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Unhappy with Mi 9 battery draining and SOT, thinking about changing for mate 20 ...

Hi all.
I have written a comment to another created threat in mi 9 forum, but I would like to read your comments here too.
I'm having battery draining and SOT problems with my mi 9, like I said in title (like most people I think).
I have tried everything to improve my battery life in my mi 9, and It's not bad at all, but I was expecting better performance for a top xiaomi smartphone with sd 855 and 5 months old in spite of the fact that it has "only" 3300mah battery ...
I'm not a heavy user and I try to get max SOT and minimum battery drain in all my phones, because I don't like changing smartphones very often and I like to take care of it.
I came from a Moto G4 plus, and I had 5h of SOT in 48h without high standby drainage (maybe 1-2% of drainage overnight in 7-9h) with a 3 years old battery and worst hardware and software. In mi 9, I'm getting 5-6h of SOT in 48-72h. Not bad at all, but standby drainage is awfull. It loses 20-25% of the battery every 48h (3-5% overnight), and in a smartphone with such a fair battery it's a problem. If I'm not getting great results with not heavy use and my smartphone is new, I don't want to think in 2-3 years + mid-heavy use ... I have tried everything (full wipes, reinstalling, the most powerfull battery saving, etc) and I don't have great result. Standby drainage is very hight compared to other phones (I have tried a friend poco f1 and I had 10h in 48-72h with 1% overnight drainage. It was awsome).
And now the question ...
I'm thinking of changing my mi 9 for a huawei mate 20... I still have the 30d Amazon refund and I am not comfortable with my phone's battery.
- Mate 20 pros vs mi 9: +700 mah battery and more efficient, the best ips panel without burn-in problem, and fingerprint sensor behind the screen (no like too much in-screen fingerprint at all).
- Pros mi 9 vs mate 20: sd 855 (but geekbech it's very very similar, and antutu winner is mi 9 only for gamming but mate 20 still on top), unlocking bootloader for mi 9 (better comunity in xda, but if emui works well I think I don't need custom rooms, the problem here is Trump/google vs China ... but now apeares to be solved and we would have newer updates to Android Q), wireless charging (I don't use it because smartphone is hotter when charging 3-5º vs cable+1,5a charger, It takes more time to charge with elevated temperature), not jack (better for waterproof), maybe very little better cameras in mi 9 and little better results, 4 months younger (very little difference) and It's the top phone on xiaomi (mate 20 is the little brother because we have mate 20 pro, 20x, p30, p30 pro and we will have soon mate 20 and mate 20 pro; and that could be worst because we will get latter uptdates in mate 20).
What do you think? Would you change mi 9 for mate 20? Reading your comments. Greetings.

If your looking for better battery life I'd say get the mate 20. I've had mine for just under 3 months. Best damn purchase I've ever made (purchased way below retail during trump ban). I consider myself a medium to heavy user (I don't play mobile games however). With some useless features turned off and some fetch services disabled. I can easily get 8-10 hrs on screen time with this phone, it's the best battery life I've ever had, prior I was getting 4hrs with another Android phone.

Andrew Tuon said:
If your looking for better battery life I'd say get the mate 20. I've had mine for just under 3 months. Best damn purchase I've ever made (purchased way below retail during trump ban). I consider myself a medium to heavy user (I don't play mobile games however). With some useless features turned off and some fetch services disabled. I can easily get 8-10 hrs on screen time with this phone, it's the best battery life I've ever had, prior I was getting 4hrs with another Android phone.
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What about heat and performance?

quiquetdelcampet said:
What about heat and performance?
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Heat? I haven't had any issues with heat if by that you mean does the phone get too hot to touch, it's cool the majority of the time. As for performance, EMUI 9.1 is very smooth and I haven't had any slow downs ??.

Andrew Tuon said:
Heat? I haven't had any issues with heat if by that you mean does the phone get too hot to touch, it's cool the majority of the time. As for performance, EMUI 9.1 is very smooth and I haven't had any slow downs .
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And what about temperature playing PUBG mobile for example 30 min? Have you tried?
Really thanks!

quiquetdelcampet said:
And what about temperature playing PUBG mobile for example 30 min? Have you tried?
Really thanks!
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Sorry bud I don't play games on my phone, wouldn't know.

quiquetdelcampet said:
And what about temperature playing PUBG mobile for example 30 min? Have you tried?
Really thanks!
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After 30 mins of Asphalt 9 the device is damn cold... Could even be used as a cooler

xphy32 said:
After 30 mins of Asphalt 9 the device is damn cold... Could even be used as a cooler
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Just a month ago I had Poco F1. On the battery Sot was similar to the 20 mate. Night drainage in Poco 1-3%, mate 2-5%. Mate saves better on screen on. Performance similar to Poco. If I had to exchange Mi9, it was on mi9t Pro.

