Heating issue while charging ?? - Xiaomi Redmi Note 7 Questions & Answers

Anyone facing heating issue while charging with stock charger? Is it only me or anyone else facing the same ?
Temperature goes upto 45°c ..is it normal ?

hk96 said:
Anyone facing heating issue while charging with stock charger? Is it only me or anyone else facing the same ?
Temperature goes upto 45°c ..is it normal ?
Click to expand...
Click to collapse
i'm using the default charger (out of box, 5V 2A) on RN7 (chinese rom), battery doesnt heat up as the app (AccuBattery) saying temperature upto 36 or 37 C, once i seen shooted at 39 C (max)
but in any case phone was slightly heated on top from behind (adjacent to back camera), i think it may be due to processor but the battery temperature was fine

shahm64m said:
i'm using the default charger (out of box, 5V 2A) on RN7 (chinese rom), battery doesnt heat up as the app (AccuBattery) saying temperature upto 36 or 37 C, once i seen shooted at 39 C (max)
but in any case phone was slightly heated on top from behind (adjacent to back camera), i think it may be due to processor but the battery temperature was fine
Click to expand...
Click to collapse
Battery temp depends on ambient temp too. It's about 36°c ambient here. So may be that's the reason for heating.

hk96 said:
Battery temp depends on ambient temp too. It's about 36°c ambient here. So may be that's the reason for heating.
Click to expand...
Click to collapse
i think it is not normal if ambient is 36 and on charging battery temp goes upto 45, you can also check different phones with different chargers
or you can try charging your phone via laptop/PC, it will slow charge the device but you will see the temperature rise of battery be negligible
keep in mind that charger as well as charging cable both may contribute in heating up of phone
by the way which charger are you using?
just for information (not related to thread) you can visit the website regarding temperature and battery life
https://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries

shahm64m said:
i think it is not normal if ambient is 36 and on charging battery temp goes upto 45, you can also check different phones with different chargers
or you can try charging your phone via laptop/PC, it will slow charge the device but you will see the temperature rise of battery be negligible
keep in mind that charger as well as charging cable both may contribute in heating up of phone
by the way which charger are you using?
just for information (not related to thread) you can visit the website regarding temperature and battery life
https://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
Click to expand...
Click to collapse
Thanks for Ur reply.
Yeah, for high ambient it's ok to have high temp. I thought the same.
I am using charger that came with the box.
Saw many people complaining about the same. So thought of creating this thread.

hk96 said:
Thanks for Ur reply.
Yeah, for high ambient it's ok to have high temp. I thought the same.
I am using charger that came with the box.
Saw many people complaining about the same. So thought of creating this thread.
Click to expand...
Click to collapse
keep in mind that im using chinese rom (comes with the mobile), lucky me my mobile dont get heat up, same is the case with my friend we purchased the same RN7 chinese and both got lucky because mobile isnt heating while charging, although im thinking to purchase QC4 charger but don't know will it improves battery life (cycle) or degrade it at the cost of fast cahrging

shahm64m said:
keep in mind that im using chinese rom (comes with the mobile), lucky me my mobile dont get heat up, same is the case with my friend we purchased the same RN7 chinese and both got lucky because mobile isnt heating while charging, although im thinking to purchase QC4 charger but don't know will it improves battery life (cycle) or degrade it at the cost of fast cahrging
Click to expand...
Click to collapse
A custom kernel could be a solution for heating, or just charge at lower amps.
Reg. Qc4 make sure u charge in an AC room ?lol

hk96 said:
A custom kernel could be a solution for heating, or just charge at lower amps.
Reg. Qc4 make sure u charge in an AC room lol
Click to expand...
Click to collapse
I dont think QC 4 require AC room, as my friend owns vivo v15pro with fast charging (5V, 4A). no heating issues, im concerned because RN7 is a budget phone and normally budget phones dont offer QC3 or QC4/+

shahm64m said:
I dont think QC 4 require AC room, as my friend owns vivo v15pro with fast charging (5V, 4A). no heating issues, im concerned because RN7 is a budget phone and normally budget phones dont offer QC3 or QC4/+
Click to expand...
Click to collapse
Redmi note 7 is QC 4 certified by qualcomm.
See image attached.

