Poor wifi reception of ZUK Z1 vs Nexus 4

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gerardgerard

Member
Sep 27, 2015
26
9
Hi,

My ZUK Z1 european version has just arrived and I am noticing that it cannot take the 5Hz wifi when there is some distance in between. If it does it, it disconnects in seconds. It does connect to the 2.4Hz g without too many problems (some times even not this one). If I put only 5Hz networks, the same happens. Sometimes it doesn't see the signal at all.

This doesn't happen when I am next to the router. So, since the 5Hz deteriorates more with distance (AFAIK) what I'm describing shouldn't be surprising. My doubts are because with the nexus 4 (Android, not cyanogen) it grabs the 5Hz without any problem at exactly the same long distance (2 thin walls, few furniture in between), and I find very unlikely that the wifi chip of the nexus 4 is superior than the one of the zuk z1.

UPDATE:
It is very strange. With the ZUK, in front of the router I get 110 Mbps (5Hz, n-only), when I move to the room in question I get 3-4 Mbps only, so about to be disconnected.
With the nexus 4 (same 5Hz connection obviously), I get 50 Mbps when I am in front of the router AND when I am in the problematic room. How is that possible?

If I test connecting to the 2.4Hz (b,g,n), the nexus 4 gives the same 40-50 Mbps no matter the distance. I have to go to a very "protected" room to see a drop to ~15 Mbps, again showing no difference between the two bands.
If I test with the zuk, it gives 20 Mbps, if I move to the very "protected" room, I see a drop down to 0.3 Mbps

So, it is like the wifi is much better if you're in front of the router, otherwise is significantly worse? Is that feasible? Can it be a software problem?
 
Last edited:

Rom91

New member
Oct 16, 2015
4
0
Hello! first of all excuse my bad english

I received today me ZUK 1 and im having the same trouble, its impossible to use wifi without problems when you are in a different room from router, and especially when you put the smartphone in horizontal position ,grab it with two hands and cover the superior part with your hand, when i do this i simply lost the connection even if im in front of router. I come from HTCmania, a spanish forum of smartphone and we are few people with the same problem and is very frustating that there is no solution and noboy in Lenovo or ZUK says nothing about this trouble.
 

Africa2k2

Member
Oct 12, 2008
32
11
Me too. Wifi is very very very bad if you hand is in the top (camera zone). Horizontal, vertical, it does not matter if you cover the area with his hand, zasss wifi dies.

Sorry my very bad english.
 

dp12776

Member
Oct 16, 2015
27
5
Same problem here

I have the same problem as described. I have not noticed if my hand position affects it. My OnePlus one and my Sony Xperia Z1 compact both manage to hold on to the wifi in my bedroom albeit less than full signal. The Zuk z1 just keeps dropping off and sometimes doesn't find the wifi.
Have anyone contacted Zuk about this? Mine was bought through Spanish eBay but seems to have been sent to Spain from Germany.
Following the thread for a solution as this problem is a definite dealbreaker.

Daniel
 

gerardgerard

Member
Sep 27, 2015
26
9
Uau, I've just tested it and while it is unrelated to the problem that I say (this is, the ZUK receives the 5Hz band very bad it seems) it is completely true. While doing a wifi test (Wi-Fi Deadspot app), connected to the 2.4Hz, from 55 Mbps if I put the hand over the top part of the mobile it drops to 30, if I put the hand in the middle part of the back zone it drops to <5Mbps!!

*Having it over a table doesn't make a difference for me.

UPDATE: The measurements from this app seem very variable, based on other comments it doesn't seem to be related to the software but to the ZUK. Now the 5Hz band gives excellent results from the room where before it couldn't even see the wifi.

So it does seem capable, but VERY unstable I guess. Is this hope for waiting a software-based solution? Or we should mark this phone as a wifi-less phone ...
(damn ~_~ they sure knew about this from the units sold in China)

Me too. Wifi is very very very bad if you hand is in the top (camera zone). Horizontal, vertical, it does not matter if you cover the area with his hand, zasss wifi dies.

Sorry my very bad english.
 
Last edited:

dp12776

Member
Oct 16, 2015
27
5
2,4 ghz

Just checked and it turns out that my wifi is on 2,4 ghz. So I guess the conclusion is that the problem is unrelated to the frequency.
 

gerardgerard

Member
Sep 27, 2015
26
9
There are two problems:

Problem 1- Wifi drops when your hand is on the top of your phone, irrespective of the frequency
Problem 2- Wifi in the 5Hz is very unstable and/or much worse when compared with a nexus 4 phone (relevant provided it is an old phone), related to the frequency (or it seems so at least)

Just checked and it turns out that my wifi is on 2,4 ghz. So I guess the conclusion is that the problem is unrelated to the frequency.
 

I-Immortal

Senior Member
Nov 21, 2014
75
22
Lyon
I didn't noticed anything before i read this and tried to put my hand on the upper part of the phone : my WiFi connection instantly shut down even if I had 3bars over 4... So yeah there's a real issue with the WiFi antenna here :S (first real drawback I have with this device...)

