Network Fluctuating issue - Zuk Z1 Q&A, Help & Troubleshooting

Hello guys have been facing a very high network Fluctuation in my zuk z1 from today morning..
MY preferred data network ( 4G Jio) looses network for few mins and then again connects and it stay connected as long as I'm downloading something else the network disappears and comes back again after few mins..
Is this a software issue or something wrong with my phone hardware?
I tried multiple custom roms(Lineage 14.1, crdroid3.8, Zui,) with clean flash but still this issue persists..
Please provide any fix if possible.
Thanks

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Wow, this is ridiculous and why is this happening?

Please help:
I'm on CM9 19 6 nightly. Using Semaphore kernel without any modifications to the scripts.
The problem: My signal keeps on going out at regular intervals.
I've used XXJVU, DDJV5, XXJVT, KF1(Nexus modem for ICS) and various more. I stay on the modems for a week and then change to another one. The latest one is DDJV5 which I have been using since the past 2 weeks.
Tried all of the modems I could lay my hands on. Nothing works.
But the moment I come to work, the signal keeps fluctuating over the day. Sometimes it would be out for 10-15 minutes. When it's back, it would get back to giving -65 .. -71 dBm. It would stay like that for a few minutes and then it would be gone again for another 10-15 minutes or so.
It has turned into an OCD where I keep checking my signal.
This does not happen when I'm back home and then I'm back to getting good signal.
Yes, this looks to you like a locational issue. I thought so too. BUT, how did I get so good signal till a week back at work?
Question: What could have made this mess to my signal reception? How can I solve this?
No, all my syncs are OFF. I keep my 3G turned off and only use it once an hour or so for a few minutes. I don't use any signal consuming apps.
Also, sometimes the 3G would work even without the signal.
Another thing, sometimes there's a (x) sign at the signal bar thing and sometimes there is no (x) without bars.
As a cure for the OCD, I've taken an off from work today just to get some rest from checking my signal every now and then. And maybe find a solution.
I'm on Vodafone India.
Indians, I am on Vodafone India in Pune, Hinjewadi Information Technology park. Maybe Pune guys can help me out too?
maybe the phone changes the network mode.. 2g 3g or i dont know , try to put in in 2g only mode , or gsm only mode.
When the signal bar shows with a "x" it means the network is not available...go to settings and change the Network mode to "GSM Only". It will solve the fluctuating issue but network speed will be limited to 2G only.
Sent from my GT-i9100 equipped with Grenade Launcher and Remote Explosives
Thanks, let me try it out.
Where is the network changing option to GSM only in ICS?
Okay, I guess it's the 2G mode.
DD-Ripper said:
When the signal bar shows with a "x" it means the network is not available...go to settings and change the Network mode to "GSM Only". It will solve the fluctuating issue but network speed will be limited to 2G only.
Sent from my GT-i9100 equipped with Grenade Launcher and Remote Explosives
Click to expand...
Click to collapse
Is going to 2G mode my ONLY option?
How can I fix this and get back to using 3G?
Update:
Changing to 2G mode fixed the problem. BUT...
I have a few questions now:
I want to use 3G but at the same time I don't want the signal to fluctuate between 2G and 3G—want to get constant 3G connectivity without signal fluctuations. Is there any way I can fix that?
I remember reading somewhere that going to recovery and changing permission helps this.
Anyone knows how to change the permissions so the signal fluctuations stop?
I have done a lot of reading on XDA but I haven't noticed an issue like this.
CM9 guys, anything please...
TVwithParents said:
Update:
Changing to 2G mode fixed the problem. BUT...
I have a few questions now:
I want to use 3G but at the same time I don't want the signal to fluctuate between 2G and 3G—want to get constant 3G connectivity without signal fluctuations. Is there any way I can fix that?
I remember reading somewhere that going to recovery and changing permission helps this.
Anyone knows how to change the permissions so the signal fluctuations stop?
I have done a lot of reading on XDA but I haven't noticed an issue like this.
CM9 guys, anything please...
Click to expand...
Click to collapse
I have the same issue mate...using 2G is the only option to get signal without any problem.
The problem doesnot lies on your phone but the problem is with the operator. The area where you live hardly 3G signal reaches there (same problem with me).
You got two options to fix this issue:
1. Change your Network Operator
Or
2. Settle to another location where 3G signal is fully available
Sent from my GT-i9100 equipped with Grenade Launcher and Remote Explosives
Both the options look impossible for me at the moment.
I will start living with the hope that the operator brings us some decent 3G signal here.
Thanks a lot anyways. It was helpful. Hope others facing the issue can learn from this thread. :good:
TVwithParents said:
Both the options look impossible for me at the moment.
I will start living with the hope that the operator brings us some decent 3G signal here.
Thanks a lot anyways. It was helpful. Hope others facing the issue can learn from this thread. :good:
Click to expand...
Click to collapse
Complain to your provider, very loud!
:gooditto the same problem occured to me on Vodafone (Chennai) tried all modems listed above nothing worked ...Used to lose signals all the time with 2g data on especially at my workplace intermittently for 3-4 months ever since I upgraded to ICS..Sometimes used to lose signal even if data was off..multiple reboots/restarts gave no solution ..issue persisted across all the 15+ roms i might have flashed over the past 6 months..
Finally fed up I ported the number to AIrtel..everything works like a charm on JV9 I must say now..can vouch it's a network issue at the location
I am getting constant 5 bars on the 2G network. 3G gives me 2 bars at max.
Asked Vodafone about the future of 3G in my location and they said "We are spreading, sir. We will keep you informed".
I've had this problem too when the phone was constantly switching between 2G and 3G/3.5G. Try adding "Toggle 2G/3G" to notification drawer, set the "Network modes" for it to 2G/3G Only or 2G/3G Only/3G+2G. Switching between modes can take 10-20 seconds, but you should be able to test if you can get good enough 3G only connectivity (in case it is just a network switching problem like for me).
If you want 3G only, Dial *#*#4636#*#* - Phone information - WCDMA only.

