging works, usually clocks at 1 hour and 30 minutes.
I really don't know what can be causing the issue. It's the original charger, and cable. Normally removing the cable and putting it again would fix the issue but it's becoming a common thing for it to take 3 hours.
I remember a similar issue on my Nexus 9 and cleaning the cache would completely fix the issue, but the Pixel XL is missing the Wipe Cache option in the recovery.
Any similar experiences?

On the OEM included charger?

Nitemare3219 said:
On the OEM included charger?
Click to expand...
Click to collapse
Yup.

Could try a factory reset.. probably the only software related solution. I can't remember, but Chainfire may have said that the cache.img was one of the things that got removed in 7.1 so I don't even know if you could wipe it if you wanted to. You could also hit up Google support... maybe they'll send you a new charger to try. Make sure you're using the OEM cable too, at least for now, until you figure it out.

I had this exact issue with mine, factory reset / charging in safe mode didn't work.
Turned out to be a faulty usb cable but Google insisted on replacing the entire package (handset etc) Replacement works fine

FSOP said:
I had this exact issue with mine, factory reset / charging in safe mode didn't work.
Turned out to be a faulty usb cable but Google insisted on replacing the entire package (handset etc) Replacement works fine
Click to expand...
Click to collapse
Well, thanks for the heads up! What sucks though is that it's type C to type C, I have some Type C to regular USB, I guess I'd have to buy one.

elfrisi said:
Well, thanks for the heads up! What sucks though is that it's type C to type C, I have some Type C to regular USB, I guess I'd have to buy one.
Click to expand...
Click to collapse
If it makes you feel any better, Google exchange process is amazing.
Raised the return on mine about 4pm and the replacement was on my desk 9am the next morning, they also give you 14 days to send your old one back so you're it without a phone.

I use ampere to see what the charging rate is and I don't feel like the fast charge is that fast.... My 6p charged at a faster rate and my pixel charges at a faster rate using my Choetech smart charger. I'm going to have to drain the battery and see how long it takes to fully charge with the stock charger

Smallsmx3 said:
I use ampere to see what the charging rate is and I don't feel like the fast charge is that fast.... My 6p charged at a faster rate and my pixel charges at a faster rate using my Choetech smart charger. I'm going to have to drain the battery and see how long it takes to fully charge with the stock charger
Click to expand...
Click to collapse
When I checked mine it was charging at something like 2600-2800 but i only watched it for a few minutes, might have gone higher

FSOP said:
If it makes you feel any better, Google exchange process is amazing.
Raised the return on mine about 4pm and the replacement was on my desk 9am the next morning, they also give you 14 days to send your old one back so you're it without a phone.
Click to expand...
Click to collapse
Yeah but they will most likely put a $769 hold on my card... :S

Some phones ie lg v10 do not "fast charge" while screen is on (while youre looking at it) to avoid overheating. Ampere cant show max charging rate. I use a usb sleeve (usb doctor) that displays that info or turn on notification display
EDIT: Supposedly Pixel do not fast charge while in use either.

clockcycle said:
Some phones ie lg v10 do not "fast charge" while screen is on (while youre looking at it) to avoid overheating. Ampere cant show max charging rate. I use a usb sleeve (usb doctor) that displays that info or turn on notification display
EDIT: Supposedly Pixel do not fast charge while in use either.
Click to expand...
Click to collapse
I think I can confirm this. Last night mine showed 27 minutes to charge from about 50% but after keeping the screen awake for about 30 seconds, it went up to 51 minutes.

I also find my Pixel charges very slow as well even though it says Charging Rapidly (OEM charger, cable). The GSM Arena review said they went from 0% to 46% in 30 minutes, I get more like half of that at most. I used Ampere and it said i was only charging at 710 mA.....

trace1er said:
I also find my Pixel charges very slow as well even though it says Charging Rapidly (OEM charger, cable). The GSM Arena review said they went from 0% to 46% in 30 minutes, I get more like half of that at most. I used Ampere and it said i was only charging at 710 mA.....
Click to expand...
Click to collapse
If you charge it from almost empty it charges very quick, but slows down once it gets nearer to full

FSOP said:
If you charge it from almost empty it charges very quick, but slows down once it gets nearer to full
Click to expand...
Click to collapse
Yes i started charging my phone when it was 4%, and when i looked at it about 20 minutes later it was only at 16%. I think it took about 3 hours to fully charge. The only modification I've made to the phone is unlock the Verizon bootloader and flash the P software (which was subsequently updated to V). I'm seriously wondering if the charger or cable is defective.

trace1er said:
Yes i started charging my phone when it was 4%, and when i looked at it about 20 minutes later it was only at 16%. I think it took about 3 hours to fully charge. The only modification I've made to the phone is unlock the Verizon bootloader and flash the P software (which was subsequently updated to V). I'm seriously wondering if the charger or cable is defective.
Click to expand...
Click to collapse
Potentially, mine was and I had to get the whole thing replaced

Slow Charging Speed | Super fast charging not working

My S20+ exynos is charging slowly. Its taking around 1 hr 40 min - 2 hr to charge from 5 to 100. Super fast charging is turned on and when i plug in it states 1 hr 10 min to charge. This seems to be happening from last 4-5 charge cycles. Phone is on latest software(ATCT). Any ideas what to do.

For me it takes 1h5m mostly (15%-100%)
Maybe do you have bad USB cable?
Tapatalk - SM-G986B

If you are using a cable other than what came with the phone, that is usually the culprit.

