Is my fast charging/wireless fast charging working? - Samsung Galaxy S8 Questions and Answers

Hi recently bought the phone and I notice my fast charging may not be working even though the feature is enabled. It takes about 40 mins to fast charge using cable from 75% to 100% and almost 3 hours from 15 to 100%. I am using all the Samsung provided charges and cable. Please help.

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BATTERY LIFE: Charging Speed

To power up, you consume Red Bull. But your phone just needs its adaptive fast charger. Rate this thread to express how quickly the Note5 can charge. A higher rating indicates that it charges extremely fast.
Then, drop a comment if you have anything to add!
Phone isint charging past 1000 mA on stock cable. However using one from PS4 is giving full 1800-2000 mA! Did I get a faulty cable by any chance ? N920C
This is the fastest charging phone ever! During the days where I use the phone heavily, it will drop to about 15-20% around 4 PM, my day starts at 5 AM. That's when I unplug my phone also. So great battery life for me. It will charge from 10% to 100% in about 1 hr or just slightly more. Can't complain about it, it a great feature.
lol just plug my phone in, went to starbucks come back at 80% from 39% in around 30-40 min
I got the phone down to 1% and it took 1 hour 36 mins to charge to 100%
Sent from my SM-N920I using Tapatalk
Driving me crazy
i have to try at least 5-7 times to get it into fast charging mod
otherwise it will keep charge normaly
Mohammed-noor said:
i have to try at least 5-7 times to get it into fast charging mod
otherwise it will keep charge normaly
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Just switch the cable, had that problem.
The cable that i got with the phone is garbage, any other one will do the trick.
Charges as fast or faster than my S6 did, which is awesome since the battery is bigger. IF I use it heavily throughout the day and get it below 50% I'll throw it on the fast charger (wired) while doing dishes or something and I get almost 2%/min. 10 minutes will get me almost 20% more battery and I'm golden for the rest of the day with heavy use (CoC attacks all night lol)
vakenT said:
Just switch the cable, had that problem.
The cable that i got with the phone is garbage, any other one will do the trick.
Click to expand...
Click to collapse
same thing,thanks any way
1h 10min or 1h 20mins fully charged everytime.
Wireless Fast Charger
Got 2 wireless chargers. 1 from Costco when i got the note 5 and the other when i activated samsung pay. Sold them both for 20 each and bought the fast charger. Less sensitive when looking for that "sweet spot" and seems to charge just as fast as factory cable. About an hour and twenty minutes to charge fully. Battery lasts pretty good on stock even before using package disabler pro.
A little over an hour here for me for a full charge.
charging speed is very fast. from 20% in just few minutes charged goes up to 50%. from drained battery to full charge takes about 1 hour and 20 mins. looking for suggestions for good power bank with wireless charging capability for this phone.
awesome speed
Deep sleep issue
1 hour 13 min
jhylez said:
charging speed is very fast. from 20% in just few minutes charged goes up to 50%. from drained battery to full charge takes about 1 hour and 20 mins. looking for suggestions for good power bank with wireless charging capability for this phone.
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Click to collapse
The Pleson wireless fast charge that I bought on Amazon for 18 dollars charges my phone in a little less than 75 minutes from 5% to 100%.. The phone does get a little hot though.
You guys talk about charging time while Fast Charge features enabled.
How about normal charge ?
I was disabled fast charge feature and tried to plug my phone to my charge. It took me more than 4 hours to fully charged from 15% of battery.
why waste time with regular charging when it takes 1hr 11 min to 100% from 15%....charging with phone off.
if you charge while on the phone is on & continually updating social media, email, stocks/bonds/financial, it'll take a long time, if you ever see 100%.
I don't fully deplete my battery anymore, since it's not replaceable. When I had the note 3 with another spare battery and usb 3.0 wire charger I got it down it like 10% than charge. Life is a little different on the note 5. I have to charge my phone while at work, at least once a day sometimes 2 times if I'm heavily using my phone. Just the combination of bad 3g service here at work and Really good 4G LTE service, in certain areas, brings my battery performance down. But no problem, I have fast wired charger, from 20% to 100% in about 1 hour and 10 mins while the phone is on and even faster with the phone off. At home, I have fast wireless charger which I use, right before I sleep when I don't need a fast charge. A little slower than the fast wired charger, but 20% to 100% in 1 hour and 30 mins. I also have a non fast wireless charger but it's sort of useless. It only works will with my brother's s6 and now his s7.