[Q] Problem/Issue. Mobile network (3G) data connection drops. Why?

I have a problem with my Galaxy s6 Edge Plus (G928M - Brazil)
When browsing the web with only mobile data turned on, wether using edge/3g/lte, the mobile loses connection .
I still have connection visible in the status bar, but wepages stop recieving data and it just stays hanging, with the loading bar at the same place. It can be fine for 3-4 minutes and then start to act up again.
One sollution is to toggle data connection on/off, then it will work again, but only for a couple of minutes. Even this metode sometimes doesnt solve the problem. My phone is unrooted. I have tried factory reset. Tried to root with arter97 (the problem persists) .I have tried using the different settings in mobile data; just gsm, just wcdma and wcdma/gsm- automatic etc. The signal strenght is good.
I used my simcard in another phone and don't face the problem. I used another simCard in my phone and the problem remais. So, The problem is in the phone, unfortunatelly.
Do anyone have the same problem, know of a cause for this, or have possible a sollution? Please share

Experiencing problem in all roms apart from OOS

Hi All
I am having a problem with network dropping. Network will switch to roaming network and it is NOT possible to manually select my own network. Have been experiencing this for months on CM13 / 14 PA etc. All the same issue.
Anyone have any guidance or resolutions?
Thanks
https://vid.me/cjuJ
Here is a video showing the problem.

network problem

Hi guys,
Please help. My redmi 3s prime has lot of network problems. Network signals keep on going and coming back. Volte is also not stable. In wifi there is no connection problem but in Data on situations can't get signals enough to be able to use met. Service center can't solve my problem. All types of network settings has not helped.
You have a thread here too: https://forum.xda-developers.com/xiaomi-redmi-3s/help/network-problem-3s-prime-t3635728
Are you close to the cell towers? Do you have good signal strength?
I have not such network problems in my area. Problem is as I switch on the mobile data, network goes off. No services and emergency calls appears on top. It has something to do with Data.

SM-N910G WiFi & Cell Signal Issue

Hey guys,
I've been using my Note 4 for a couple years and it was running smoothly before but now it started showing issue, I hope y'all can help me with these problems..
Problem 1: Dual-Band WiFi Connectivity Issue
My N910G could not connect or even find any 5GHz frequency WiFi connection(neither my home WiFi nor the others),
but it shows no issue connecting the 2.5GHz frequency. My home router is working perfectly fine and my other devices which supports 5Ghz band have no issues connecting to my home router so I don't think this is the router at fault. I've tried reset my N910G to factory setting, at the setup it miraculously connect to the 5GHz band without a problem but as soon as I turn the WiFi off or leave it after a while, it disconnected and it does not show any 5GHz after that.
Problem 2: N910G Poor Cell Signal Strength
Okay, now this is a bit tricky. Recently, I changed to a new cell company and sign up for a postpaid package with LTE data only, the sim card is new but as soon as I insert it into my N910G and reboot it. The signal strength of my phone only range from 0 to 2(which is from -80dBm and above) and rarely reaches 4 or 5(highest) but I still can connect to the 4G network, it's just the signal is very poor. At first, I thought it was the sim card at fault but I tried trying it out on another phone and it works just fine.
Can someone help me out with these two problems? Is it because of faulty hardware or software? Does flashing a new custom rom helps to solve these problems?
i have same proplem with 910f is reading sim card and ther'es no signal :'(
bokharimw2 said:
i have same proplem with 910f is reading sim card and ther'es no signal :'(
Click to expand...
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I know right. It's very frustrating.. :crying: My one can't even use 5GHz WiFi..

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