Question POCO F3 Warranty - Xiaomi Poco F3 / Xiaomi Mi 11X / Redmi K40

If I use ADB to remove bloatware on the F3, will I lose my warranty? Is the Xiaomi ADB official (from Xiaomi)? Do I also lose my warranty if I unlock the bootloader and install a custom ROM? If not does Xiaomi say so on their website? What is the difference between using ADB and just deleting them manually? Thanks!

You will not use your warranty by using adb to remove bloatware. However you do waver your warranty by unlocking the bootloader to put a custom ROM on it. However you can theoretically still get a replacement despite this wavering of a warranty

Robert314 said:
You will not use your warranty by using adb to remove bloatware. However you do waver your warranty by unlocking the bootloader to put a custom ROM on it. However you can theoretically still get a replacement despite this wavering of a warranty
Click to expand...
Click to collapse
Thanks! What do you mean theoretically? Can I just install MIUI again and lock the bootloader and sent it for warranty, without them finding out that I unlocked it?

Bonondo said:
Thanks! What do you mean theoretically? Can I just install MIUI again and lock the bootloader and sent it for warranty, without them finding out that I unlocked it?
Click to expand...
Click to collapse
You should be find. I have never had a Xiaomi and so didn't know how supportive they are. The official advice by Xiaomi is here:
What do you need to know about unlocking?
First and foremost you can only unlock your own device. This means the unlocking tool you downloaded must be logged in with the same Mi account on your device. One Mi account could only unlock one device within 30 days
Isn't locking bootloader against Mi's 'geek' spirit?
Locking bootloader is aimed to provide a better user experience, which we've been trying to do the whole time. In the meantime, we've provided an unlocking tool for senior users who know their ways around flashing and tweaking their devices.
The unlocking procedure will need Internet access to get the unlocking password. Also, the Mi Account logged in on the Mi phone and the unlocking tool needs to be the same. Otherwise, the unlocking request will be denied. This will ensure that ill-intentioned people will not get access to your personal data.
Click to expand...
Click to collapse

Bonondo said:
Thanks! What do you mean theoretically? Can I just install MIUI again and lock the bootloader and sent it for warranty, without them finding out that I unlocked it?
Click to expand...
Click to collapse
And that's where I come in.
I sent my Xiaomi Mi 9T Pro as a guarantee having had the precotion of flashing the global rom and re-locking the bootloader (I had a problem with my antenna, I received nothing).
They supported my Mi 9T Pro without any problem

Related

Is Mi Unlock really needed to unlock bootloader?