Battery life thread

I've got both the S20 ultra, with its 5k mah battery and the p40 pro with its 4.2k battery. I'm getting better battery life from the p40 pro ? so far anyway. Latest 114 update is on the p40 pro
Please post your consumption
With 50% left this ain't bad at all. I am using 60gz though, I see no real benefit of 90hz. So minor to my eyes. No Google installed either

It looks as though not having you're screen on 90hz makes a large difference.
On average over 21h usage I'm getting 7 to 8hours of SOT but then the battery will be about 10% my screen is set to 90hz spo I must use a lot of power.
That's one hell of a mobile phone order :good: how is the Samsung ultra which do you prefer? How is the build quality between the two which feels better?

Combatfroggy said:
It looks as though not having you're screen on 90hz makes a large difference.
On average over 21h usage I'm getting 7 to 8hours of SOT but then the battery will be about 10% my screen is set to 90hz spo I must use a lot of power.
That's one hell of a mobile phone order :good: how is the Samsung ultra which do you prefer? How is the build quality between the two which feels better?
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Feel is subjective. Both in cases so can't really feel. P40 being smaller is more comfortable.
That snapdragon gpu is a beast. And that phone never gets above 35c whether fast charging or games. P40 pro is about 3 to 5 degrees celcius hotter generally.
They both play any game easily. When it comes to difficult emulator games the snapdragon is a few frames better
The p40 pro is more efficient even with smaller battery, I'll try 90hz tomorrow
S20 ultra looks more premium, just. Has better sounding speakers too but the p40 pro is louder
The p40 pro has a better camera. Not by much, generally better zoomed in pics. Much better low light and better focus ?
Leaning towards keeping the p40 pro

Samsung have had a focus problem on there phones since 9 series devices...
I'm not sure whether to send the p40 back and keep the note 10+ or not??
I do prefer emui over Samsung ui

You can see the difference in the power drain between 90 hz and 60hz on the attached photo. 60hz being the bottom power drain.
I have also noticed that you can turn off 5G up in the quick settings which might save some power? No point having it turned on when hardly anywhere has 5G

Combatfroggy said:
You can see the difference in the power drain between 90 hz and 60hz on the attached photo. 60hz being the bottom power drain.
I have also noticed that you can turn off 5G up in the quick settings which might save some power? No point having it turned on when hardly anywhere has 5G
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That does look substantial. I'm checking this myself. I prefer EMUI too can't stand Samsungs new battery info layout

Started another battery cycle with the screen set to 60hz and 5G off. And after 1 hour of usage and 1hr of SOT I'm at 98%!
Very interested to see the results tomorrow evening.

lawtq said:
I've got both the S20 ultra, with its 5k mah battery and the p40 pro with its 4.2k battery. I'm getting better battery life from the p40 pro ? so far anyway. Latest 114 update is on the p40 pro
Please post your consumption
With 50% left this ain't bad at all. I am using 60gz though, I see no real benefit of 90hz. So minor to my eyes. No Google installed either
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if your ultra is exynos its not suprising you get bad battery life out of the s20

xnostra said:
if your ultra is exynos its not suprising you get bad battery life out of the s20
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It's snapdragon

lawtq said:
It's snapdragon
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well that is more bad then cause the snapdragon is the best one with regards to s20 ultra but i know their optimization is really not good maybe thats why you get bad sot

xnostra said:
well that is more bad then cause the snapdragon is the best one with regards to s20 ultra but i know their optimization is really not good maybe thats why you get bad sot
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It's not bad with the snapdragon. It's good actually. It's just better with the p40 pro

Which one are you sticking with the s20 or the Huawei?

