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16 Posts

06-23-2018

AU

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Re: WiFi issue with Tab 4 8 Plus

2018-07-04, 14:49 PM

What thew hell.

 

I thought this issue was limited to 5 Ghz, but I just switched to 2.4 Ghz and did a speed test and even that has killed the wifi!

 

So wifi is completely broken on this tablet? An absolute deal breaker on a tablet, how can they allow this to happen?

 

Edit: Actually looks like the tab automatically switched back to 5 Ghz before I did the speed test.

 

2.4 Ghz seems to work, but only getting 1/3 of the speed I get with 5Ghz

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10 Posts

05-25-2018

NL

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Re: WiFi issue with Tab 4 8 Plus

2018-07-04, 16:45 PM

Tom_MI Seems to work, I have an Asus Router (AC3200) With 2 * 5GHZ bands, I disabled AC on one of them, and connected the Lenovo to that, No Problems anymore on the 5GHZ band, only slower then AC of course ...but hey, It's LENOVO! what can you expect!
Cheap tablet with cheap achievements!

 

Here is a speedtest result:

 

 

 

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19 Posts

06-29-2018

US

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Re: WiFi issue with Tab 4 8 Plus

2018-07-04, 19:13 PM

Chr0mium... for sure if your AC router has 1 name for 2.4 & 5g, it'll switch right in the middle of a speed test, back to 5g, and die. Mine is still going strong, with a dedicated 5g N network.

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16 Posts

06-23-2018

AU

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Re: WiFi issue with Tab 4 8 Plus

2018-07-04, 22:54 PM

 wrote:

Chr0mium... for sure if your AC router has 1 name for 2.4 & 5g, it'll switch right in the middle of a speed test, back to 5g, and die. Mine is still going strong, with a dedicated 5g N network.


I have 2 different names, but it still switched.

 

I've told the tablet to forget the 5 GHz network now.

 

I don't want to switch off AC because that will slow down all my other devices

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19 Posts

06-29-2018

US

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Re: WiFi issue with Tab 4 8 Plus

2018-07-05, 2:57 AM

@Chr0mium.  That's also a Good solution. Sadly most of the newer Mesh WiFi, like Google, do not have the option for separate names. 

 

Hopefully when Oreo is released, this will be fixed. But it's not like there are a lot of tablet choices, if you want one scheduled for a current update. Pretty sure I even saw one at Micro Center still on Kit Kat. 

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2 Posts

06-03-2018

US

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Re: WiFi issue with Tab 4 8 Plus

2018-07-05, 3:01 AM
A good choice is the Huawei M3 or the M5
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4 Posts

05-31-2018

BE

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Re: WiFi issue with Tab 4 8 Plus

2018-07-05, 11:31 AM

@Tom. Thanks for your testing.

But just like 5GHz, we can only manage the WIFI protocol if we have access to the router. What if we use WIFI on an airport, railway station, shopping mall ...?

 

To my knowledge, the AC can not be disabled on the client side (tablet, smartphone) and I have not found any app that make this possible. Not even as root.

And that is why we must continue to hope that Lenovo will come up with a solution.

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19 Posts

06-29-2018

US

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Re: WiFi issue with Tab 4 8 Plus

2018-07-05, 13:18 PM

True. For sure no control over public WiFi. I would imagine most are 2.4 GHz though, since that travels better. I see Xfinity WiFi from a neighbor, and that's 2.4. But also hoping issue is remedied. 

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4 Posts

06-04-2018

DE

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Re: WiFi issue with Tab 4 8 Plus

2018-07-05, 16:46 PM

Seems it really is 5Ghz AC only that stops working. But what now?

No matter which firmware I use, the problem still exists...

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19 Posts

06-29-2018

US

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Re: WiFi issue with Tab 4 8 Plus

2018-07-05, 18:12 PM

If your router allows separate names for 2.4 & 5 Ghz, that's the best option for now,

so you specifically just join 2.4. Most are configured with one name by default .

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