I have searched for a very long time how to unlock the bootloader to this phone. What I came across was the proper way to unlock the bootloader, using Xiaomi's unlocking service. This way tends to take around a week to actually unlock your phone. I am far too impatient for this and have yet to find a better option to get my phone's bootloader unlocked. Is there any better way to do this?
yayimathrowaway said:
I have searched for a very long time how to unlock the bootloader to this phone. What I came across was the proper way to unlock the bootloader, using Xiaomi's unlocking service. This way tends to take around a week to actually unlock your phone. I am far too impatient for this and have yet to find a better option to get my phone's bootloader unlocked. Is there any better way to do this?
Click to expand...
Click to collapse
No, you'll have to be patient.
For some reason, mine came unlocked. I bought it from the Xiaomi Ali express store.
I want to buy this phone but am wary because of my past experience with Huawei's locked bootloader, and their requirement to go through them to unlock; which they discontinued right after I bought the damn thing!
This required a payment (about $25 iirc) to a third party in order to get an unlock code.
Is this something I should be worried about with Xiaomi phones?
TiTiB said:
I want to buy this phone but am wary because of my past experience with Huawei's locked bootloader, and their requirement to go through them to unlock; which they discontinued right after I bought the damn thing!
This required a payment (about $25 iirc) to a third party in order to get an unlock code.
Is this something I should be worried about with Xiaomi phones?
Click to expand...
Click to collapse
This shouldn't be a concern for now. Xiaomi isn't planning to restrict unlocking the bootloader. Another thing you should consider is that Redmi note 8 pro gets easily bricked by flashing custom twrp, magisk, etc. but it's not easily recovered as it requires xiaomi authorised account.
zaqm said:
This shouldn't be a concern for now. Xiaomi isn't planning to restrict unlocking the bootloader. Another thing you should consider is that Redmi note 8 pro gets easily bricked by flashing custom twrp, magisk, etc. but it's not easily recovered as it requires xiaomi authorised account.
Click to expand...
Click to collapse
Thanks for that info! I'm thinking I'll go with my other phone choice, as I like to mess around with all that stuff, and custom ROMs.
Can someone explain how is it possible that after unlocking the phone and rooting,it still shows my phone is locked and secured?
ariber14 said:
Can someone explain how is it possible that after unlocking the phone and rooting,it still shows my phone is locked and secured?
Click to expand...
Click to collapse
You are using the stock rom, right? This is a false alarm. If you can flash modules and edit system files you are rooted for sure.
zaqm said:
You are using the stock rom, right? This is a false alarm. If you can flash modules and edit system files you are rooted for sure.
Click to expand...
Click to collapse
Yes i'm on stock rom. And of course i'm rooted.
spikesmonster said:
For some reason, mine came unlocked. I bought it from the Xiaomi Ali express store.
Click to expand...
Click to collapse
That's a serious red flag. Make sure you flash every possible firmware from the stocks here...
But if I were you, I'd return it and get it retail properly. Ali Express is notorious for vendors that put spyware and other ****e on their phones prior to shipping.
I got a proper Redmi Note 5 Plus (Vince) once, and retail was supposed to have a locked bootloader in the same fashion as this phone. On Redmi 5, however, there was an even cooler known problem where they would keep people's bootloaders locked, but flash malicious firmware using a testbed by taking the phones apart. So people would receive their Redmi 5's from Ali Express bugged and they would have to wait out those weeks to unlock it and flash clean images.
On an unrelated note, I did use an exploit on that MIUI version by creating two accounts, logging off, signing off, I don't remember. But I unlocked the bootloader the day I got my Vince. I'm not sure if this will work anymore. Not that I needed to. Again, I would never get a phone of Ali Express.
dimapoter said:
That's a serious red flag. Make sure you flash every possible firmware from the stocks here...
But if I were you, I'd return it and get it retail properly. Ali Express is notorious for vendors that put spyware and other ****e on their phones prior to shipping.
I got a proper Redmi Note 5 Plus (Vince) once, and retail was supposed to have a locked bootloader in the same fashion as this phone. On Redmi 5, however, there was an even cooler known problem where they would keep people's bootloaders locked, but flash malicious firmware using a testbed by taking the phones apart. So people would receive their Redmi 5's from Ali Express bugged and they would have to wait out those weeks to unlock it and flash clean images.
On an unrelated note, I did use an exploit on that MIUI version by creating two accounts, logging off, signing off, I don't remember. But I unlocked the bootloader the day I got my Vince. I'm not sure if this will work anymore. Not that I needed to. Again, I would never get a phone of Ali Express.
Click to expand...
Click to collapse
I don't know about spyware but they mainly unlock the bootloader on china variant to flash the global rom and sell it as a global variant. Later the user receives an update notification and installs the update and voala you get your device bricked.
zaqm said:
I don't know about spyware but they mainly unlock the bootloader on china variant to flash the global rom and sell it as a global variant. Later the user receives an update notification and installs the update and voala you get your device bricked.
Click to expand...
Click to collapse
Yes, once in a while they do it just for the sake of putting on a "better" ROM. Some of those Ali Express Note 5's reportedly came with even beta ROMs.
I'm saying just to exercise caution, is all. But a different ROM that would receive the wrong OTA sounds just as bad. I've never even thought about that scenario...
dimapoter said:
Yes, once in a while they do it just for the sake of putting on a "better" ROM. Some of those Ali Express Note 5's reportedly came with even beta ROMs.
I'm saying just to exercise caution, is all. But a different ROM that would receive the wrong OTA sounds just as bad. I've never even thought about that scenario...
Click to expand...
Click to collapse
Fortunately, that has not been the case and I've been able to install several updates to the global rom since purchasing.