Apart from that, I owned a Nexus 4 too just before this device and I personally have a better WiFi reception on my Zuk Z1 (one more bar for both 2.4 and 5Ghz bands) :)
 

xavieramoros

New member
Oct 18, 2015
4
0
I also have a Wifi problem with the international version of Zuk Z1.

Testing the Wifi with the App "Wifi DeadSpot" in both the Zuk and a Oneplus 1, the results are:
2m far from the router:
OnePlus1: 38Mbps (GOOD)
Zuk Z1: 9Mbps (AVERAGE)

10m far from the router:
OnePlus1: 22Mbps (GOOD)
Zuk Z1: 0.45Mbps (POOR)

In both cases the phone is in vertical and without touching it (holding it near the camera apparently really makes Wifi coverage worst)
If the Zuk is in horizontal position, the Wifi signals is also worst: 0,5-1 Mbps at a 2m distance.

I tried resetting the Zuk to factory settings and the results are the same, so I don't think it's a software issue. Could be a manufacturing defect or just a cheap wifi chip?
 

Klanac89

Senior Member
Sep 30, 2014
637
134
Wifi on the ZUK Z1 is better than Note 4, S6, Xperia Z3+ and Mi Note.

On some positions I don't get Wifi, with the Z1 2/4.
Speed up to 50Mbit/s over 2.4GHz. With 5GHz about 120 Mbit/s. I don't need more.
 

Teo128

Senior Member
Dec 13, 2013
124
17
37
Hello, I received my EU Z1 today and I'm coming from a Nexus 4 too. I don't have any trouble with 2.4ghz WIFI, the connection its perfect two stories under the router and I can say its as good if not better then the Nexus 4 holding it in any way. I think you got defective devices.
 

Hanswurst02

Senior Member
Aug 28, 2013
90
7
I hope your are right.
I'm considering buying this device. Would be great if other people could tell about their wifi reception.
 

tuatara42

Member
Oct 15, 2015
33
3
It's pretty random...
If i have the phone 3-4m from 2.4ghz router through a wall:
Keeping the Z1 in the same position, without touching it, WiFi reception varies from 2-4Mbps to 40Mbps (from test to test in Wi-Fi deadspot app). Can't predict when I get which speed. Mostly it's very low, though.
Disconnecting and reconnecting sometimes helps but mostly it doesn't. My old Huawei Y300 has a solid ~18Mbps when tested at the same spot.
Then again also the phone reception randomly drops from 3 bars to 1 to just go back up to 3 all within 1-2 seconds. (which might be unrelated but coincided with having higher Wi-Fi speeds)
Here's hoping for a software bug....
Cheers.

---------- Post added at 02:57 AM ---------- Previous post was at 02:37 AM ----------

There is one thing that is rather consistent though:
Whenever the display turns off during the Deadspot test, WiFi drops e.g. from 40Mbps to ~8Mbps. I first observed it by chance and then switched off the display on purpose several times while the app was running...
In the WiFi settings it's set to always keep on, so that shouldn't be the issue...
 
Last edited:

othe01

Member
Sep 17, 2015
48
13
@tuatara42

I think i noticed sth similar, i had map downloads for navigation, around 2gb of data, it was half done in a few minutes but when it gone into standby mode and i woke it up 10 minutes later it barely progressed, so that means the wifi must have been slower.

That gets me a bit of hope that it´s "just a software problem".
 

tuatara42

Member
Oct 15, 2015
33
3
I just tested the speed right next to the router:
Same speed, no improvement, 1-4Mbps.
Full speed with the Y300.
Actually I'm pretty sure WiFi was much better in the beginning, before the latest COS updates...
 

IceDBear

Member
Jul 18, 2010
28
11
COS could be part of the problem, with CynaogenMod on my old phone I have the same problem with wifi speeds when the screen is off.
 

SamSmiles

Member
Jul 5, 2015
30
5
I just did a rough test using Wi-Fi Deadspot. At about 7.5m, through four very solid brick walls, from my 2.4 Ghz router I got 32.49 Mbps with my Z1, and 27.74 Mbps with my old N4. So WiFi is fine for me.
 

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  • 3
    Here there is a youtube
    https://www.youtube.com/watch?v=tvxsm5_UyVE

    The ZUK service has forward me a software solution with two zip files, one big enough (900Mb) to mean a complete SO upgrade. I attach the instructions, good luck if you understand anything. I am sad but ZUK is not building a good reputation here.

    The good news is that apparently, someone believes this can be fixed by software.
    The bad news, it is an obfuscated procedure that I'd say it will break the cyanogen experience (and OTA's upgrade I guess).
    The second bad news is that if this is a software thing, I'd have guessed that they'd have contacted the CM people to release an urgent update, not that they'd provide isolated solutions. This way of doing things doesn't say anything good about the future.

