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Atomixs
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Posts: 5
Registered: ‎06-18-2019
Location: GB
Views: 721
Message 1 of 10

Lenovo Tab 4 Plus Horrible Wifi Frequently Dropping, Sometimes every 5-15 Seconds

Hello,

 

I'm pretty desperate at the moment and need all the help I can get. I've spent some time reading other posts on here, but also on other websites such as reddit, but I haven't found a solution yet. Almost two weeks ago, I ordered a "Lenovo Tab 4 Plus 8-inch Tablet" and it arrived on Friday. Since day 1, I have had HORRIBLE wifi problems. Signal strength, speed and literally everything else is just fine. However, whenever it wants to, it will simply cut out. It will just disconnect for a few seconds, sometimes up to a minute straight, and then re-connect again. It is a constant, daily horrible issue that is greatly affecting my experience and usage of the tablet.

 

My samsung tablet died on me so I had saved up over the course of 3 months £150 ish to buy the Tab 4. I am inexperienced with tablets and brands, but the specs seemed decent so I bought it and the performance is fantastic. My only problem is the wifi dropping out.

 

As it drops out, I have checked to see if it still detects wireless connections, and it does. It just doesn't connect to any of them for a few seconds up to a minute and then all of a sudden, it instantly connects and does just fine. It FEELS like it drops out more on games and is worse, but on apps like instagram I have trouble in ongoing conversations as it also drops out very frequently, so it's not just games.

 

Oddly enough, sometimes I might get an hour where it is just fine. No dropping out or anything. But that is quite rare, and normally it just drops out.

 

There is a game called Hay Day which I love and play daily. Sometimes it drops out so fast I can't even get past the loading screen, which I would say is 10 seconds? Maybe more sometimes. If I do get past it in one go, It takes me about 3-6 more loading up times before I've done everything I need on my farm due to disconnections.

 

My wifi itself is fine. Signal is always great. Stable wifi and all other devices such as pcs, laptops, ipads are just fine.

 

I have done one factory reset to no avail. I have also messed with some settings (and reverted them to see what helps more) as well as turned on airplane mode to see if that little trick worked, but nothing has helped. I'm not sure if I am allowed to, but I have the link to where I purchased the tablet from.

 

This is the information in the about section on my tablet.

 

Model: Lenovo TB-8704F

 

Android version: 8.1.0

 

Android Security Patch Level: 5 October 2018

 

Kernel Version: 3.18.71

 

Build number: TB-8704F_S001_011_181108_ROW

 

Software Version: TB-8704F_RF001_170517

 

Hardware Version: Lenovo Tablet TB-8704F

 

If anyone has had experience with, and/or has found a solution that has worked for them, please do let me know and I am pretty desperate here, thanks!

 

 

(on an unrelated side note, on an app called magic piano, the speakers screech and pop and the app freezes, but on absolutely everything else, there is no lag and the speakers are just fine, but this is trivial but does affect me)

Support Specialist
Posts: 2,020
Registered: ‎08-02-2018
Location: US
Views: 590
Message 2 of 10

Re: Lenovo Tab 4 Plus Horrible Wifi Frequently Dropping, Sometimes every 5-15 Seconds

Hi Atomixs! Welcome to our forums community. Have you tried resetting the tablet to factory defaults? If not, follow the steps below. This step will delete your personal files.

1. Turn off the tablet by pressing the Power key for a couple of seconds. While the tablet is off, hold down Volume Up and Power buttons for a few seconds and hold down Volume Up and Power button for a few seconds
2. When Fastboot Mode appears let go of all keys.In this mode choose "Recovery" by using Volume buttons to navigate and the Power key to accept it.
3. Choose "Recovery" by using Volume buttons to navigate and the Power key to accept it.
4. In Recovery Mode select "wipe data/factory reset". Use Volume keys to scroll down and the Power button to confirm that. After that choose "Yes--delete all user data" by using Volume buttons to navigate and the Power key to accept it.
5. At the end select "reboot system now" by using the Power button.

Update us how it goes.