Get Warranty back again

Hi guys,
I'm using Gingko MIUI11 official with Bootloader unlocked and rooted, also Orange fox installed. As per invoice my device is still under warranty. But as I've unlocked bootloader, give root access also using a custom recovery what should I make sure before visit Service Center. As I'm facing proximity sensor issue and I've troubleshoot and found its hardware issue. So before visiting service center do I need to clean flash official MIUI again, lock bootloader again? Any suggestion please. As its my primary device I just don't want to clean flash. Is there anyway or advice? Or there is nothing to do
Regards
The only way to get back under warranty is to clean flash and relock bootloader
Sent from my Redmi Note 8 using Tapatalk
Superraju said:
Hi guys,
I'm using Gingko MIUI11 official with Bootloader unlocked and rooted, also Orange fox installed. As per invoice my device is still under warranty. But as I've unlocked bootloader, give root access also using a custom recovery what should I make sure before visit Service Center. As I'm facing proximity sensor issue and I've troubleshoot and found its hardware issue. So before visiting service center do I need to clean flash official MIUI again, lock bootloader again? Any suggestion please. As its my primary device I just don't want to clean flash. Is there anyway or advice? Or there is nothing to do
Regards
Click to expand...
Click to collapse
i think i read some where that unlocking and flashing eumiui do not break warranty bcz its back by miui, just don't use root,
Redmi 4A abdal said:
i think i read some where that unlocking and flashing eumiui do not break warranty bcz its back by miui, just don't use root,
Click to expand...
Click to collapse
Unlocking bootloader breaks warranty
Sent from my Redmi Note 8 using Tapatalk
Wills_X said:
Unlocking bootloader breaks warranty
Sent from my Redmi Note 8 using Tapatalk
Click to expand...
Click to collapse
ok i misunderstood, that's what i read
, "Our ROMs were approved by official EU distributor ABC Data to not void warranty for devices sold by them! (Of course, officially unlocked BL and no ROOT installed)"
i remember xiaomi india tweeted : Unlocking bootloader does not breaks warranty
Wills_X said:
Unlocking bootloader breaks warranty
Sent from my Redmi Note 8 using Tapatalk
Click to expand...
Click to collapse
no it dosent break
---------- Post added at 01:44 PM ---------- Previous post was at 01:42 PM ----------
Superraju said:
Hi guys,
I'm using Gingko MIUI11 official with Bootloader unlocked and rooted, also Orange fox installed. As per invoice my device is still under warranty. But as I've unlocked bootloader, give root access also using a custom recovery what should I make sure before visit Service Center. As I'm facing proximity sensor issue and I've troubleshoot and found its hardware issue. So before visiting service center do I need to clean flash official MIUI again, lock bootloader again? Any suggestion please. As its my primary device I just don't want to clean flash. Is there anyway or advice? Or there is nothing to do
Regards
Click to expand...
Click to collapse
no you cant claim warranty,
you already given root access to RN8,
unlocking dont void warranty but root will surely end warranty
Superraju said:
Hi guys,
I'm using Gingko MIUI11 official with Bootloader unlocked and rooted, also Orange fox installed. As per invoice my device is still under warranty. But as I've unlocked bootloader, give root access also using a custom recovery what should I make sure before visit Service Center. As I'm facing proximity sensor issue and I've troubleshoot and found its hardware issue. So before visiting service center do I need to clean flash official MIUI again, lock bootloader again? Any suggestion please. As its my primary device I just don't want to clean flash. Is there anyway or advice? Or there is nothing to do
Regards
Click to expand...
Click to collapse
don't try to lock bootloader, you'll brick your device,
just unroot and claim warranty
Ok sorry for so late... I've visited to my nearest Service center and repaired my device and Rooting or Unlocking bootloader doesn't void warranty said by the Xaiomi Service Center. Thanks to all
Redmi 4A abdal said:
don't try to lock bootloader, you'll brick your device,
just unroot and claim warranty
Click to expand...
Click to collapse
I've locked unlock my device bootloader 4times.. and nothing wrong happen as you are saying