thanks for the reply, i am still confuse because of the budget phone, i will try QC4 charger sometime later, let see what happens

Related

My battery depletes during charging

My battery depletes even during charging for example if i play game or use barnacle.I have tried 3-4 different ROMS and its still the same.ALso,it take a lot of time to charge 100 percent.What is the problem guys.
isthisreallife said:
My battery depletes even during charging for example if i play game or use barnacle.I have tried 3-4 different ROMS and its still the same.ALso,it take a lot of time to charge 100 percent.What is the problem guys.
Click to expand...
Click to collapse
The radio in the x10 is the problem.
Ask SE to program better.
isthisreallife said:
My battery depletes even during charging for example if i play game or use barnacle.I have tried 3-4 different ROMS and its still the same.ALso,it take a lot of time to charge 100 percent.What is the problem guys.
Click to expand...
Click to collapse
Do you charge the phone via USB (computer)?
This is a common issue if you use your conmputer as a USB charger. Computer USB can't supply enough energy to your phone. The USB current is too low only 0.3mA or 0.5mA.
Just use the ORIGINAL charger or other well-quality charger with higher current (700mA+). This is enough for both charging and playing. Of course the charging will take longer time while playing.
The higher current will not damage your phone. It will charge your phone faster.
NotOriginal and cheap charger may have low current-output or the charger is sometimes bad designed than the phone will recognize it as i computer USB. (if bad designed than the phone takes only low current even if the charger is able to supply more)
_smurf said:
Do you charge the phone via USB (computer)?
This is a common issue if you use your conmputer as a USB charger. Computer USB can't supply enough energy to your phone. The USB current is too low only 0.3mA or 0.5mA.
Just use the ORIGINAL charger or other well-quality charger with higher current (700mA+). This is enough for both charging and playing. Of course the charging will take longer time while playing.
The higher current will not damage your phone. It will charge your phone faster.
NotOriginal and cheap charger may have low current-output or the charger is sometimes bad designed than the phone will recognize it as i computer USB. (if bad designed than the phone takes only low current even if the charger is able to supply more)
Click to expand...
Click to collapse
Sometimes the radio uses more juice than the poor original 700mA charger can supply.
Causing a lot of heat to build up on the battery.
No,i dont charge through usb guys
OmegaRED^ said:
Sometimes the radio uses more juice than the poor original 700mA charger can supply.
Causing a lot of heat to build up on the battery.
Click to expand...
Click to collapse
Not glad to hear that. I have never (only 2+months with X10) observed a problem with the original charger while using the phone (playing, GPS or wifi). Sometimes a bit warmer, which I consider to be common.
In general is the reason the same. The phone requests more then the charger supply
I think it's a software issue.
The bluetooth used to eat away at the battery but BB.67 sorted that out.
Wifi never was a problem for me.
But the GSM Radio is a absolute battery PIG.
It's using so much juice it's scary.
I hope SE sorts out all the ****.
OmegaRED^ said:
I think it's a software issue.
The bluetooth used to eat away at the battery but BB.67 sorted that out.
Wifi never was a problem for me.
But the GSM Radio is a absolute battery PIG.
It's using so much juice it's scary.
I hope SE sorts out all the ****.
Click to expand...
Click to collapse
Well it is probably also related to the signal level..? I use BB 58, never use BT. The GSM signal is almost full at home (while charge).
BTW: To charge the phone with the original charger takes tightly 1h for me. (from +/-30% to 100%) (not using the phone)
Mine's was not charging above 88%, but then I deleted batt. stat and it went to 98% and then 97% and then again to 100% then I used an app called Battery Calibrator and everything is fine now.
Depends what game your playing. Pocket legends with screen and volume on full, wifi connected, overclocked and set performance etc etc I can use a fully charged battery plugged in and drain it in 2hours. Its just supply and demand, the charger can't keep up.
Sent from my X10i using XDA App
isthisreallife said:
No,i dont charge through usb guys
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Click to collapse
You say the battery depletes whilst charging and using barnacle, but u also say ur not charging via usb. Something not adding up jere.
Sent from my Ultima 3 using XDA Premium App
Has anyone smelt the charging circuit of X10 or the Battery when its around 40 C? It smells like something is burning....phone doesn't has any problem, but I just smelt the charging point and battery and its normal?
ankur3467 said:
Has anyone smelt the charging circuit of X10 or the Battery when its around 40 C? It smells like something is burning....phone doesn't has any problem, but I just smelt the charging point and battery and its normal?
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Click to collapse
Nope it's not healthy at all.
It's a massive problem as it's causing severe wear on the device.
OmegaRED^ said:
Nope it's not healthy at all.
It's a massive problem as it's causing severe wear on the device.
Click to expand...
Click to collapse
you mean to say there should not be any smell from the battery? I think it's normal to have electronic smell becoz otherwise my phone is working fine, no problem at all.
ankur3467 said:
you mean to say there should not be any smell from the battery? I think it's normal to have electronic smell becoz otherwise my phone is working fine, no problem at all.
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Click to collapse
Dude last time i checked any sort of burning smell coming from a electronic device is bad.
I had the same smell with my old board and that board failed.
shoby said:
You say the battery depletes whilst charging and using barnacle, but u also say ur not charging via usb. Something not adding up jere.
Sent from my Ultima 3 using XDA Premium App
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Click to collapse
I charge through mains( not usb) and this is happening on mains.
isthisreallife said:
I charge through mains( not usb) and this is happening on mains.
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Click to collapse
Yeah.. it's not getting enough juice.
The GSM radio "heavy power eater" + wifi = no good.
I use battery doctor, which gives options to kill unwanted applications, monitor battery temperature, do full battery recharge cycles.
But also you need to turn off Wifi for battery save and keep u away from radiation
jassyfr said:
I use battery doctor, which gives options to kill unwanted applications, monitor battery temperature, do full battery recharge cycles.
But also you need to turn off Wifi for battery save and keep u away from radiation
Click to expand...
Click to collapse
That's not the point.
The hardware should be able to charge faster than it's using up the juice.
Apps running or not.
OmegaRED^ said:
Dude last time i checked any sort of burning smell coming from a electronic device is bad.
I had the same smell with my old board and that board failed.
Click to expand...
Click to collapse
I checked again and I think its coming just from the battery.. those terminals. My battery never reached over 45 C and usually operates in 32-37 C and phone does not reboot at all by itself, may be I am just over cautious. Also, it is X10 HD (newer batch).
May be there is something wrong with the battery as I have flashed many roms in last few days and had deleted batt. stat everytime I flashed it. Enlighten me on this stuff. Should I undervolt and underclock CPU to avoid any damage to CPU?

