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Lenovo ZUK z1 is worth or not

Hi,
I have read the comments in amazon and also seen the reviews of Lenovo ZUK Z1 indian unit.
i found there are some issues like :-
-near the home button right side led light is not working properly.
-there are some heating issues in normal usage also.
-it hangs when we are in a call and there is only one way i.e. reboot of device.
-i also found comments saying that there is much difference between indian unit and other unit.
According to specs the hardware is realy good in this price segment but still some comments are saying its not worth to buy it.
Can anyone suggests wether i should go for Lenovo ZUK z1 (indian unit) or not.

I'm fairly happy with my ZUK Z1! I myself dide any of the issues you described, though I did have a major battery issue which I had to get fixed. Much more detail below;
The capacitive buttons' LED lights are just small white dots - they are a bit dim and hard to see outside (I believe that's just the way they are on the device). Regardless they do work fine - though I personally prefer on-screen buttons (navbar), which is an awesome option on Cyanogen which I do use (together with the physical home button). Phone does not feel hot to me (compared to other Android I tried - such as Sony Xperia Z3 Compact and LG G4 which did get confidently hotter). Calls work fine. I have no experience at all with the Indian version, I just had the International version with Cyanogen OS.
Now the problem I did have was that the battery my device came with was screwed up. The phone would turn off at random times and often display inaccurate battery percentages (e.g. fluctuating percentages, or phone displaying 1% for hours). It was really bad, a serious fault. Thankfully I was able to get it fixed for free thru warranty - since I bought it from a local store with 1 year warranty coverage (which was extremely useful for once). They replaced my battery for free and now it works great!
So that being said - there is indeed always a risk of getting a device with a hardware fault. Budget devices like this may be more prone to QA issues but remember that devices of any type or price occasionally have unit faults like that. Also keep in mind that people who have these issues are more likely to shout online than people who don't.
Overall though - I am quite happy with this device. It is fast and snappy, the battery life is indeed very good (lasts me a day and a half of fairly heavy usage) and I also like the fingerprint sensor (though I've had some mixed results with it. My tip is to make sure you initially scan your finger as best and fully as you can). I like the stock+ Android feel with Cyanogen OS (though Cyanogen are taking their sweet time with the Marshmallow update for this device! Though there are good custom ROMs for this device including CM13). I can recommend it.
If you can get it with warranty I say it's really a good choice, especially as a decent warranty can remove your worries. If I'd consider another device it would Xiamoi Redmi 3 Note Pro, which has similar specs but with a newer, better more efficient Snapdragon chip. There is also the ZUK Z2, but I think it's a shame that it has a smaller battery.

It's a decent phone but I wouldn't recommend it. A lot of people have problems with the home button (mine included) the fingerprint scanner doesn't work anymore. Cos has some nice features but the security patch is from last month and still no word on when we receive marshmallow.

My 2 cents, do yourself a favor, forget this phone unless it's free or very good bargain, it was promising at the start, end up as nightmare for most owners, just read some of the thread, every components has some issues, sound, GPS, home bottom, screen, battery, charging, COs patches, you name it.