Disable Fast Charge slows the time dramatically

Anyone disabled fast charging? Tried it and it is super slow. When slow charging + using the phone, the battery % will drop instead. Tried fast charging, it's an hour or so from 20%. Problem lies in the slow charging.
P/S: I am using the Ori Charger from box and also from my previous S6E. Both are the same model charger.
- JaY - said:
Anyone disabled fast charging? Tried it and it is super slow. When slow charging + using the phone, the battery % will drop instead. Tried fast charging, it's an hour or so from 20%. Problem lies in the slow charging.
P/S: I am using the Ori Charger from box and also from my previous S6E. Both are the same model charger.
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Click to collapse
Battery don't know why, but even if I disable fast charges it only takes aboutw 1hour 45 minutes from 18%.
[email protected] said:
Battery don't know why, but even if I disable fast charges it only takes aboutw 1hour 45 minutes from 18%.
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Click to collapse
Right after your post, the only thing I haven't changed was the cable. My intial try was:
Try 1: Old S6E Fast Charger + S6E Cable
Try 2: New S7E Fast Charger + S6E Cable
Try 3: Old S6E Fast Charger + S7E Cable
It states Cable Charging when I changed to S7E cable and thank god it matches your description, approximately 1 hour +. I wonder the S6E Cable starts breaking down since previously it's always on Fast Charging, but when I turned on Fast Charging, there's no issue!

