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Can the phone tell the different between a charger and a computer?

I just find it stupid that the phone would show a notification for USB connection when I connect it to a charger.

Yes, it can tell the difference. Check in OS monitor, it knows whether you are getting power from USB, or from AC.

My phone thinks my car is a computer. As far as I know, it goes by the current being received -- 500 mA from a computer, 700 mA from the stock wall charger.
Sent from my SAMSUNG-SGH-I897 using XDA App

I don't think it depends on the current.
With my factory charger, if I insert the charger in and kinda pull out one side of it, it will think it's a computer and I can "mount" my sd card. so it might be a certain way the connectors touch inside

saint168 said:
I just find it stupid that the phone would show a notification for USB connection when I connect it to a charger.
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It depends on the charger, but yes, the phone for the most part can tell the difference. It has to do with the voltage that is put out.

Ikonomi said:
My phone thinks my car is a computer. As far as I know, it goes by the current being received -- 500 mA from a computer, 700 mA from the stock wall charger.
Sent from my SAMSUNG-SGH-I897 using XDA App
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It has nothing to do with amperage (unless it is under 500) and everything to so with charging source. Wall chargers basically short the data wires to indicate AC charger and car chargers do not.
There is a thread in accessories forum discussing this and mods to get full charging out of car chargers. I did it by modding an extra cable. My car charger puts out 1 amp but the phone never draws more then ~ 750 mah.
Sent from my MB520 using XDA App

Dungeon47 said:
Yes, it can tell the difference. Check in OS monitor, it knows whether you are getting power from USB, or from AC.
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Every time I read one of your posts, in my head is McGyver's voice. Hearing him narrate the xda forums is hilarious.
From a phone

The phone can take up to 1000mA of charging current. But only if it detects it is on one of its supported AC chargers. Draw more than 500mA on a PC USB port may damage it. So, there is special wiring needs to be done for the data PINs on the USB port. That's why for generic car charger and wall chargers, it can't only assume it is PC USB port and charges at a slower pace (500mA). You will need the Samsung AC or Car charger to charge at higher current. I managed to mod one of car charger to be recognized as AC charger (no USB prompt). And you really need it because if you're using the phone as GPS navigation device, 500mA won't be able to sustain it (battery will keep be drained). You need 700ma or more.

It also depends if you have your USB connection set to a default if you will get that pop up when you connect it to any other than an AC charger.

Ikonomi said:
My phone thinks my car is a computer. As far as I know, it goes by the current being received -- 500 mA from a computer, 700 mA from the stock wall charger.
Sent from my SAMSUNG-SGH-I897 using XDA App
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Yes it does and is sensitive. I have been using a BT headphone charger and I would be perplexed that my phone showed 100% but pull the plug and its at 87% every morning AFTER recalibrating the battery.. LOL
Decided to use the Samsung Charger and no such issues. Needs those extra Milliamps.....

How do you charge your phone?

Hey guys,
Been wondering how everyone else charges their phones. I've always used my usb charger and only used the car charger when necessary.
Sent from my SCH-I510 using Tapatalk

Drain till 2 percent charge to 100 unplug turn off charge up to 100 turn on charge and repeat 2 times. Long story short I bump charge
Sent from my SCH-I510 using XDA App

I do the battery calibration from the other thread about once a week. For everyday charging I just charge when low. So far my battery last pretty long.some days longer then others.

I usually just plug it in
Sent from my SCH-I510 using XDA App

Just the usual. Plug it into the standard micro USB the phone came with. Calibrate every time I update my ROM(since Humble comes with a battery calibrate app, makes it very easy).

at home i use the USB charger that came with the Charge. at work i use a micro usb charger that came with a palm pixi or a bluetooth headset that used micro usb to charge. I tried using a microusb cable plugged into my work computer, but that triggers the usb storage mode, which stops my podcast player. I've also noticed some universal usb chargers trigger the USB storage mode.
In the car I have the Charge car dock. I use a mini usb charger for a garmin gps with a mini to micro usb adapter with it. If I plug that directly into the Charge, it triggers the Desktop dock mode, rather than car dock mode.

ace5198 said:
I usually just plug it in
Sent from my SCH-I510 using XDA App
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Bahaha. Here, I use my Galaxy Tab charger. Goes a lot faster because of the higher amperage, plus I don't need to charge my Tab very often.
Sent from my Droid Charge running Humble 1.4

[Q] Can't charge off PC USB?

My Photon Q won't charge off a PC USB port, or my laptop. Is this common? Thanks.

Are you using the usb cable that came with the phone? Reason I ask....I've discovered this phone is extremely picky about the cables you use. So far of the ones I have on hand, I can only consistently charge while in the car using my Belkin usb charging adapter with the Motorola cable that came with the phone. That includes a fairly nice ferrite core 6ft usb cable I got from Monoprice...which it works fine at home on AC, but in the car it stutters back and forth between charging and not charging.