Yeah, this phone turned out to be a huge disappointment. I faced issues with the original unit as well as the replacement unit. Eventually, I returned it and got myself a refund.
1. Back button led is dimmer than the menu button led. This is really annoying if you're used to the capacitive buttons. Even though it's a mid-range phone, this is not something that I'd expect because Rs.13,500 is still a good amount of money.
2. The phone has very obvious heating issues, especially near the top. Even when idle, temps refused to drop below 37-38 degrees. While charging, it was easily crossing the 50 degree mark. While running apps, it was crossing 60 degrees. My first unit became warm in my pocket for no reason at all.
3. The replacement unit that I received had vibration issues. The vibration kept turning off randomly. It used to turn back on after a few seconds.
4. Adaptive brightness is very slow. It takes a good 3-4 seconds for the ambient sensor to recognize the change in light intensity. I turned it off immediately.
5. Double tap to wake stops working after some time and you have to soft reboot the phone to get it to work again. However, I did not face this issue with the replacement unit.
6. The fingerprint sensor is not really as accurate and fast as the company claims it to be. The fact that you have to press the home button to wake the phone first adds to the time taken to unlock the phone. The fact that the home button isn't exactly soft does not help. More often than not, I had to keep my finger placed on the home button even after waking the device just to get it to recognize my fingerprint.
7. This one's a minor con but the ZUK printed below Lenovo on the back was slanted and not aligned perfectly below Lenovo. The print also appeared cheap and looked like it will come off pretty easily.
Considering the OPO has pretty much the same specs, I don't understand why the ZUK Z1 is plagued with so many issues. Also, in all the online reviews, the international version of the phone didn't seem to have all the above issues. Kinda makes me wonder if Lenovo has cut corners for the Indian launch of the phone, hence, the lower than the international version pricing.
Honestly, at this point, there's not much point in buying this phone. There are better and cheaper options available. Not to mention, some great phones will be coming out in the next couple of months, so it'd be better if you're willing to wait.

karthiksha said:
zuk z1 international version same in India ?
indian unit zuk z1 model is "z1221" its is same international version ???
any hardware changes in Indian units ??
why Indian unit having lenovo logo,zuk logo & other information in back side.. ?
but in international version only zuk logo on back side..
in Facebook and other site - my mobile recognized as "Sony xperia z1" anybody facing this problems ??
anyone using volte ?? zuk z1 have volte ??
how to check support mobile connectivity information like gsm band,lte band ?
Click to expand...
Click to collapse
Mine is also showing up as a xperia z 1

very happy with this phone. after a day's work, i still have about 50% of juice. I've had xiaomi, LG, Xperia in the past. this phone just rocks.
using zuk z1

wouldnt recommend. breaking home button and missing software support and updates ... if my homebutton is broken i will swap it at amazon und buy another phone.

anybody solved the problem of failed recognition (zuk z1 = sony xperia z1). is it possible that that is the reason for google play store some apps show me that my device is not supported?

Disappointed with my ZUK Z1

I've been the owner of 2 ZUK Z1 during 1 month, running Cyanogen 12. Problems with Network connection, GPS and hands free through Bluetooth. since I usemy phone with dual Sim for work&personal, I need it working 100%. Because of those issues, I flashed CM13 ( not working after flashing gapps) and finally resurrection Remix ROM. It didn't solve the Bluetooth problem and battery drains quite fast and phone is too warm. I even flashed last update (June 18th) but heat and battery problem still the same(only solved rooting use with June 16th version)
I came from a Jiayu S3 and I've just confirmed I didn't take a good decision buying those ZUK Z1. I'll have to look for aHuawei or Xiaomi mobile phone or is anybody happy with ZUK Z1? running which ROM?
Thank you for your help

If a rom isn't working for you it's not directly the Roms fault... I believe it's yours
Using nuclear and I'm totally happy. But none of those cm13 based Roms will fulfill your needs because dual sim functionality isn't fully implemented.

I have never had any of those problems in 6 months of using my ZUK, maybe you just got a bad one. Did you try contacting your seller for replacement?

I have mine since October and so far it works pretty well. I have a sot of 5 hours and still have enough energy left to easily reach the end of the day. GPS works fine for me I use it every week. No overheating issues so far although the phone can get really hot if the sun shines directly on it for a longer period but no problems when I use it or when it's in my pocket.
The only things that I dislike is the wide of the phone it's just to big for me (I have small hands). The camera is not that great with low light conditions, and still no marshmallow update, that's it