Galaxy S7 Edge Fast charging too slow

Hi everyone,
I have a galaxy s7 edge and i think that i have a problem with the fast charging feature, but i am not sure so i wanted to ask here.
As i know the phone supports fast charge 2.0 which should charge from 0-60% in 30 minutes. The phone charges fast, and it says that it uses fast charge, but it is just half the speed, normaly it charges 1% per minute, so that means it takes 60 minutes for 60%. Is that normal or should it charge faster, and if it should charge faster, what could be the issue, i am ussing the original charger which came with the phone.
I wondered that also. It takes close to 1 1/2 hours for be to charge. 0-60 never gets done in 30 minutes for me.
Do you keep turning on the screen to check progress? Quick Charge doesn't work while the screen is on.
meyerweb said:
Do you keep turning on the screen to check progress? Quick Charge doesn't work while the screen is on.
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Click to collapse
Hello,
No, it does not matter, even if i do not touch the phone while it is charging it never gets the speed as it is advertised, only half of the speed. Does the always on matter in this point, because i have it enabled?
I think the 3600 mAh battery has something to do with it. It's a big battery. Those stats are likely for a smaller capacity battery.
Sent from my SM-G935T using Tapatalk
Those stats are for when the phone is turned off and you put it on charge...
How long does it take you to charge from 0-100 without touching the phone? It should take around 1.5 hours.
arnes_king said:
Hello,
Does the always on matter in this point, because i have it enabled?
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That's a good question. I don't know. Turn it off next time you charge and see if it makes a difference.
My note 5 used to charge from 2-100 in 70 minutes. The s7 edge takes 30 minutes more for me. Guessing it's the battery. Also, if you're using the phone and fast charging is on, it'll charge slower than if you were to turn off fast charging. Meaning, if you're using your phone and charging it, better off turning off fast charging since the regular charging will charge it faster while using the phone
Sent from my SM-G935F using Tapatalk
Hi.
I one (only once) noticed that my S7E didn't charge well even though plugged in to original charger and cable. Somehow the cable wasn't connected tight on the charger side. This was causing the problem of showing fast charging on the display but slow charging actually.
Atm I'm charging and monitored the progress:
start charging at 1 %
10 min 15 %
20 min 27 %
30 min 37 %
41 Min 50 %
1h 8 min 80 %
1h 40 min 100 %
Fast charger works fine with charger you get phone. Fast wireless charger doesn't work as fast for me. If you leave the phone alone, honestly it does charge fast
maroc84 said:
Hi.
I one (only once) noticed that my S7E didn't charge well even though plugged in to original charger and cable. Somehow the cable wasn't connected tight on the charger side. This was causing the problem of showing fast charging on the display but slow charging actually.
Atm I'm charging and monitored the progress:
start charging at 1 %
10 min 15 %
20 min 27 %
30 min 37 %
41 Min 50 %
1h 8 min 80 %
1h 40 min 100 %
Click to expand...
Click to collapse
My phone charges in about the same time, even i have fast charge disabled.
Sent from my SM-G935F using XDA-Developers mobile app
[email protected] said:
My phone charges in about the same time, even i have fast charge disabled.
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Even if you disable fast charging?
This shouldn't be the case. When I disable fast charging it shows a couple of hours remaining till fully charged, don't know exactly how much.
Sent from my Samsung Galaxy S7 Edge using XDA Labs
maroc84 said:
Even if you disable fast charging?
This shouldn't be the case. When I disable fast charging it shows a couple of hours remaining till fully charged, don't know exactly how much.
Sent from my Samsung Galaxy S7 Edge using XDA Labs
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Click to collapse
With disabled fast chargeing starting from 22% estimate 1 hour 35 minutes
With fast charging enabled 1hour 21 minutes.
Sent from my SM-G935F using XDA-Developers mobile app
[email protected] said:
With disabled fast chargeing starting from 22% estimate 1 hour 35 minutes
With fast charging enabled 1hour 21 minutes.
Sent from my SM-G935F using XDA-Developers mobile app
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Click to collapse
That was about the same as mine last night when I started charging around 22%. Strange how there isn't much difference in the timings.
maroc84 said:
Hi.
I one (only once) noticed that my S7E didn't charge well even though plugged in to original charger and cable. Somehow the cable wasn't connected tight on the charger side. This was causing the problem of showing fast charging on the display but slow charging actually.
Atm I'm charging and monitored the progress:
start charging at 1 %
10 min 15 %
20 min 27 %
30 min 37 %
41 Min 50 %
1h 8 min 80 %
1h 40 min 100 %
Click to expand...
Click to collapse
Also same in my case.
Tried mine yesterday and took about 1 hour, 35 mins from 0 to 100%
My s7 edge (though using s6 active fast charger), showed 42% at start of fast charge.. after 30 minutes it had only gone to 51% or about 9% gain.. not normal.. i tried the same test with an s6 active and it gained about 15% or more in 15 minutes (not 30).
Still trying to rule out the charger, but i noticed this same slowness last nite on the native s7 edge charger.. so i dont think its the charger..
edit: after wiping system partition cache.. 16 minute test i jumped 8% .. i guess this is more normalish though still a tad low.
I would like to verify the same as some users explained.
Fast charge does charge quick in my phone, maybe not as quick as expected.
But i normally leave fast charge disabled, heavy user and dislike picking the device in when its warm.
I was about to pop out, device had like 5-10% battery.
Plugged it in and it said 2 hours to charge.
Unplugged, Enabled fast charge, time went to 1 hour 25 minutes.
So it chopped around 30 minutes off the charging time.
hi, I don't know if this's the place, but I am on stock firmware for s7 (g930f) and it charges really slow (like 4 hours to full charge), does anybody know why? (original charger)

S7 Edge standard charging time (fast charge turned off)