    Honestly, don't know what to think. I am trying to return it to the ebay seller unless someone from Zuk or CM provides a clear answer in the following days.
    2
    Hi,

    My ZUK Z1 european version has just arrived and I am noticing that it cannot take the 5Hz wifi when there is some distance in between. If it does it, it disconnects in seconds. It does connect to the 2.4Hz g without too many problems (some times even not this one). If I put only 5Hz networks, the same happens. Sometimes it doesn't see the signal at all.

    This doesn't happen when I am next to the router. So, since the 5Hz deteriorates more with distance (AFAIK) what I'm describing shouldn't be surprising. My doubts are because with the nexus 4 (Android, not cyanogen) it grabs the 5Hz without any problem at exactly the same long distance (2 thin walls, few furniture in between), and I find very unlikely that the wifi chip of the nexus 4 is superior than the one of the zuk z1.

    UPDATE:
    It is very strange. With the ZUK, in front of the router I get 110 Mbps (5Hz, n-only), when I move to the room in question I get 3-4 Mbps only, so about to be disconnected.
    With the nexus 4 (same 5Hz connection obviously), I get 50 Mbps when I am in front of the router AND when I am in the problematic room. How is that possible?

    If I test connecting to the 2.4Hz (b,g,n), the nexus 4 gives the same 40-50 Mbps no matter the distance. I have to go to a very "protected" room to see a drop to ~15 Mbps, again showing no difference between the two bands.
    If I test with the zuk, it gives 20 Mbps, if I move to the very "protected" room, I see a drop down to 0.3 Mbps

    So, it is like the wifi is much better if you're in front of the router, otherwise is significantly worse? Is that feasible? Can it be a software problem?
    2
    Good Morning guys, this is my feedback of my new Zuk Z1 just received:
    The phone comes with YOG4PAS2NM from Amazon.
    I just try Wifi Connection in my kitchen (2 Walls from Router) and my bedroom (1 Wall from Router)

    -FACTORY ROM: (YOG4PAS2NM)
    @kitchen: One Hand (Phone in Vertical) Conexion is like my old SIII (Wifi show full rows).
    Two Hands (Phone in Horizontal) Conexion goes down (2-3 rows) and disconnects.
    @bedroom: One and two Hands Conexion is full rows.

    -FIRST UPDATE: (YOG4PAS2RM)
    @kitchen: One Hand (Phone in Vertical) Conexion is like my old SIII (Wifi show full rows).
    Two Hands (Phone in Horizontal) Conexion goes down (2-3 rows) and disconnects.
    @bedroom: One and two Hands Conexion is full rows.

    -UPDATE 2: (YOG4PAS2WM)
    @kitchen: One Hand (Phone in Vertical) Conexion is like my old SIII (Wifi show full rows).
    Two Hands (Phone in Horizontal) Conexion goes down (2-3 rows) and disconnects.
    @bedroom: One and two Hands Conexion is full rows.

    -UPDATE 3: (YOG4PAS34N)
    @kitchen: One Hand (Phone in Vertical) Conexion is like my old SIII (Wifi show full rows).
    Two Hands (Phone in Horizontal) Conexion goes down (2-3 rows) and disconnects.
    @bedroom: One and two Hands Conexion is full rows.

    -UPDATE 4: (YOG4PAS38J)
    @kitchen: One Hand (Phone in Vertical) Conexion is like my old SIII (Wifi show full rows).
    Two Hands (Phone in Horizontal) Conexion goes down (2-3 rows) and disconnects.
    @bedroom: One and two Hands Conexion is full rows.

    Conclusion, with all updates the Wifi behavoir is the same in all of cases. Few times I use the phone in horizontal position, maybe for me is not a big problem, I wish Zuk or Cyanogenmod solves this issue with Software Update (If this is caused by poor of wifi management).
    2
    So is the wifi bug affecting all ZUK Z1s ? Is there an official statement from Lenovo/ZUK that they are acknowledging this problem ?
    2
    I can say my wifi is worse than with my nexus 4.
    - I cannot connect to my 5 GHz wifi where I can with my nexus 4.
    - With my 2.4 GHz the wifi speed is worse than in the nexus.
    The two measures are in places where the wifi is far. That said, judging from coverage I should say I have a total coverage for the 2.4 GHz, but then again the speed is worse. If I do the measurements closer to the router, both mobiles give similar measurements if not better for the ZUK.

    *For my typical use I don't see the difference in speed, but I'm not really using the mobile when I am at home, just browsing and texting, so the impact is low.

    This is one problem, which one could argue this is because there is a cheap chip in the ZUK, but then there're users that claim their wifi is indeed better than with the nexus. Could anybody with both mobiles compare them in difficult positions? This is, going far from the router?

    Another problem is that covering the mobile from the superior part dramatically affects the wifi (doesn't seem to affect mobile data). This sounds like a hardware problem and everybody can imagine what would happen if a problem like this appears in the iphone 6 plus, right? People that claim that their ZUK is not affected by this, could they really cover their (top-part) mobile and measure the wifi with an app like "Wi-fi deadspot"?

    What is completely wrong is the silence from Lenovo-ZUK.