lawtq said:
Feel is subjective. Both in cases so can't really feel. P40 being smaller is more comfortable.
That snapdragon gpu is a beast. And that phone never gets above 35c whether fast charging or games. P40 pro is about 3 to 5 degrees celcius hotter generally.
They both play any game easily. When it comes to difficult emulator games the snapdragon is a few frames better
The p40 pro is more efficient even with smaller battery, I'll try 90hz tomorrow
S20 ultra looks more premium, just. Has better sounding speakers too but the p40 pro is louder
The p40 pro has a better camera. Not by much, generally better zoomed in pics. Much better low light and better focus ?
Leaning towards keeping the p40 pro
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Yes I believe snapdragon still better for gaming. Only problem is our area only have the exynos varient

My Mate 20 Pro with 4200 mAh was easily the best smartphone that I owned in terms of battery life. I also used to have a Honor 8 Pro for a while and it had good battery life as well. So I'm not surprised that the P40 Pro's battery life is great. Maybe it's because of Huawei's "aggressive RAM management", not sure.

I don't think the p40pro is in the same league as the mate 20 Pro that things battery was epic.

I have the p40 pro. Everytime it reaches 13%, i know it'll run out of battery soon, less than 5 minutes. Is this happening to you too? Cause it's really frustrating. My old p30 pro never did this...

lawtq said:
I've got both the S20 ultra, with its 5k mah battery and the p40 pro with its 4.2k battery. I'm getting better battery life from the p40 pro ? so far anyway. Latest 114 update is on the p40 pro
Please post your consumption
With 50% left this ain't bad at all. I am using 60gz though, I see no real benefit of 90hz. So minor to my eyes. No Google installed either
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I'm in a similar if lower specced (but only just) kinda of boat currently using the Samsung note 10 lite and I just got the P40 non pro this week.
Battery life is definitely way better on the P40. The Samsung I'm using very lightly right now (mainly yt music and regular phone calls) and it doesn't last that much longer than the P40 which is in use almost all ways. If not it's probably a hot-spot or always on display or both.
Turning off 5g definetley makes a difference. I'm in London so I have 5g almost everywhere but even with 5g disabled and lower battery usage I'm seeing really fast connection speed (over 700B/s)
Really want to make a test of the ultra pow energy mode. My phone thinks it can achieve ove 60 hours run time from 69% battery charge. If that's really possible just wow.
I haven't tested a lot of games yet but I have fired up xplane. It ran perfectly looked gorgeous in this tiny pixel dense screen and hardly used the battery faster than browsing. Got some emulators too they run like honey and the phone doesn't even get hot at all so far in the emulators I've tried.

Question Couple of questions pre buying

Hi, thanks for any help.
I'm between a mi 11 or a OnePlus 8/9 pro and the only thing I'm concerned about is whether MIUI might be a bit buggy or 'incomplete' feeling - seen mixed things on the forum. I've read many of the reviews so know most of the basics re battery / camera etc.
Generally with the stock ROMs do people find they have any frequently annoying issues?
It's also a bit quieter than other phones with custom ROMs - is that because it's a newer handset or is it unlikely that these will be developed?
People generally happy with their purchase?
Thanks for your help

I would recommend the OnePlus 9 Pro, the Mi 11 has AWFUL battery life.

Wahoux said:
I would recommend the OnePlus 9 Pro, the Mi 11 has AWFUL battery life.
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My battery life is normal/fine.

Wahoux said:
I would recommend the OnePlus 9 Pro, the Mi 11 has AWFUL battery life.
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What do you mean?

For me mi 11 is the phone with best battery life of all phones I had. I think battery is very good, but probably if you are a heavy gamer it won't last that long. But then no phone will last 2 days with top performance. It is like wanting a race car but no gas consumption.

I find the battery life good enough I get around 6-7 sot that must be around similar to other high end using similar spec also don't forget this actually is cheaper , fhd 120hz , fhd because I cant notice the difference

The battery life is really not that bad.. It easily lasts me through the whole day, with 5-6hrs of SOT (120HZ, 1440P resolution always on) Also the included charger is really fast, so even if the battery life is not the best, it can be easily fully charged in 35-40minutes.

4000mAh from 9T into the mi 9?

Hello,
my phone needs a new battery. After looking around i have seen that the 9T has a 4000mAh (BP41) battery. Is it possible to use it in my mi9?

This is what you want:
https://www.aliexpress.com/i/1005002939926667.html
LEHEHE BM3L 4000 mAh​
I'm using it for several months now without issues. I've got it due to multiple recommendations on telegram.
So far I didn't see any negative feedback for it.