Love it despite its weaknesses
I ordered my Zuk Z1 back in October 2015. I use my phone with a professional sim in addition to my personal one which handles the 4G connection (note: both sim cards cannot offer data/4G). I have been running CyanogenOS exclusively because of Good Technology (incompatible with rooted devices). I do not concur with your opinion: COS 12.1-YOG4PAS9IG is rather mature. The network connectivity issues you are facing may be due to the lack of LTE band 20 (800MHz) support. I do not face any severe issues. I would certainly appreciate if it switched from 3G+ back to 4G faster than it does. WiFi 2.4 and 5.0Ghz perfectly work without any drop. GPS does work too, though it may take time to synchronize on rare instances. Bluetooth audio (streaming music to headphones, speakers) works perfectly although I cannot comment for the hand-free function (microphone) which I refuse to use for safety reasons. Battery runtimes are really great if you are not maxing out the brightness level. In my experience, battery drains are not linked with COS but third-party apps. I did not identify any heating issues : temperature is reasonable. Software support is great (about one update every two months) although people complain about COS13/Marshmallow being unavailable (June 2016). Annoying bugs (e.g. broken screen rotation) have been phased out quite quickly. I am really happy with this phone.
Good: nice runtimes (a full day) thank to the 4100mAh battery, the SD801 CPU is fast enough for my use, 3gb of RAM and 64gb storage are generous enough, decent 1080p screen but not best in class (compared with Amoled or Sony Triluminos), CyanogenOS is rather nice compared with stock 5.1.1
Bad: camera is mediocre, hardware button are not properly located and cannot be reversed (I disabled them by enabling the on-screen navigation bar), the fingertip reader sometimes fails to recognize your tips (fairly rare but worth mentioning), no sdcard reader.
Ugly: lack of LTE band 20 (800MHz) support

I'm trying again with my Z1. After original COS (GPS and Bluetooth issue), I tryed last Resurrection ROM (overheating and battery drain), I'm trying Cyanogrnmod. I had some issues with it when flashing Google apps (ARM - 6.0 - nano) and I got continuously error messages from google apps. I did wipe data/Dalvik after installing ROM and GApps but I always got this problem. I flashed everything again and it finally worked ( I don't know if anybody else is experiencing the same). Now running CM13 I will need a few days to evaluate it. For the time being no Overheating/battery drain problem at all. I still have to check deeply GPS/Bluetooth and rest of things. It seems it works properly...
If it fails finally (I hope not...) I will try nuclear ROM as adviced by some colleagues.
I'll keep you posted.
Thank you for your support

You need to understand that battery drain is caused by 3rd apps. Install PowerPRO and set home/work/outside modes. When i don't play any game then my zuk keeps alive for 2-3 days easy

Punisher66 said:
I've been the owner of 2 ZUK Z1 during 1 month, running Cyanogen 12. Problems with Network connection, GPS and hands free through Bluetooth. since I usemy phone with dual Sim for work&personal, I need it working 100%. Because of those issues, I flashed CM13 ( not working after flashing gapps) and finally resurrection Remix ROM. It didn't solve the Bluetooth problem and battery drains quite fast and phone is too warm. I even flashed last update (June 18th) but heat and battery problem still the same(only solved rooting use with June 16th version)
I came from a Jiayu S3 and I've just confirmed I didn't take a good decision buying those ZUK Z1. I'll have to look for aHuawei or Xiaomi mobile phone or is anybody happy with ZUK Z1? running which ROM?
Thank you for your help
Click to expand...
Click to collapse
Just flash gapps immediately after cm13 before restarting

Does cm13 have double tap to wake??

No. It's there in the settings. But it doesn't work

does aroma gapps work with cm13 snapshot?