Fast Charge and Generic Charger

Hi guys,
N910C with Exynos here.
I have some questions for you guys.
1) Is it beneficial to use a generic (but good) 1/2 A (amp) 5 V (volts) charger over the Samsung charger?
2) What happens if I leave "fast charge" option on? Will it charge faster? Will it try to?
3) When using the provided Samsung charger, is it better for the battery to leave the "fast charge" option off?
4) Is the fast charge (or any fast charged charge) as good and efficient(?) as a 'slow' charge? Will they last the same?
5) What if I turn off the phone, is it going to "fast charge" by default when using the the provided charger?
Thanks in advance guys!
Sent from my SM-N910C
fedecape said:
1) Is it beneficial to use a generic (but good) 1/2 A (amp) 5 V (volts) charger over the Samsung charger
Click to expand...
Click to collapse
No. It won't do any harm, it will just take more time to charge your Note.
2) What happens if I leave "fast charge" option on? Will it charge faster? Will it try to?
Click to expand...
Click to collapse
It will charge slowly. Reason: Fast charging uses a slightly higher voltage for transferring the charge to the charging circuit. That's to keep the amperage low, so the tiny wires won't overheat. It's just according to the formula W = V x A: You can increase the wattage by increasing the amperage (heating up the wires) or by increasing the voltage (keeping the wires cool).
That's the reason why many countries don't use 110 V but 230 V - to decrease the burden on the electricity lines as you can then safely transfer more watts through the same lines. It's a kind of safety measure.
3) When using the provided Samsung charger, is it better for the battery to leave the "fast charge" option off?
Click to expand...
Click to collapse
No. Fast charging does not reach the safety limits defined for our battery.
4) Is the fast charge (or any fast charged charge) as good and efficient(?) as a 'slow' charge? Will they last the same?
Click to expand...
Click to collapse
Yes. Just imagine it this way: If you fill your car at the fuel station slowly or fast - does that show any effect on your car's range ? - No.
5) What if I turn off the phone, is it going to "fast charge" by default when using the the provided charger?
Click to expand...
Click to collapse
If you enabled that in the settings, yes. Otherwise: No.
One question is missing: "Does Fast charge harm my battery if charging under hot climate conditions?"
Answer: No. There are temperature sensors in the battery, decreasing or even stopping the charge if the temperature gets too high.
Short: The difference between slow and fast charging is - slow charging charges slow. And that's it.
Chefproll said:
No.
It will charge slowly.
No.
Yes.
If you enabled that in the settings.
Short: The difference between slow and fast charging is - slow charging charges slow. And that's it.
Click to expand...
Click to collapse
Thanks!
So why isn't fast charge always enabled? Why are we given the slow charge option?
Sent from my SM-T700 using Tapatalk
fedecape said:
So why isn't fast charge always enabled? Why are we given the slow charge option?
Click to expand...
Click to collapse
To be honest: You already answered your own question - by asking your questions.
If you have a look around XDA, you'll find countless threads discussing the "problem" - many users fear Fast charging may harm their battery.
Some users even believe the battery would be charged with an overvoltage (as that voltage is mentioned on the rating plate of the charger), thus causing damage.
No, not true. That higher voltage is just used for safely "transporting" the charge through the wires by keeping the amperage low. After that, the charging circuit will regulate voltage and amperage down to healthy levels prior to reaching the battery.
But people get misled by many self-proclaimed "experts" (which will surely show up here, too) praying that Fast charge is a work of evil; just wait.