Question Disadvantage of Unlocking bootloader

What are the disadvantage of unlocking bootloader? Is there any reason to keep it locked? Do you lose anything by unlocking?
CrushedMango said:
What are the disadvantage of unlocking bootloader? Is there any reason to keep it locked? Do you lose anything by unlocking?
Click to expand...
Click to collapse
https://forum.xda-developers.com/t/4288121/post-85137959
Read step 7 and step 20.
Honestly the biggest drawback is that generally no L1 support after unlock, but in this phone that doesn't happen, so I would say No drawback at all
Ok thanks. I was thinking of trying miui but I didn't wanna wait 7 days once I decide miui isn't for me. I will unlock as soon as I get the phone
CrushedMango said:
Ok thanks. I was thinking of trying miui but I didn't wanna wait 7 days once I decide miui isn't for me. I will unlock as soon as I get the phone
Click to expand...
Click to collapse
No, you must wait 7 days to unlock after you submit the request to unlock bootloader. So you still need to bear with MIUI for at least 7 days.
There's no shortcut (yet).
Most banking apps will not work with unlocked bootloader. This apps consider unlocked bootloader as a root of the system, so a lack of security.
CrushedMango said:
What are the disadvantage of unlocking bootloader? Is there any reason to keep it locked? Do you lose anything by unlocking?
Click to expand...
Click to collapse
The warranty will be voided if bootloader unlocked
Alin45 said:
Most banking apps will not work with unlocked bootloader. This apps consider unlocked bootloader as a root of the system, so a lack of security.
Click to expand...
Click to collapse
Yes that is true but it's still possible to pass safety nets but as long safety nets are passing u should still be able to use banking apps even if running on custom ROM
Alin45 said:
Most banking apps will not work with unlocked bootloader. This apps consider unlocked bootloader as a root of the system, so a lack of security.
Click to expand...
Click to collapse
theres a method to use baanking apps with the bootloader unlocked?
thewitchmerlin said:
theres a method to use baanking apps with the bootloader unlocked?
Click to expand...
Click to collapse
As long as your phone stay not ROOTED. Don't get miss leading about Unlock Bootloader and ROOT.
Austinredstoner said:
The warranty will be voided if bootloader unlocked
Click to expand...
Click to collapse
This is not always true.
Xiaomi/Redmi/Poco in many countries still have warranty after bootloader unlocked.
Check the local Xiaomi/Redmi/Poco policy yourself.
pl1992aw said:
This is not always true.
Xiaomi/Redmi/Poco in many countries still have warranty after bootloader unlocked.
Check the local Xiaomi/Redmi/Poco policy yourself.
Click to expand...
Click to collapse
Yes but if u install any custom ROM it will get voided for sure
ndez said:
As long as your phone stay not ROOTED. Don't get miss leading about Unlock Bootloader and ROOT.
Click to expand...
Click to collapse
Firstly is SafetyNet check. This is the first thing for banking apps.
Some ROMs did not pass SafetyNet out of the box and they have to use Magisk and modules to make them pass. This kind of ROMs mostly will have issues with bank apps.
To sum up:
Bootloader unlock: you can use bank apps, but sometimes not.
Root: you can use bank apps with some adjustments, but sometimes not.
ROMs: you can use bank apps, but sometimes not without the help of Root.
Try and error, life is just like this.
Austinredstoner said:
Yes but if u install any custom ROM it will get voided for sure
Click to expand...
Click to collapse
That is not totally correct either.
There are many cases that people had installed custom ROM and bricked their phone, but Xiaomi still give free warranty within the warranty deadline.
If you installed custom ROM and need Xiaomi warranty, simply return to MIUI and you still get Xiaomi warranty within deadline, if the policy said so.
pl1992aw said:
That is not totally correct either.
There are many cases that people had installed custom ROM and bricked their phone, but Xiaomi still give free warranty within the warranty deadline.
If you installed custom ROM and need Xiaomi warranty, simply return to MIUI and you still get Xiaomi warranty within deadline, if the policy said so.
Click to expand...
Click to collapse
Warranty good but even if it does get voided I will still unlock bootloader anyway because of custom ROM and stuff but it's cool that warranty does not get voided after unlocking bootloader
Austinredstoner said:
Warranty good but even if it does get voided I will still unlock bootloader anyway because of custom ROM and stuff but it's cool that warranty does not get voided after unlocking bootloader
Click to expand...
Click to collapse
Example as here:
https://forum.xda-developers.com/t/4264715/post-84877435
thewitchmerlin said:
theres a method to use baanking apps with the bootloader unlocked?
Click to expand...
Click to collapse
As I said, some bank apps can work. If ur bank app does not work, then the only way to use it is to root the ROM using Magisk (and some other specific magisk modules have to be installed if installing magisk only does not do the trick).