download Naptime from app store

nuclear rom is pretty nice and battery friendly

Looking for a successor or upgrade for my Samsung Galaxy Note SM-P900

Hello World,
I have been working (and sometimes labouring) with my trusty work horse tablet SM P900 for almost 18 months now. And despite numerous disappointments (USB OTG w/o charging?!), it has been a mostly satisfying ride.
But since more than a few weeks now, I am starting to notice a slow down in memory intensive applications. It is almost as if the interal storage is acting up whilst reaching its EOL.
Actions that are not CPU intensive at all seem to be hanging, until all of a sudden they break loose and everything seems to be working normal again - until next time. And this happens more and more frequently. I tried to "trim" myself out of this mess, but by now I can't see any real difference here no more.
I tried in vain to find a replacement board for the internal storage, but alas replacement parts for the P900 seem to be very, very hard to obtain in the first place.
If anyone here has some useful suggestion, then I all ears (BTW: I have been using a slimed down custom ROM from day one and I am very picky about what apps I allow to run in the background. So its absolutely no SW issue).
Now I am also willing to entertain the idea of a new purchase, but try as I may I could not find a worthy successor to the P900. Samsung itself seems to have given all but up on this line and all the competition doesn't life up to my expectations.
These are:
1) It *must* be running on USB 5V power - anything else would be a deal breaker for me.
2) It should be running on an ARM CPU, but I could do with an Intel as well.
In any case, it is ARM based, then there has to be some custom Android ROM available for it (I hate stock bloated stock firmware).
It it is Intel, then it needs to have Linux support - somewhere out there!
3) The Display should be HD and somewhat comparable with the P900 specs.
4) The unit must be tablet capable, best with notes like stylus support. So now fixes keyboard and the like.
5) For ARM/Android based RAM must be 3GB minimum and internal storage 64GB min.
6) There must be an option to insert an extra micro SDXC card (deal breaker).
If anyone knows of a manufacturer who can match my desires, I am very much open to suggestions right now.

Potential 2nd Hand Purchase - hardware faults to look for?

Hi all,
so I'm looking at getting a 2nd hand Note 9 via a store with a warranty (not someone off the street, based in the UK).
I've been browsing trying to catch up on faults and things to look out for. I've noticed that there's at least a camera modal fault where at various levels of zoom the camera may cause noises and vibrations. This common?
Of course, there's always trying to check battery health too.
Otherwise, doesn't seem too much wrong hardware wise - have noticed a lot of people wanting to roll back to Oreo due to changes in UI? Also, looks like I need to check Knox in download mode at least.
Anything else I should keep an eye out for?
I do only get 6 months warranty and have been burnt via a Nexus battery failure on a second hand phone before that was just out of warranty to return it. I'm also coming from a Note 4 where I had a fault on the board which lead to it's replacement.

Spen remote function. mine s pen remote functionality not working right after latest pie OTA update. i am getting spen not connected error. so make sure spen is connected to phone and it's battery (Spen battery) last approximate 200 button clicks.

Worth buying the Xperia XZ2 in the late 2019?

I am interested in a buying a 2nd all-arounder phone that mostly ticks all key boxes and found out that the XZ2 is almost there.
As it will be my first Sony I need your experience with the device to decide to buying it or get a different one:
1) are there any serious issues that affect the device, maybe design issues or bad experiences with the device? Maybe display, speakers, or other hardware stuff to concern me?
2) I am interested in root-ability o this phone. Is I saw that there is some development. for this phone and since I am sort of experienced in Custom ROM stuff, I want to know if there are specific rooting issues? Are the valid options for un-bricking it, just in case. Is there a big amount of bricked phones?
3) how's sony with the updates for this device for official firmware updates?
4) is Google Camera functional after rooting?
5) is the phone performance still holding good in late 2019?
I appreciate your responses in any form or shape!

catalindobre said:
I am interested in a buying a 2nd all-arounder phone that mostly ticks all key boxes and found out that the XZ2 is almost there.
As it will be my first Sony I need your experience with the device to decide to buying it or get a different one:
1) are there any serious issues that affect the device, maybe design issues or bad experiences with the device? Maybe display, speakers, or other hardware stuff to concern me?
2) I am interested in root-ability o this phone. Is I saw that there is some development. for this phone and since I am sort of experienced in Custom ROM stuff, I want to know if there are specific rooting issues? Are the valid options for un-bricking it, just in case. Is there a big amount of bricked phones?
3) how's sony with the updates for this device for official firmware updates?
4) is Google Camera functional after rooting?
5) is the phone performance still holding good in late 2019?
I appreciate your responses in any form or shape!
Click to expand...
Click to collapse
I like my still fast XZ2 with OmniROM 9.0