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Atomixs
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Message 3 of 10

Re: Lenovo Tab 4 Plus Horrible Wifi Frequently Dropping, Sometimes every 5-15 Seconds

Hello Jwes,

 

Sorry for the delay. Yes, I had done a factory reset, and nothing has helped. The dropouts are not as frequent for some reason, long after the factory reset, but they are still fairly common and bother me on any app I use. Is there anything else that I can try?

I2k4
802.11n
Posts: 309
Registered: ‎08-04-2018
Location: CA
Views: 399
Message 4 of 10

Re: Lenovo Tab 4 Plus Horrible Wifi Frequently Dropping, Sometimes every 5-15 Seconds

Have you tried logging on to wifi on another network, e.g. a coffee shop hotspot?  Recent exchanges with a user having issues on home wifi, was able to successfully connect and go online connecting to his cell phone data and going to a public library with wifi - so the problem may or may not be with the tablet, maybe instead something involving the modem / router configuration and connection to ISP.  Tech support from the ISP may help.

 

Since you seem to be getting temporary good connections, has to be worth looking at wifi signals on the same Channel your wifi is set to - changing channels in the modem / router can avoid powerful competing signals, sometimes from unlocked local hotspots.  I use this one, there are others:

 

https://play.google.com/store/apps/details?id=com.farproc.wifi.analyzer&hl=en_CA

 

   


Lenovo Tab4 8 - TB-8504F (ZA2B0009US) - Oreo 8.1
Atomixs
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Message 5 of 10

Re: Lenovo Tab 4 Plus Horrible Wifi Frequently Dropping, Sometimes every 5-15 Seconds

Hello again,

 

I haven't tried logging on to another network yet and I won't be going anywhere soon where I will be able to, and I also don't have access to the router to change channels. However I did download that analyzer and found my channel to be overlapping with a few others which is a shame, as I cannot do anything about it as it is not my router, but a family one. Every other device can connect and have a stable internet, it is only my lenovo tablet which suffers, so I highly doubt it is ISP.

 

I updated to windows 10 today and turned on mobile hotspot, which is 2.4ghz when my tablet usually connects with 5ghz. I connected my tablet and done some testing, and I found that the dropouts are significantly reduced, but minor connection losses are much more common. So it is better but the problem still persists, just on a lesser level. What could be the cause of that?

 

In addition to this, I scanned for a system update and updated to TB-8704F_S001016_190606_ROW, however that has had no effect on the dropouts or connection. Any other ideas that I could try?

I2k4
802.11n
Posts: 309
Registered: ‎08-04-2018
Location: CA
Views: 374
Message 6 of 10

Re: Lenovo Tab 4 Plus Horrible Wifi Frequently Dropping, Sometimes every 5-15 Seconds

Not being able to access the modem/router limits abiilty to do more complicated things in settings like trying a different DNS or locking the device ID.  On my cheaper tablet, the individual WLAN connection settings are restricted, but yours might enable something like this on the single device rather than the wifi hub:

 

https://support.opendns.com/hc/en-us/articles/228009007-Android-Configuration-instructions-for-OpenD...

 

not sure if OpenDNS or various alternatives are available in your location - Google's Public DNS probably is:

 

https://developers.google.com/speed/public-dns/

 

I envy 5GHz since 2.4GHz is usually more crowded and things like microwave ovens can disrupt the signal.  On my tablet the upgrade to Android 8.1 included a Lenovo fix for some apps failing to find wifi, but the 2.4GHz connection itself has always been stable on any SSID I've used.  


Lenovo Tab4 8 - TB-8504F (ZA2B0009US) - Oreo 8.1
Atomixs
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Message 7 of 10

Re: Lenovo Tab 4 Plus Horrible Wifi Frequently Dropping, Sometimes every 5-15 Seconds

Following your links, I discovered that my Lenovo tablet already uses the Google public DNS. I'm pretty sure I have changed it to the 1.1.1.1 etc DNS. I'll see how that goes but I highly doubt it would fix the problem.

 

Spending more time on my tablet, I'm very confident that the new system update I installed has made zero difference to dropouts on both frequencies. Still the same old problem as usual. Same disconnects and everything. Reading through loads of threads, people say that downgrading to an old ROM or something like that solved their problems. Would this be an applicable way for me?

 

Otherwise, are there any other options I could try? Thanks a lot for all the advice so far, I appreciate it.