0kti said:
For me it takes 1h5m mostly (15%-100%)
Maybe do you have bad USB cable?
Tapatalk - SM-G986B
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How do i check the cable is faulty ? I tried a cable from my prev phone (Nexus 6P) it wasn't any different .
shollywood said:
If you are using a cable other than what came with the phone, that is usually the culprit.
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nope. Cable is the same that came with the phone

sjandroiddeveloper said:
My S20+ exynos is charging slowly. Its taking around 1 hr 40 min - 2 hr to charge from 5 to 100. Super fast charging is turned on and when i plug in it states 1 hr 10 min to charge. This seems to be happening from last 4-5 charge cycles. Phone is on latest software(ATCT). Any ideas what to do.
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Bro I am facing the exact same issue on my galaxy S20 exynos. I think it is due to the April update installed, as I saw many comments regarding S20 ultras slow charging speed after the update. Anyways please let me know if you find a solution.

vanditsadaphale said:
Bro I am facing the exact same issue on my galaxy S20 exynos. I think it is due to the April update installed, as I saw many comments regarding S20 ultras slow charging speed after the update. Anyways please let me know if you find a solution.
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This might explain something... apparently ATCT was pulled
https://www.neowin.net/news/samsung-pulls-latest-galaxy-s20-ultra-update-following-user-complaints

heslo.rb26 said:
This might explain something... apparently ATCT was pulled
https://www.neowin.net/news/samsung-pulls-latest-galaxy-s20-ultra-update-following-user-complaints
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Pulled? Mine's just downloaded it this morning!
Think i'll postpone the update for the time being then

jonboi said:
Pulled? Mine's just downloaded it this morning!
Think i'll postpone the update for the time being then
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Maybe it's only recent or in certain regions? Either way it's clear it has some issues. I've noticed charging issues on ATCT myself

Funny... I've been thinking about *not* using the Samsung 25W charger that came with the phone and use an older sub-10W charger based on the idea that pumping huge current into the battery quickly prematurely shortens its life.
Plenty of articles talk about this.
The cynic in me thinks that manufacturers are pushing the convenience of warp/super/ultra/whatever fast charging knowing full well that users will F**K up their batteries at ever faster rates than before, thus creating a growing captive market for their latest mega-fast charging phones.
All my previous devices had replaceable batteries so I was less concerned with longevity, but having shelled out a not modest sum for the S20 (all my previous phones were superseded eBay items) I really want to get the longest life possible out of it.
I've got it plugged into an HP 1.5A USB charger and Accubattery thinks it should get from 35% to my target 80% in 1h16min, which I think is acceptable. I bought the fast travel charger and fast car charger at the same time, so I'll reserve these for "emergency" recharging and not use them by default.
Anyone else with similar thoughts?

It could be the April update. Mine says "Super fast charging" while I'm plugged into my 25W brick, BUT it only says "Cable charging" if I charge it through my laptop (USB-C) while previously it said "Fast charging". Has anybody experienced the same?

sjandroiddeveloper said:
My S20+ exynos is charging slowly. Its taking around 1 hr 40 min - 2 hr to charge from 5 to 100. Super fast charging is turned on and when i plug in it states 1 hr 10 min to charge. This seems to be happening from last 4-5 charge cycles. Phone is on latest software(ATCT). Any ideas what to do.
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Bro I just found a solution. Not the best but it works. My phone heated like hell even when idle and of course while charging too which resulted in slow charging speed, so what I did is wrap a cold cotton cloth around it while charging to keep it cool, and boom 50% charged in 30 mins. Earlier it took 1 hour for 50% charge.
For the cold cloth, I wet a handkerchief and squeezed the water out, thus ensuring there is no water to deal any damage (although the phone is ip68 rated).
Of course this is not a permanent solution but it works.
Hope it helps :good:
---------- Post added at 06:33 AM ---------- Previous post was at 05:52 AM ----------
sjandroiddeveloper said:
My S20+ exynos is charging slowly. Its taking around 1 hr 40 min - 2 hr to charge from 5 to 100. Super fast charging is turned on and when i plug in it states 1 hr 10 min to charge. This seems to be happening from last 4-5 charge cycles. Phone is on latest software(ATCT). Any ideas what to do.
Click to expand...
Click to collapse
Bro I just found a solution. Not the best but it works. My phone heated like hell even when idle and of course while charging too which resulted in slow charging speed, so what I did is wrap a cold cotton cloth around it while charging to keep it cool, and boom 50% charged in 30 mins. Earlier it took 1 hour for 50% charge.
For the cold cloth, I wet a handkerchief and squeezed the water out, thus ensuring there is no water to deal any damage (although the phone is ip68 rated).
Of course this is not a permanent solution but it works.
Hope it helps :good:

I have the same problem and as pointed out by vanditsadaphale it is related with the temperature of the phone. Mine charges 30% in 30 minutes instead of 50% as advertised and always is > 35.0 degrees Celsius. Also a **** of battery life with screen on time at 5hrs after almost a day of use with 60 hz...

I have the same problem with my S20 snapdragon version ....
Before update:
Super charge and fast charge were fine with same cable and same charger (aftermarket one support 22watt charging)
After update:
With everything in BATTERY SETTING got ticked. It only charges at slowest speed.
Plugged into supercharging port - no response, no charging
Plugged into QC3.0 port - slow charging

sjandroiddeveloper said:
My S20+ exynos is charging slowly. Its taking around 1 hr 40 min - 2 hr to charge from 5 to 100. Super fast charging is turned on and when i plug in it states 1 hr 10 min to charge. This seems to be happening from last 4-5 charge cycles. Phone is on latest software(ATCT). Any ideas what to do.
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i have the same problem with S20 ultra
im using 25w charging
but not work fast
i just got notificating
cable chargine 1 h
i hope samsung fix this problem