Mine took approx 7 hours to complete a charge. Is this normal?
After few months of using this phone, i recently tried turning off fast charge, just because. However i was shocked to see it charges way too slow.
The fast charging works fine, however. Around 1h 30mins or so. I use the stock charger that came with the phone.
Would like to hear how long yours took to fully charge, and whether i should be worried?
P/s. this is my first post here. I've searched with multiple keywords but no results of the standard charging time, so if there's an answered thread, please drop the link.
Thanks in advance,
Dan
dandraper said:
Mine took approx 7 hours to complete a charge. Is this normal?
After few months of using this phone, i recently tried turning off fast charge, just because. However i was shocked to see it charges way too slow.
The fast charging works fine, however. Around 1h 30mins or so. I use the stock charger that came with the phone.
Would like to hear how long yours took to fully charge, and whether i should be worried?
P/s. this is my first post here. I've searched with multiple keywords but no results of the standard charging time, so if there's an answered thread, please drop the link.
Thanks in advance,
Dan
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Click to collapse
This is also the same here. What wonders me if why can a cheap (7$) car charger which is 2.1A charge the phone 3-4 times faster than the original charger (both without fast charging)?
dandraper said:
Mine took approx 7 hours to complete a charge. Is this normal?
After few months of using this phone, i recently tried turning off fast charge, just because. However i was shocked to see it charges way too slow.
The fast charging works fine, however. Around 1h 30mins or so. I use the stock charger that came with the phone.
Would like to hear how long yours took to fully charge, and whether i should be worried?
P/s. this is my first post here. I've searched with multiple keywords but no results of the standard charging time, so if there's an answered thread, please drop the link.
Thanks in advance,
Dan
Click to expand...
Click to collapse
There are 3 charging times:
- 1.5h with Quick Charge enabled
- 2h with a good USB 2A cable and stock charger (I am using the Amazon Kindle Fire 2A cable and the stock charger and I get 2h time with Quick Charge disabled)
- 7h with poor quality cables and/or less than 2A chargers.
Cst79 said:
There are 3 charging times:
- 1.5h with Quick Charge enabled
- 2h with a good USB 2A cable and stock charger (I am using the Amazon Kindle Fire 2A cable and the stock charger and I get 2h time with Quick Charge disabled)
- 7h with poor quality cables and/or less than 2A chargers.
Click to expand...
Click to collapse
Same here
dandraper said:
Mine took approx 7 hours to complete a charge. Is this normal?
After few months of using this phone, i recently tried turning off fast charge, just because. However i was shocked to see it charges way too slow.
The fast charging works fine, however. Around 1h 30mins or so. I use the stock charger that came with the phone.
Would like to hear how long yours took to fully charge, and whether i should be worried?
P/s. this is my first post here. I've searched with multiple keywords but no results of the standard charging time, so if there's an answered thread, please drop the link.
Thanks in advance,
Dan
Click to expand...
Click to collapse
7 hours? That's ridiculous. My S7 edge charges in 2 hours without fast charging. Never used fast charging, so don't know how much time that takes.
Most probably there's a fault in your cable. Take it to Samsung Service center and get it replaced.

M3 charging time question

Hi guys. I got my own M3 device and have quite long time for charging from 1% to 100%. - 3 h 55 min (~3 h to 95% and 50 min from 95 to 100%). Are you have the same and this is a payment for a long battery life, or maybe it should be quicker? Tell me please about your experience.
You must have a problem with your charging plug, or maybe your using another charger that didn't come with your device. I only see slow charging time when I don't use the charging cable and plug that came with the device.
Hanger4life said:
You must have a problem with your charging plug, or maybe your using another charger that didn't come with your device. I only see slow charging time when I don't use the charging cable and plug that came with the device.
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Usung everything brand new from the device box. So, such time is abnormal? Can anyone confirm?
UPD: But you gave me an idea. Connected it to XIAOMI's Quick Charge and time decreased to less than 3 hours.

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