Many Questions About Redmi 4 Prime

[Jujudemetz]

Hello!

I'm French, and I had some questions about 4 Prime (I'll have it in many days).

1- I actually have a Huawei Y550, but the CPU temperature (not battery!) is quite hot (during games/bench) up to 160°F - 70°C, and then throttle.
For the 4 Prime, I think that is better (14nm), is this throttle in benchmark or intensives applications? (I add thermal pad in Y550, but nothing changed, I'll try!)

2- About performances, is it various between official ROMS (8.x.x) and weekly updates (6.x.x) or it's same?

3- Anybody can test on his 4 Prime with 'CPU Prime' and other app ('TempMonitor', temperature is on notification bar) and post his temperature? (After many tests, CPU Prime is the stronger for temperature)

Thanks!

 

[pilililo2]

Absolutely no heat issues whatsoever during gaming.
Performance is mostly the same between the available miui roms as they are based on one another
The only issue i found with this phone is the mic quality is just HORRIBLE in video recording. Some other people have also had problems while on calls. I also have issues with my Sandisk Ultra MicroSD 128GB card because it gets unmounted about 5 times per day, however I dont know if its the phones fault or the cards fault yet.

 

[Jujudemetz]

Thanks for reply!

Good for temperature, I'll play lot of with emulator, good for no throttle (especially with Drastic)

I have a small amount of feedback about the sd card problem (in forums), maybe a hardware failure from your phone? I'd a Samsung Evo+ 128Gb card, I'll say if I had the same matter or not (when I'd receive my phone).

I prefer horrible mic quality rather bad screen qualité.. so, what do you tink about display? brightness and especially contrast? For color, it can be adjust with a software.

It's difficult to find another phone with this level of performance, in 5".

 

[Jujudemetz]

EDIT: For contrast ratio, it's 300 better than my Huawei (720), that I found already good. Same for brightness ratio, 250 better.

And is there any overclock possibilities?

 

[pilililo2]

The display is really good, really high brightness and low brightness, however the protection of the screen is rather bad. Got a few scratches in the first week while I waited for the tempered glasses to arrive...

About the overclock possibilities there will probably be, because its a snapdragon processor, however right now you wont need it and without a custom kernel its rather hard.

 

[Jujudemetz]

With emulation, we always want much more power^^ But before I'll try^^

Yeah the screen is pretty fragile, I'd bought a glass at same time with the phone.

Thanks for your reply!

 

[pilililo2]

However the audio recording quality is a known bug (ignored by xiaomi devs...) but there are already a few fixes available but you need to be rooted. Seems the problem is the noise cancelation algorithm is pretty ****** and makes the sound quality terrible...

Ill be buying a samsung evo+ microsd card to see if its my phones problem or the card problem soon

 

[Jujudemetz]

Yeh, I'd bought mine card in a Deutschland Market 29€, it's really cheap.

My Redmi will be rooted, have you any link for the poor audio recording quality? (if any fix ll be available)

 

[pilililo2]

This should fix it according to some people. I have yet to try it. I will probably try it in a few days

http://en.miui.com/forum.php?mod=viewthread&tid=348078&page=9#pid8268361

 

[Jujudemetz]

Thanks!

 

[Jujudemetz]

When I appiles the zip file with TWRP, and I update rom (no data loss), will I must applies again zip file?

 

[pilililo2]

Yes because the ROM update rewrites /system so the patch is overwritten also. So yeah you should reapply the patch after each update in theory. I will try it in a few days, please post your experience if you try it

 

[Jujudemetz]

Okay!, just applies the zip file (fix) after update rom with his zip file in the same menu, procedure is not long.

I suppose need to wipe cache and Dalvik cache before any update? (weekly update)

And then, have you make a post for your sd card problem?

 

[pilililo2]

Wipe cache/dalvik should be done after every weekly update to keep system as clean as possible even after dirty flashes.
I filed a bug report but im not sure if its the cards problem or the phones problem so I will buy a new card, Samsung EVO+ 128GB and see if that one has the problem or not. I just RMA'd my old one back and should receive the new one tomorrow or wednesday.

 

[Jujudemetz]

I suppose there are no important data in dalvik cache..

Have you try to test your card with H2testw (for exemple, with Windows)?

 

[pilililo2]

Yes, r/w speeds are very good. 90MB/s read and 31 MB/s write but the thing is I think some sectors are dead...

 

[Jujudemetz]

This software write and read on all card's sectors. If anything is wrong I think that software is able to detect it (therefore, I think it erase all data..)

 

[Jujudemetz]

Hi!

I'd just receive my phone, I test sd card all afternoon, and no matter with it