catalindobre said:
I am interested in a buying a 2nd all-arounder phone that mostly ticks all key boxes and found out that the XZ2 is almost there.
As it will be my first Sony I need your experience with the device to decide to buying it or get a different one:
1) are there any serious issues that affect the device, maybe design issues or bad experiences with the device? Maybe display, speakers, or other hardware stuff to concern me?
2) I am interested in root-ability o this phone. Is I saw that there is some development. for this phone and since I am sort of experienced in Custom ROM stuff, I want to know if there are specific rooting issues? Are the valid options for un-bricking it, just in case. Is there a big amount of bricked phones?
3) how's sony with the updates for this device for official firmware updates?
4) is Google Camera functional after rooting?
5) is the phone performance still holding good in late 2019?
I appreciate your responses in any form or shape!
Click to expand...
Click to collapse
1-some devices are affected from bad production including mine, ghosting on LCD below room temperature, horizontal static electric lines appearing after rubbing the screen, speakers may get temporary damage for no reason (can be fixed by opening the sim tray and pulling that paper in there and waiting a little) or can get permanently damaged if you overdrive them with something like xLoud easily, if you dont want a super slippery 200g heavy 1.1cm thick glass brick look somewhere else (buttons are jiggly too)
2-custom roms have problems with audio and camera and it'll take some time to get fixed and at the end there's the possibility of it not being better than stock camera (also typical sony drm stuff will be lost after unlocking the bootloader)
3-device getting regular security patches and will be updated to android 10 in early 2020 (keep your bootloader locked if you want OTA)
4-no, gcam requires full camera2api and raw support which isnt there on stock
5-performance is good probably due to having close to stock android
this is my first xperia and I'd not recommend this phone to anybody unless you are crazy about what is sony doing with their sony open devices project like the guy above martin

Faruk.ErdaL said:
1-some devices are affected from bad production including mine, ghosting on LCD below room temperature, horizontal static electric lines appearing after rubbing the screen, speakers may get temporary damage for no reason (can be fixed by opening the sim tray and pulling that paper in there and waiting a little) or can get permanently damaged if you overdrive them with something like xLoud easily, if you dont want a super slippery 200g heavy 1.1cm thick glass brick look somewhere else (buttons are jiggly too)
2-custom roms have problems with audio and camera and it'll take some time to get fixed and at the end there's the possibility of it not being better than stock camera (also typical sony drm stuff will be lost after unlocking the bootloader)
3-device getting regular security patches and will be updated to android 10 in early 2020 (keep your bootloader locked if you want OTA)
4-no, gcam requires full camera2api and raw support which isnt there on stock
5-performance is good probably due to having close to stock android
this is my first xperia and I'd not recommend this phone to anybody unless you are crazy about what is sony doing with their sony open devices project like the guy above martin
Click to expand...
Click to collapse
I'm sorry to hear that you got a faulty unit.
Did you try to RMA it?
Because I never had such issues, except touch issues in Android 8, which got 90% fixed now (Sometimes while I super fast do swipes on the keyboard it may not recognize only a single swipe at the beginning of the writing).
Camera and Audio are work in progress on the custom roms based on sony open devices project.
SODP is an isolated sony employee team in the sony company + volunteers which need to implement everything by themselves without access to the stock source code (but with access to the closed source Qualcomm source code and documentations).
The camera doesn't degrade on unlock on your stock firmware, so you can freely continue using the stock firmware until the SODP camera reaches a equal or better quality.
(Since SODP supports the entire Camera2API with RAW and GCAM support to raise the quality it may become better than stock.)
And the performance is like stock on SODP.
My benchmark shows the same values like stock, too and you don't have bloat/stock apps preinstalled without the possibility to remove them without root.
PS: The SODP based custom roms are not affected by DRM, since they are a reimplementation of the hardware drivers, there isn't any usecase for DRM keys.