 

 

I2k4
802.11n
Posts: 309
Registered: ‎08-04-2018
Location: CA
Views: 355
Message 8 of 10

Re: Lenovo Tab 4 Plus Horrible Wifi Frequently Dropping, Sometimes every 5-15 Seconds

It would be better if some of the advice helped you. Smiley Indifferent  My tablet simply uses the DNS any particular wifi modem/router is set to.  Seems odd yours already has the Google DNS, unless that's how the main wifi is set.  It's been some years since I tested the various alternative DNS on my home modem/router - they varied quite a bit in performance, and none were as fast / reliable as my (Canadian) ISP defaults.  The Cloudflare DNS 1.1.1.1 is up there with the reputable ones.  The UK likely has various alternatives, and I'd guess the performance of different DNS servers varies a lot with locale - but the tablet should work the same as any other device connected to that wifi hub. 

 

Apart from getting into the main wifi, the only thing I can think to check is whether the problem is limited to one or more specific apps.  That was the Lenovo (not Android) problem fixed when my tablet went from Nougat 7.1.1 to Oreo 8.1 - while wifi always has worked, several mainstream apps wouldn't recognize that it was connected.  That's long gone now.  Since you've done a hard reset you shouldn't have a huge built up of cache junk either in the system cache partition or individual app caches, but wiping them for good measure can't hurt.


Lenovo Tab4 8 - TB-8504F (ZA2B0009US) - Oreo 8.1
Atomixs
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Message 9 of 10

Re: Lenovo Tab 4 Plus Horrible Wifi Frequently Dropping, Sometimes every 5-15 Seconds

I appreciate the advice regardless, a fair bit of it I haven't tried so it has been useful.

 

I use my tablet a LOT, and so far it FEELS like the 1.1.1.1 DNS is better. I've had one complete disconnect and a few minor connection losses, but that's it. The problem is still there but feels better. This is on 5ghz, 2.4ghz actually got worse with sooo many connection losses and a fair bit of complete disconnects.

 

I use other apps, such as instagram, hay day, coin master, and the wifi does drop on all of those, especially instagram. On hay day it would drop so quickly, I wouldn't be able to load into the actual app without having to reconnect (3 months ago), but now I get one or two drops almost every time I go on it. Instagram messages sometimes take ages to send, and coin master asks me to reconnect once or twice a session. I also clear the caches of everything I use every 3 days or so because my tablet has low storage and it ends up lagging a fair bit.

 

I should have mentioned this waay back, sorry, but when I first got the tablet, it was on an older version (I think) of android, or something of the sort, I'm not too great with this. I used it for a little bit before downloading an update. Before the update, it felt like the wifi didn't go once, and I used the same apps, and a few different onces I no longer have installed that relied on a constant connection. The background picture was different, of a lighthouse on a rock. I have the link to the website I bought it from if that would be of any help.

 

After the update, the drops were horrific. Ever so frequent and long, so I mainly used offline apps and didn't use the tablet much. Over time, though, the wifi drops got less and less. Nobody had done anything with the router or changed any settings for our wifi, and I hadn't updated the tablet from the previous update until yesterday. I have no idea why it got better, but that just brings more mystery into this which is a pain.

 

So the issue is still there, but feels better, but just not good enough for me to ignore or for me to use apps happily.

I2k4
802.11n
Posts: 309
Registered: ‎08-04-2018
Location: CA
Views: 344
Message 10 of 10

Re: Lenovo Tab 4 Plus Horrible Wifi Frequently Dropping, Sometimes every 5-15 Seconds

The update TB-8704F_S001016_190606_ROW is june 6 so you should be current on Oreo 8.1.  I just noticed an entry in Android icon / Settings / System / Reset Options / Reset WLAN, Bluetooth.  It brings up a page that says "This will reset all network settings, including WLAN, Bluetooth" button at the bottom.  I've never done it, or needed to so can't vouch for what it does.   

 

My tablet is also a go to for reading and up and downloading media, Chromecasting video to large screen, and Skype calls.  Currently everything works as it should, so I'd doubt there's any inherent problem though it's a cheaper model than yours.  Best of luck.


Lenovo Tab4 8 - TB-8504F (ZA2B0009US) - Oreo 8.1

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