Question Xiaomi.EU - void warranty?

That is worth install that If I will purchase this phone and that is new?
void warranty? maybe If I locked the bootloader again on xiaomi eu that is okay?
Fast charging 33W works?
SlideCan said:
That is worth install that If I will purchase this phone and that is new?
void warranty? maybe If I locked the bootloader again on xiaomi eu that is okay?
Fast charging 33W works?
Click to expand...
Click to collapse
Firstly don't consider locking the bootloader once you've done any ROM modifications.
Secondly unlocking the bootloader doesn't actually void the warranty on a Xiaomi device so you should be fine. However it's up to the discretion of Xiaomi (i.e if you brick the device then that's your fault)
Robert314 said:
Firstly don't consider locking the bootloader once you've done any ROM modifications.
Secondly unlocking the bootloader doesn't actually void the warranty on a Xiaomi device so you should be fine. However it's up to the discretion of Xiaomi (i.e if you brick the device then that's your fault)
Click to expand...
Click to collapse
Why have a chance that I brick that?
Are you sure? I will maybe going to buy this on my country and some people told if I unlock the boot that is void the warranty..
You tried the eu rom?
SlideCan said:
Why have a chance that I brick that?
Click to expand...
Click to collapse
Look up "Xiaomi China Global bricked". You will find many cases, and not easy to unbrick.
SlideCan said:
some people told if I unlock the boot that is void the warranty..
Click to expand...
Click to collapse
You have to check Xiaomi/Redmi/Poco warranty policy in your country yourself. The regulation varies between countries and regions.
In many countries and regions Xiaomi/Redmi/Poco still have warranty coverage after bootloader unlocked, but there's some exceptions. Check it yourself on the official website.
SlideCan said:
Why have a chance that I brick that?
Are you sure? I will maybe going to buy this on my country and some people told if I unlock the boot that is void the warranty..
You tried the eu rom?
Click to expand...
Click to collapse
Just go buy the phone. It is worth it. Xiaomi EU is just as good as the newest chinese rom, and even somehow little better. So you kinda get the best.
pl1992aw said:
Look up "Xiaomi China Global bricked". You will find many cases, and not easy to unbrick.
You have to check Xiaomi/Redmi/Poco warranty policy in your country yourself. The regulation varies between countries and regions.
In many countries and regions Xiaomi/Redmi/Poco still have warranty coverage after bootloader unlocked, but there's some exceptions. Check it yourself on the official website.
Click to expand...
Click to collapse
But I installing the eu rom for the MI5S in the past and all works fine without bricked..
where is the "dangerous" process?
And maybe unlock the bootloader not void the warranty but if I install the EU rom that is void that?
SlideCan said:
But I installing the eu rom for the MI5S in the past and all works fine without bricked..
where is the "dangerous" process?
Click to expand...
Click to collapse
Relock bootloader with Xiaomi.eu ROM that was based on China ROM in your Global phone is dangerous.
You can try if you dare to risk it on your Poco F3. You have been warned.
The principle is: do not lock bootloader.
SlideCan said:
And maybe unlock the bootloader not void the warranty but if I install the EU rom that is void that?
Click to expand...
Click to collapse
Flash stock ROM back into phone, which makes phone looks identical to just after bootloader unlocked, so it's can still be under warranty, if you were able to flash it back.
There are exceptions that will still void warranty, read the policy yourself.