That's why Samsung made that feature an option, not a rule. A courtesy for the overcautious.
Chefproll said:
To be honest: You already answered your own question - by asking your questions.
If you have a look around XDA, you'll find countless threads discussing the "problem" - many users fear Fast charging may harm their battery.
Some users even believe the battery would be charged with an overvoltage (as that voltage is mentioned on the rating plate of the charger), thus causing damage.
No, not true. That higher voltage is just used for safely "transporting" the charge through the wires by keeping the amperage low. After that, the charging circuit will regulate voltage and amperage down to healthy levels prior to reaching the battery.
But people get misled by many self-proclaimed "experts" (which will surely show up here, too) praying that Fast charge is a work of evil; just wait.
That's why Samsung made that feature an option, not a rule. A courtesy for the overcautious.
Click to expand...
Click to collapse
Awesome! Good to know
Hope this thread helps other people too
Thank you!
Chefproll said:
To be honest: You already answered your own question - by asking your questions.
If you have a look around XDA, you'll find countless threads discussing the "problem" - many users fear Fast charging may harm their battery.
Some users even believe the battery would be charged with an overvoltage (as that voltage is mentioned on the rating plate of the charger), thus causing damage.
No, not true. That higher voltage is just used for safely "transporting" the charge through the wires by keeping the amperage low. After that, the charging circuit will regulate voltage and amperage down to healthy levels prior to reaching the battery.
But people get misled by many self-proclaimed "experts" (which will surely show up here, too) praying that Fast charge is a work of evil; just wait.
That's why Samsung made that feature an option, not a rule. A courtesy for the overcautious.
Click to expand...
Click to collapse
Hi again,
Let me ask you one last question.
I need to buy a new battery because I never make it home with charge. Is there anything that I have to keep in mind? Is it OK if I use fast charge with a generic battery?
Thanks
Sent from my SM-N910C
fedecape said:
I need to buy a new battery because I never make it home with charge. Is there anything that I have to keep in mind? Is it OK if I use fast charge with a generic battery?
Click to expand...
Click to collapse
I'd stick with the original Samsung batteries. They had problems in the past (deforming, bulging S4 batteries losing almost all of their capacity - I had one of those myself, got exchanged for free), but I guess they solved the problem.
Reason is: Li-Ion batteries may have different charging parameters; like maximum allowable current.
The Fast charger was made specifically for the Note 4s battery. If you buy a different type, the fast charging current may exceed the current rating of a third party battery, leading to highly unwanted effects including destruction of the battery.
This is not too likely because each battery has (or should have) a built-in charging circuit for limiting the current, which even switches off charging if the battery's temperature reaches unhealthy levels. But it's still possible, depending on the battery type and manufacturer. I wouldn't place any high bets on charging circuits of cheap batteries; everything's possible.
That's why it's best to stick with original batteries - at least in this case.
fedecape said:
Hi again,
Let me ask you one last question.
I need to buy a new battery because I never make it home with charge. Is there anything that I have to keep in mind? Is it OK if I use fast charge with a generic battery?
Thanks
Sent from my SM-N910C
Click to expand...
Click to collapse
If I were you I would stick with the Samsung battery, they don't cost that much and they come with their own charger and holder. It may cost a little more but you get a full warranty with it.