You can just replace your battery with a compatible one. The one from the 9T shouldn't be compatible. Also I suspect all other batteries with higher capacities than the official one are just fake advertising. I have actually one 7000mAh and it is no more than 3300. But working ok though.

The mentioned battery by me isn't fake advertising, it's actually slightly thicker than the original battery. But thinking that a 7000 mAh battery would fit in the same space... lol

General I got 12 Pro and still have the 11T Pro.

I recently got a new 12 Pro as I hoped Xiaomi fixed the screen and proximity issues from 11T Pro. The 11T Pro is a great phone, the issues I had was a lazy proximity screen sensor which just didn't operate as smooth as an iPhone or Galaxy. No other flaws. So I decided to go with a 12 Pro looking for that screen improvement and a better proximity sensor.
The 12 Pro is everything 11T Pro is, except it does have a better screen more pixels,better colours, resolution and fingerprint recognition that instantly wakes the screen as soon as you touch it!
But still I can get over it that the difference in these two phones is minimal. Genuinely 11T Pro is a monster phone with great components and even better price. If I knew what I was getting, I probably would have stuck with 11T Pro as, 12 Pro is certainly not worth buying of you are coming from 11Tp.
So far from my own tests and checks, 11T Pro tops 12 Pro in every aspect, speed, opening of apps, images and videos rendering which I find a bit disappointed that older phone performs better them a new flagship.
For your info I attached a few screenshot from Antutu Benchmark and Geekbench tests.

So you got what you wanted?
The chipsets are nearing their thermal limits; faster processors, 5G and variable refresh rate displays use more mAh and generate more heat as a byproduct. The area to dissipate this thermal load is largely fixed by the dimensions of the device means hotter running devices. Not a pretty picture when you consider the implications.
Worse accurate color calibration of variable refresh rate displays is imperfect, there are simple too many variables. If color calibration is off, the gamma correction gets skewed even more.
Xiaomi probably had room for improvement with their displays. Samsung's display performance in terms of color rendering accuracy zenithed with the Note 10+.
At least you got a better display.
Samsung's S22U can't offer me that or SOT that's better even with a larger 700 mAh battery. It is a buttery smooth better hand warmer though
Sometimes hardware upgrades aren't a good option...

I also have both phones and I completely agree with nothing you said.

NOSS8 said:
I also have both phones and I completely agree with nothing you said.
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How's your battery on 12 pro? I find mine really poor

Evo400 said:
How's your battery on 12 pro? I find mine really poor
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It depends on the usage and I'm using a Xiaomi EU rom.
blackhawk​explained the why and how very well.
Xiaomi Eu rom,same apps same usage.
Poco f2 pro Qualcomm Snapdragon 865 4700mHa +/- 38 hours/ AOSP +/- 48 hours
11 T pro Qualcomm Snapdragon 888 5000 mHa +/- 35 hours
12 pro Qualcomm Snapdragon 8 Gen1 4600 mHa +/- 30 hours
Sony Xperia J(st26) Qualcomm Snapdragon S1 1750 mHa +/- 15 days

Thanks for that.
I'm also using latest Xiaomi. EU ROM on my 12.
11T pro is still on the global ROM
I find the 12 is really heavy on the battery for pretty much very same task and style of usage in comparison to 11T. The battery gets to 25% by mid day while this never occurred with 11T. ( That would be at least around 50%)
According to battery app what seems to drain the batteries on the 12 is the screen! Although I don't have display on,60hz only, etc .

Evo400 said:
Thanks for that.
I'm also using latest Xiaomi. EU ROM on my 12.
11T pro is still on the global ROM
I find the 12 is really heavy on the battery for pretty much very same task and style of usage in comparison to 11T. The battery gets to 25% by mid day while this never occurred with 11T. ( That would be at least around 50%)
According to battery app what seems to drain the batteries on the 12 is the screen! Although I don't have display on,60hz only, etc .
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it is possible that this will be fixed with the optimization updates of the Snapdragon 8 Gen1 .
Also the battery saver setting set to "close apps after 10 minutes works randomly".
I use a 30w charger.

NOSS8 said:
it is possible that this will be fixed with the optimization updates of the Snapdragon 8 Gen1 .
Also the battery saver setting set to "close apps after 10 minutes works randomly".
I use a 30w charger.
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There are reports here that the latest beta release from Samsung greatly improved the S22U's performance. Global power management tends to cause erratic behaviors of most devices especially bluetooth apps.