Question i heard something about bootloader un/relocking

is it true that relocking a unlocked bootloader erases everything, but you can re-unlock it ever again on xiaomi devices?
testask123 said:
is it true that relocking a unlocked bootloader erases everything, but you can re-unlock it ever again on xiaomi devices?
Click to expand...
Click to collapse
yep i already tried it
khazzey said:
yep i already tried it
Click to expand...
Click to collapse
there's no tool to re-unlock it? its forever locked?
testask123 said:
there's no tool to re-unlock it? its forever locked?
Click to expand...
Click to collapse
Just use xiaomi flash tool, as it can also re-lock your bootloader.
Hi,
I am new Poco F3 owner,
I got the Amazon black Friday deal £50 off,
my variant has 8gb of rom & 256gb of ram, all this for £269.00p,
what an Amazing price and also comes with 2 years warranty here in the UK.
I have been a LG users for many years, using the (G2, G4, and for now a G7) .
I have installed many custom roms on these devices over the last 8 years.
Unlocking/locking there bootloader have been relatively straight forward.
I asking the same question that I am sure has been asked many times before,
once my 7 days are up and i have unlocked my bootloader and i then lock it again,
but then further down the line i decide to unlock it again,
do i have to wait another 7 pointless days.
I'm loving the new poco F3, apart from the firmware is a bit restrictive,
hence why I'm unlocking the bootloader.
What a great community the F3 has , long may it continue,
regards,
Johnr64
johnr64 said:
Hi,
I am new Poco F3 owner,
I got the Amazon black Friday deal £50 off,
my variant has 8gb of rom & 256gb of ram, all this for £269.00p,
what an Amazing price and also comes with 2 years warranty here in the UK.
I have been a LG users for many years, using the (G2, G4, and for now a G7) .
I have installed many custom roms on these devices over the last 8 years.
Unlocking/locking there bootloader have been relatively straight forward.
I asking the same question that I am sure has been asked many times before,
once my 7 days are up and i have unlocked my bootloader and i then lock it again,
but then further down the line i decide to unlock it again,
do i have to wait another 7 pointless days.
I'm loving the new poco F3, apart from the firmware is a bit restrictive,
hence why I'm unlocking the bootloader.
What a great community the F3 has , long may it continue,
regards,
Johnr64
Click to expand...
Click to collapse
No, you only have to wait the first time.
This waiting time is not so pointless as it seems however. It is there to discourage a.o. the many traders flashing (often fake) 'global' roms on Chinese phones and selling them as genuine global models for extra profit. So in the end it's only for your protection, because flashing roms invalidates warranty.
so just to clarify there is no limit on unlocking and relocking this phone right?
testask123 said:
there's no tool to re-unlock it? its forever locked?
Click to expand...
Click to collapse
xiaomi unlock tool its infinite dont worry, but be extreme cautious when you are locking your bootloader make sure your are in your right stock rom and dont forget to unlock again when you are going to flash custom roms and recovery
To lock the bootloader you can simply use "fastboot oem lock" in fastboot mode. Note that doing so will (obviously) factory reset your phone.
user0u said:
To lock the bootloader you can simply use "fastboot oem lock" in fastboot mode. Note that doing so will (obviously) factory reset your phone.
Click to expand...
Click to collapse
ok, another question:
in the event where i lose my phone an unlocked bootloader can bypass any password protection if they have the knowledge right?
is there any way to protect the phone from this?
testask123 said:
ok, another question:
in the event where i lose my phone an unlocked bootloader can bypass any password protection if they have the knowledge right?
is there any way to protect the phone from this?
Click to expand...
Click to collapse
If you mean screen lock, yes they can bypass it. But they cannot get into your banking apps or others which have their own passwords.
If you are really keen on it, just lock the bootloader.

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