min/max voltage (mV) for original phone battery

Good day, can anyone tell me the minimum and maximum voltage (mV) for original phone battery? Not the specs of the battery but from your actual usage.
With stock battery and bcharger, around 900 ma. In discharging the values is between 90 and 350 ma or 3,8 mv.
Sent from my SM-G928F using Tapatalk
MoHuToP said:
With stock battery and bcharger, around 900 ma. In discharging the values is between 90 and 350 ma or 3,8 mv.
Sent from my SM-G928F using Tapatalk
Click to expand...
Click to collapse
So do you get a constant flow of 3800 mV?
First of all why do you ask?
It's not tied to battery but in kernel settings (max Voltage).
If you have problems with not constant voltage it's probably charger/cable related.
Zola III said:
First of all why do you ask?
It's not tied to battery but in kernel settings (max Voltage).
If you have problems with not constant voltage it's probably charger/cable related.
Click to expand...
Click to collapse
Im trying to figure why my phone drains from 40% - 0% in seconds.
I've tries different charge and cables.
4312mV is my max and phone flickers and switches off if mV drops below 3500mV.
zigbye82 said:
Im trying to figure why my phone drains from 40% - 0% in seconds.
I've tries different charge and cables.
4312mV is my max and phone flickers and switches off if mV drops below 3500mV.
Click to expand...
Click to collapse
V max you have is OK.
Frankly I don't know what's going on in your case and I had all kind of ****s happening to me with this phone regarding charging (buried 2 original chargers, couple of cables, had my phone USB port ****ed up & replaced & on a second battery right now). What I do know it's that battery charging logic is totally ****ed up (by Samsung) on the kernel side. I suppose that you are on CM 12.1 (or some of its derivatives)?
If you are try a new Nikolas kernel (rev 2) as from rev 2 their is a new charging driver that we hope it will resolve charging logic problems. Naturally wipe all (except data) when you flash it.
Best regards.
Yes I'm using n1kolaa ROM and kernel. But on other build my phone would have just switch off around 30-40% but on his kernel it would drain fast from around 40% but I would see the "phone is shutting down" dialog now.
In using a 1 month old battery and I suspect that it may be a fake but I bought it from a Samsung store.
Thanks for the info.
zigbye82 said:
Yes I'm using n1kolaa ROM and kernel. But on other build my phone would have just switch off around 30-40% but on his kernel it would drain fast from around 40% but I would see the "phone is shutting down" dialog now.
In using a 1 month old battery and I suspect that it may be a fake but I bought it from a Samsung store.
Thanks for the info.
Click to expand...
Click to collapse
It's a habit of the Samsung battery that it have asymmetrical discharge, it starts to go down faster at 50% & last 15% drains really fast.
It's possible that it's bad battery or faked one.
I bought Anker replacement one & I am satisfied with it, it doesn't last longer but it discharges much more symmetrical to the last 20%...
After a lot of research I ordered an Anker 2200mah yesterday. hope that it performs better than this one.
zigbye82 said:
After a lot of research I ordered an Anker 2200mah yesterday. hope that it performs better than this one.
Click to expand...
Click to collapse
A little lazy on getting NFC on other than that it's good.

I think ebay "qc3" car charger blew out my QC3 mosfet.....