Just today I used a cheap USB cable I bought off of ebay to charge my PQ using my laptop.
Its one of the ones sold as "HTC OEM USB Charger + cable" on ebay for like 3 bucks.
I also charge it at home using a green 3m cable from ebay, also bought for like 3 bucks lol.

Does it require that drivers be installed on the PC to get a charge? I've tried a few cables that I have laying around. I'll see if I can find other cables to try. The weird thing is if the phone is off, and plugged in, the LED lights up green, as if it's charging. But using the same cable, if the phone is on, it won't acknowledge that it is plugged in.

tcrimsonk said:
Does it require that drivers be installed on the PC to get a charge? I've tried a few cables that I have laying around. I'll see if I can find other cables to try. The weird thing is if the phone is off, and plugged in, the LED lights up green, as if it's charging. But using the same cable, if the phone is on, it won't acknowledge that it is plugged in.
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No, I wouldn't think so...
I've been able to charge off of many different USB cables on my Q. Not sure... Only thing it's been picky on so far is the wall wart - cable it hasn't seemed too picky about.

If its an old desktop with USB 1.1 it may not charge, and many laptops won't allow charging via USB if the laptop itself is not plugged into AC. Just a thought.
Sent from my XT897 using xda app-developers app

bryanfritz1 said:
If its an old desktop with USB 1.1 it may not charge, and many laptops won't allow charging via USB if the laptop itself is not plugged into AC. Just a thought.
Sent from my XT897 using xda app-developers app
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Very good point ^^^. I've heard some laptops, even when plugged in, still don't provide enough juice to charge (some) devices. Perhaps your laptop is one of these low-power USB port devices.

ive noticed that this phone is picky about what charger you use. i have a hard time charging on my pc as well. and certain micro usb's i have dont seem to charge it well either. needs to be the stock plug it came with.

I've basically given up at this point. Blackberry AC chargers work well for me, so I'll try and track down a few more of them. Otherwise, nothing is consistent. The desktop I've used has a plenty big enough power supply, and it charges my Epic with no problem. My personal laptop and work laptop both charged the Epic, but not the Photon Q. I guess I'll just have to carry around a charger instead of a MicroUSB cable when I'm on the road with my laptop.
Thanks, all.

tcrimsonk said:
I've basically given up at this point. Blackberry AC chargers work well for me, so I'll try and track down a few more of them. Otherwise, nothing is consistent. The desktop I've used has a plenty big enough power supply, and it charges my Epic with no problem. My personal laptop and work laptop both charged the Epic, but not the Photon Q. I guess I'll just have to carry around a charger instead of a MicroUSB cable when I'm on the road with my laptop.
Thanks, all.
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All,
For what little it's worth, I just noticed that the words "Not Charging" come up on the lock screen whenever I connect to the USB port of my laptop or desktop. So the PQ knows it's plugged in; it just refuses to accept the charge.

Also, whenever the battery completely dies, the phone will start to charge. It will charge for a few minutes until it has enough battery to turn itself on. As soon as it turns on, it stops charging, and a minute later, shuts down because of the dead battery. Then it starts charging again. This basically gives me an endless loop of the phone charging, starting, discharging, and shutting back off. I can't even get it to stay off long enough to get a useful charge without turning on automatically.

Yeah, the only issue I've had with this phone at all is the extreme 'quirkiness' it has in regards to charging on anything other than the stock usb cord & power adapter it plugs into. Even using the Moto vehicle dock for the Q, its completely hit/miss on charging. It will *often* go into that 'Not Charging' state where its kind of keeping sort of a baseline/'stalemate' of the current charge level for me, not really going down but not charging back up either. Not really sure what's up with that. With my vehicle dock for the longest I kept thinking maybe my cig lighter port on my car is bad, but I don't have issues with my radar detector at all.

Had the same problem with the not charging a few days back. I was leaving the phone in Mass Storage mode because just getting it into Mass Storage was a headache originally.
Hooked it up to it's original cable and woke up with 65% battery. Switched from mass storage to charge only and it started charging.
Not sure if it was caused by being in Mass Storage and wouldn't charge but now I put in Charge Only before bed.

It always works (in my experience) with the original cable that comes with it regardless, its anything else where its quirky.

PythonFanTN said:
It always works (in my experience) with the original cable that comes with it regardless, its anything else where its quirky.
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Isn't there a setting in ##3282# that enables and disables USB charging? Y'all have probably thought of this already. Anyways just thought if throw that out there. This is my first android that was not a low usage device. I know very little about it. I seriously think xda should make tee shirts that say "everything I have learned in life I learned from xda".

My phone was not charging in debugging mode yesterday.
Sent from my XT897 using xda premium

Fast Charging?

I'm not sure if I'm being stupid or not, but when I charge my S6 (using the cable that came with it) and the phone is off, I do not get the fast charging symbol/text. However, as soon as my wife plugged hers in to charge it for the 1st time and it was off, it had the fast charging text. Am I doing something wrong? Thanks in advance.

