Develop Bugs

Quality of headphone output

Hi! I realize this is a small concern for many - but what is the quality of the headphone jack/amp, esp. with higher impedance headphones? The A1 had a beefy amp which could push beefier headphones, but I wonder if Xiaomi kept it for the A2L.

I remember when Mi A1 was launched that the audio output quality was highlighted. The same thing isn't happening with this phone, so I think the amp is not as good as the previous.
But I could be wrong.

I'm using it with a very low impedance headphone, and I do get a bit more noise/hiss than with my previous phone (Oneplus 3). I was able to improve the quality quite a bit through installing Viper4Android though. Just install it through Magisk (Viper4Android FX Materialized v1.7 2.5.0.5.). Works straight away.

BubuXP said:
I remember when Mi A1 was launched that the audio output quality was highlighted. The same thing isn't happening with this phone, so I think the amp is not as good as the previous.
But I could be wrong.
Click to expand...
Click to collapse
That was my thought exacly - and my concern. It would be a pity.

Curunir said:
I'm using it with a very low impedance headphone, and I do get a bit more noise/hiss than with my previous phone (Oneplus 3). I was able to improve the quality quite a bit through installing Viper4Android though. Just install it through Magisk (Viper4Android FX Materialized v1.7 2.5.0.5.). Works straight away.
Click to expand...
Click to collapse
Hiss was a problem with the A1 too, precisely because of the amp, when paired with low-impedance phones.
Well, I guess I will have to wait for the phonearena review...

landsome said:
Hiss was a problem with the A1 too, precisely because of the amp, when paired with low-impedance phones.
Well, I guess I will have to wait for the phonearena review...
Click to expand...
Click to collapse
I should add though that I'm using modified Etymotic ER-4P's. They are already pretty treble rich out of the box with a 27 ohm impedance, but I've changed the cords so that the actual impedance is probably closer to 10 now. I like them this way, but they aren't very forgiving and reveal anything..

For those who can understand those numbers:
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taken from the GSMArena Mi A2 Lite review

GSM Arena has a nice explanation of those values somewhere in their website. The A2 does well.

Widevine L1

So I've been asking this question on almost all the new phones' forums recently because it's never mentioned in any of the spec websites or the manufacturers website. None of the YouTube tech channels check it either except for one which he also forgets to do for some of the phones.
The question is.... Is this phone Widevine L1 certified?
Anybody who already bought the phone can check through downloading an app via playstore. App name is 'drm info'.
Screenshot would be appreciated for anybody who are looking for this particular feature in the next phone they're gonna buy. Thanks in advance guys.
Recently, thanks to the Poco phone f1, a few known YouTubers mentioned the device having widevine L3 . Hopefully, manufacturers start implementing this feature is not all their phones, especially Xiaomi!!!

The phone isnt released yet so nobody can check. I have contacted ZTE to find out for you. It was implemented into Axon 7 so i dont expect anything different.

rikin93 said:
The phone isnt released yet so nobody can check. I have contacted ZTE to find out for you. It was implemented into Axon 7 so i dont expect anything different.
Click to expand...
Click to collapse
Axon 7 is my daily driver and no it doesn't support L1. Thanks for your efforts.
I leave this question on all new forums so others can know whether a particular device has L1 or not, I know the phone is not out.

still_living said:
Axon 7 is my daily driver and no it doesn't support L1. Thanks for your efforts.
I leave this question on all new forums so others can know whether a particular device has L1 or not, I know the phone is not out.
Click to expand...
Click to collapse
On my ZTE Axon 7 there is: Security Level L3 and Max HDCP Level Supported Unprotected (Android 9).
Regards

PanNet said:
On my ZTE Axon 7 there is: Security Level L3 and Max HDCP Level Supported Unprotected (Android 9).
Regards
Click to expand...
Click to collapse
Yes we know that. Waiting for the axon 9 pro

I can confirm it has widevine L1
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rikin93 said:
I can confirm it has widevine L1
Click to expand...
Click to collapse
Thanks man, appreciate it. Glad ZTE started doing L1

Bluetooth 4.2 or 5.0

Hi,
Can anyone confirm that the Mate 20x have bluetooth 5.0.
There are many rumor in China that the Mate 20x has Bluetooth 4.2
and the official website of Huawei seems to be deliberately fuzzy about
this
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Thanks.
Anthony

It's iffy... The official site does not list the Bluetooth version of the Mate 20 X. I tried to find the answer but didn't find it.
edit: I believe Mate 20X is not BT5.0! Both Mate 20 and 20 Pro are BT5.0!

I can confirm Mate 20x has BT4.2 and it has very poor connection to my car stereo. I just use the headphone jack. It sucks.

It doesn't depend on Bluetooth version, your car audio problem is more likely Bluetooth audio codec related. See other posts.

My Bluetooth is steller. I have zero connectivity issues and the range is great.