Using Current Monitor, could you guys tell me what it reads for Max USB Current when you plug your A7's into stock or any QC charger? Or if there is a better app to see if it's indeed the board thats partly blown, despite that being clear since quick charging just doesn't work at all anymore and even PC doesn't want to recognize A7 once in a while.
Skv012a said:
Using Current Monitor, could you guys tell me what it reads for Max USB Current when you plug your A7's into stock or any QC charger? Or if there is a better app to see if it's indeed the board thats partly blown, despite that being clear since quick charging just doesn't work at all anymore and even PC doesn't want to recognize A7 once in a while.
Click to expand...
Click to collapse
About 3 amps? It always reports 2500-3000 mAh. I'm telling you this by memory, i didn't go and test that
this is my phone with the stock charger.
Got Accubattery as well to see and.... ~0.23-0.45A from laptop, wall, or anything at 37% when it would otherwise 3A it.
Hopefully new boards from Ali Express remedy this and maybe i'll try to see what burned out in the original one once I replace.
So, turned out to be bad cables that I've only got to test a little earlier w/ same chargers. Pheeeeeew!!! Changed my Ali order to still get 1 spare usb board and a battery for far, far less than rush shipping just 2 boards.
No ****, I've only ever seen 1500mah. Wonder what problem I've got? Going from stock charger.
TPMJB said:
No ****, I've only ever seen 1500mah. Wonder what problem I've got? Going from stock charger.
Click to expand...
Click to collapse
on low charge? You should see 3 amps below 50% batt
Choose an username... said:
on low charge? You should see 3 amps below 50% batt
Click to expand...
Click to collapse
The AEX lockscreen says 1500mah while accubattery has a high of 2200mah at 43% battery.
Lockscreen always says 1500 from my outlet though. From a computer it only says 500mah
TPMJB said:
The AEX lockscreen says 1500mah while accubattery has a high of 2200mah at 43% battery.
Lockscreen always says 1500 from my outlet though. From a computer it only says 500mah
Click to expand...
Click to collapse
The lockscreen meter is bull****. In my case I never saw anything upon 5V out of that meter
Choose an username... said:
The lockscreen meter is bull****. In my case I never saw anything upon 5V out of that meter
Click to expand...
Click to collapse
Good to know.
I find it odd my battery drains 30% on my drive to work, and then while at work it loses about 10% over 8 hours. I installed accubattery so maybe I'll find the culprit. I usually don't use maps on my way to work.
Well, don't mean to hijack a thread.

Slow Fast Charging of Huawei P10 Lite

My Huawei P10 Lite is charging very slow and just increment by 1 % in 5 minutes. The charging is slow in summer and it is fast in winter.The phone back and charger gets hot in summer. When I switched it off and then apply charging to it, it charges fast. I don't know what is the problem with it? In summer,my area temperature reaches to 40 Celsius degree. Please help
faizanzaheer said:
My Huawei P10 Lite is charging very slow and just increment by 1 % in 5 minutes. The charging is slow in summer and it is fast in winter.The phone back and charger gets hot in summer. When I switched it off and then apply charging to it, it charges fast. I don't know what is the problem with it? In summer,my area temperature reaches to 40 Celsius degree. Please help
Click to expand...
Click to collapse
You pretty much answered the question yourself. To prevent overheating it charges slower. When it's turned off it generates less heat and can therefore charge faster. When ambient temperature is high it charges slowly.
Trixanity said:
You pretty much answered the question yourself. To prevent overheating it charges slower. When it's turned off it generates less heat and can therefore charge faster. When ambient temperature is high it charges slowly.
Click to expand...
Click to collapse
It's doing exactly ehat my xa2 should be doing, conserving battery life (capacity)
Trixanity said:
You pretty much answered the question yourself. To prevent overheating it charges slower. When it's turned off it generates less heat and can therefore charge faster. When ambient temperature is high it charges slowly.
Click to expand...
Click to collapse
I think it should not do this way.As the model is made for different regions so mine is made for my region and it should not charge slow then. What you say?
faizanzaheer said:
I think it should not do this way.As the model is made for different regions so mine is made for my region and it should not charge slow then. What you say?
Click to expand...
Click to collapse
It's physics. There is absolutely no way for them to counteract the effects of warm temperatures other than to slow down charging. If you had air conditioning you'd probably be able to get fast charging to work.
The variants of a model generally don't have that many differences. It is a mass produced product after all. Mostly it's down to software. Occasionally RAM/storage configuration (which is also the case with this phone) and on rare occasions it goes deeper than that.

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