I get the fast charge symbol and it says "fast charging" Not sure what you are doing wrong.

jpolidori11 said:
I'm not sure if I'm being stupid or not, but when I charge my S6 (using the cable that came with it) and the phone is off, I do not get the fast charging symbol/text. However, as soon as my wife plugged hers in to charge it for the 1st time and it was off, it had the fast charging text. Am I doing something wrong? Thanks in advance.
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Just to make sure, you said you were using the cable, are you also using the white 110 adapter that you plug the cable into on the wall side? I always get the fast charging message, both using the equipment supplied with the phone, as well as using a "Qualcomm 2.0" fast charge car cigarette lighter style adapter I bought from Amazon.
Good luck

Can we control when it fast charges vs slow charges? What's the difference (besides the obvious)?

sd0070 said:
Can we control when it fast charges vs slow charges? What's the difference (besides the obvious)?
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Assuming you use the included charger, or another charger with Qualcomm 2.0 Quick Charge capability, it will always take advantage of the technology. None of the wireless charging, as far as I know, is equipped with the fast charge technology, so that will always be at conventional speed.
As an aside, I have plugged my phone into the "quick charger" and then set it on the wireless charging pad, and the pad shows it "charging". I haven't really checked to see if that adds anything to the speed of the charge.

sd0070 said:
Can we control when it fast charges vs slow charges? What's the difference (besides the obvious)?
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I believe there is a setting in the battery stats menu where you can turn off fast charging well it was on my note 4 anyway.

USB "Adaptive Fast Charging" not working?

Hi.
I read about problems with "wireless recharging", but what about the usb one?
I enabled / disabled the fast charge and the difference it's about 20 minutes.
Fast charging (enabled): i.imgur.com/VMFTRtL.jpg
Cable charging (disabled): i.imgur.com/mylrOBo.jpg
I'm using the Samsung charger and cable. "Ampere" shows about 1000ma during recharging, for both.
I can't understand if it's only for my phone, or even worse, it's a "Samsung Feature"

schizzo_ita said:
Hi.
I read about problems with "wireless recharging", but what about the usb one?
I enabled / disabled the fast charge and the difference it's about 20 minutes.
Fast charging (enabled): i.imgur.com/VMFTRtL.jpg
Cable charging (disabled): i.imgur.com/mylrOBo.jpg
I'm using the Samsung charger and cable. "Ampere" shows about 1000ma during recharging, for both.
I can't understand if it's only for my phone, or even worse, it's a "Samsung Feature"
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My first question is where is the option? Because the only option i have on my device (AT&T) is for fast wireless charging. I remember on my old S7 that there was an option for adaptive fast charging but i dont see it here. What i find odd is that i show the same time til charged whether im on my fast charging pad or over USB, and i am using a true USB 3.1 card in my PC. Thats also using either the OEM cable or my Aukey USB C to C cable. I always thought even the fast wireless wasnt supposed to be as fast as cable charging. Also, to me, charging from 30% to full shouldnt take 2 hours and 20 minutes, that doesnt seem too "fast" IMO.

cloudraker said:
My first question is where is the option? Because the only option i have on my device (AT&T) is for fast wireless charging. I remember on my old S7 that there was an option for adaptive fast charging but i dont see it here. What i find odd is that i show the same time til charged whether im on my fast charging pad or over USB, and i am using a true USB 3.1 card in my PC. Thats also using either the OEM cable or my Aukey USB C to C cable. I always thought even the fast wireless wasnt supposed to be as fast as cable charging. Also, to me, charging from 30% to full shouldnt take 2 hours and 20 minutes, that doesnt seem too "fast" IMO.
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To find where options for Fast Wireless and Fast battery charging ,
see screenshot attached
Phone/Device Maintenance/Battery /3 dot menu ( right top )Advance Settings ......

cloudraker said:
My first question is where is the option? Because the only option i have on my device (AT&T) is for fast wireless charging. I remember on my old S7 that there was an option for adaptive fast charging but i dont see it here. What i find odd is that i show the same time til charged whether im on my fast charging pad or over USB, and i am using a true USB 3.1 card in my PC. Thats also using either the OEM cable or my Aukey USB C to C cable. I always thought even the fast wireless wasnt supposed to be as fast as cable charging. Also, to me, charging from 30% to full shouldnt take 2 hours and 20 minutes, that doesnt seem too "fast" IMO.
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Can You do some tests with wireless fast recharging? Just use "Ampere" for see how quickly the battery is charging. Like I said before, on cable is about 1000mA for me.

Yeah 1000mA is as good as it gets I'm afraid, its pretty slow compared to VOOC. I've really struggled getting used to the slow charging coming from a Oneplus 3. That being said the rate of charge appears to be constant even with the screen on, so its not all bad.