Pretty certain it's Bluetooth 5.0

Not the be all and end all, but gsm arena has it as 5.0
https://www.gsmarena.com/huawei_mate_20_x-9369.php

It's 5.0.

antiochasylum said:
It's 5.0.
Click to expand...
Click to collapse
Strange, AIDA64 shows bluetooth 4+.

gee2012 said:
Strange, AIDA64 shows bluetooth 4+.
Click to expand...
Click to collapse
Everything you Google says 5.0.
It's 5.0 ?

yetiweston said:
Not the be all and end all, but gsm arena has it as 5.0
https://www.gsmarena.com/huawei_mate_20_x-9369.php
Click to expand...
Click to collapse
Okay, let's stick to that

bruciebabie1963 said:
I can confirm Mate 20x has BT4.2 and it has very poor connection to my car stereo. I just use the headphone jack. It sucks.
Click to expand...
Click to collapse
Hi, may I ask what is the current version of your mobile phone, and what is your car model and annual model?

Tested the global version with Toyota Prius 3,and everything OK, Spotify works as it should.

Question EU rom vs NA rom?

Okay, just trying to figure this. I have a OnePlus 9 Pro with North America rom for use in North america on T mobile. What would I gain/loose by flashing the EU rom?

Biggest advantage to me, was getting the updates straight from OP and not waiting on T-Mobile. On top of getting rid of the T-Mobile bloatware.

My device is not anT Mobile device. It is unlocked so updates still come straight from OnePlus. Any reason to flash the EU rom?

Ok, asking this one more time. This is mostly due to slow updates for the unlocked North America (Global). If I switch from the Global rom to EU and I'm loosing anything? I believe I read I loose the equalizer with the EU version? Anything else?

dustintinsley said:
Ok, asking this one more time. This is mostly due to slow updates for the unlocked North America (Global). If I switch from the Global rom to EU and I'm loosing anything? I believe I read I loose the equalizer with the EU version? Anything else?
Click to expand...
Click to collapse
What equalizer it still has one for headphone blutooth in setting dolby and Eu is getting updates first from what I've seen
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toolhas4degrees said:
What equalizer it still has one for headphone blutooth in setting dolby and Eu is getting updates first from what I've seenView attachment 5304611
Click to expand...
Click to collapse
Idk. This is why I am asking. I don't know the difference between them, trying to figure it out

toolhas4degrees said:
What equalizer it still has one for headphone blutooth in setting dolby and Eu is getting updates first from what I've seenView attachment 5304611
Click to expand...
Click to collapse
Native Dolby and equalizer on the phone is an absolute joke. Sound quality is still crap.
This is why rooting is so important as you can install real Dolby (DDplus), and Viper. That makes the sound actually incredible.

Burt Squirtz said:
Native Dolby and equalizer on the phone is an absolute joke. Sound quality is still crap.
This is why rooting is so important as you can install real Dolby (DDplus), and Viper. That makes the sound actually incredible.
Click to expand...
Click to collapse
Agreed

So, should I just switch to EU rom? Won't loose anything?

Question Add the Dolby Vision to Redmi K40S - is it possible ?

Hey guys,
I'm having the Redmi K40S and it's quite a twin to the Poco F4.
Some differences between them that can't touch such as plastic back vs glass back or camera 48 MP vs 64 MP then ok let them go.
But then 1 thing remains that I believe it might be tweaked here and that is the Dolby Vision which is on the Poco F4 - not on the Redmi K40S.
Can anything to be done so that the Redmi K40S can have Dolby Vision for the screen guys @[email protected]?

hoe69atm said:
Hey guys,
I'm having the Redmi K40S and it's quite a twin to the Poco F4.
Some differences between them that can't touch such as plastic back vs glass back or camera 48 MP vs 64 MP then ok let them go.
But then 1 thing remains that I believe it might be tweaked here and that is the Dolby Vision which is on the Poco F4 - not on the Redmi K40S.
Can anything to be done so that the Redmi K40S can have Dolby Vision for the screen guys @[email protected]?
Click to expand...
Click to collapse
The k40 S has Dolby vision unlike the k40.
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NOSS8 said:
The k40 S has Dolby vision unlike the k40.
Click to expand...
Click to collapse

Really ? Then it's quite weird because on Gsmarena they don't show it on the spec sheet.
Also on the Youtube I watched them play game on both F4 and K40S => the screen on F4 is much better. I'm using the K40S now and feel like it's screen is even worst then my iphone 11 in colors...zzz

hoe69atm said:
Really ? Then it's quite weird because on Gsmarena they don't show it on the spec sheet.
Also on the Youtube I watched them play game on both F4 and K40S => the screen on F4 is much better. I'm using the K40S now and feel like it's screen is even worst then my iphone 11 in colors...zzz
Click to expand...
Click to collapse
https://www.mi.com/redmik40s

try this

In the DRM test, the K40S is shown to support Dolby Vision, which means that you can watch Dolby Vision in Netflix.