Wifi 5 Ghz does not work - Xiaomi Mi Pad 4 Plus Questions & Answers

Good morning.
I would need help; wifi in the 5 Ghz band has not worked for a long time,
I have the LTE + Wifi tablet. ROM MIUI V10.3.2.0.ODJCNXM Stable
I can't get wifi to work on this band; it only works in 2.4 Ghz.
I have tried changing the frequency channel to 36, 44, etc; I have also changed the router frequencies from 80Mhz to 40Mhz and 20Mhz with no result. It does not occur to me what else can be done; install multiple ROMs; Chinese original and other EU versions; but all without result,
The wifi connects in low bands but without Internet access; it always keeps getting IP address and when it connects; you do not have Internet access; tested with various routers and different companies; I am starting to think that it could be a hadware problem; some help?
At the beginning of buying the tablet it worked well.

Related

Does the HD7 really do 802.11n?

Until recently I was using Connectify to set up a home wifi hotspot for my phone (TMOUS HD7, running 7720 with the latest T-Mobile/HTC firmware) to use. Yesterday I installed a router instead, which has allowed me to play with more network settings.
If I set the router to 802.11n-only, my HD7 can see it but can't connect. If I set it to 802.11g-only, everything works fine. Has anyone actually confirmed that the HD7 can do "n"?
my home wifi network is "n" and both my hd7's connect to it fine.
I have forced the n-mode, no problems connecting
Yep, Wireless N works perfectly fine here
Which 802.11n are you talking about? 2.4Ghz works but 5Ghz won't. so it only does draft n not full 300mbps 5ghz 802.11n
You are comparing two different things, WLAN standard has nothing to do with frequency, HD7 follows IEEE802.11b/g/n standard operating on 2.4 GHz with 20/40MHz bandwidth, allowing maximum throughput of 150Mbps. It is capable of DSSS and OFDM modulation, and is also capable of operating in dualband mode, which allows it to connect to 2.4 GHz and 5GHz IEEE802.11a/b/g/n networks, this is however up to the OEM to enable this feature, this is not the case for HD7, or any WP7 device out there.
Snake. said:
You are comparing two different things, WLAN standard has nothing to do with frequency, HD7 follows IEEE802.11b/g/n standard operating on 2.4 GHz with 20/40MHz bandwidth, allowing maximum throughput of 150Mbps. It is capable of DSSS and OFDM modulation, and is also capable of operating in dualband mode, which allows it to connect to 2.4 GHz and 5GHz IEEE802.11a/b/g/n networks, this is however up to the OEM to enable this feature, this is not the case for HD7, or any WP7 device out there.
Click to expand...
Click to collapse
Draft-n was 2.4ghz 150mbps was it not? where as full rate 802.11n is 300mbps and operates at 5ghz?!
Well, yes and no, 802.11n is capable of data rates up to 600 Mbit/s, those are achieved only with the maximum of four spatial streams using a 40 MHz-wide channel. However, when in 2.4 GHz enabling this option takes up to 82% of the unlicensed band, which in many areas may prove to be unfeasible. I don´t have device which is able to be set to achieve this limit (2.4GHz / 40MHz with 400ns Guard Interval), so I can´t test it. Do you have internet connection that requires such a high value?
Snake. said:
Well, yes and no, 802.11n is capable of data rates up to 600 Mbit/s, those are achieved only with the maximum of four spatial streams using a 40 MHz-wide channel. However, when in 2.4 GHz enabling this option takes up to 82% of the unlicensed band, which in many areas may prove to be unfeasible. I don´t have device which is able to be set to achieve this limit (2.4GHz / 40MHz with 400ns Guard Interval), so I can´t test it. Do you have internet connection that requires such a high value?
Click to expand...
Click to collapse
lol personally now i don't my links is 17mbit but i like the 300mbps for video streaming and file transfers, if only i had an access point with a gigabit lan interface haha

Trouble with tablets on 5ghz network

Hi
I have a dual band router, and i prefer to have as many devices on 5ghz, as it performs A LOT better in my apartment.
Of course i know that the chromecast is 2.4ghz only.
I have this issue: When i start something (netflix, youtube, deezer) from a device on the 5ghz network, it starts fine, but when the tablets go to idle mode, very often they stop seeing the chromecast and i lose control of the content playing (although it is still playing). This is not an issue if i run the tablets on 2.4ghz.
Any ideas?
May have set the tablet to to only use 2.4ghz when you are using the CC. Settings are under advance I think under WiFi.
I know with my phones in the house we have to limit it to 2.4 instead of 5ghz or we don't even see the CC since the our router has 2 separate ids for 2.4 & 5
rekids said:
May have set the tablet to to only use 2.4ghz when you are using the CC. Settings are under advance I think under WiFi.
I know with my phones in the house we have to limit it to 2.4 instead of 5ghz or we don't even see the CC since the our router has 2 separate ids for 2.4 & 5
Click to expand...
Click to collapse
That's weird, I have my 2.4 and 5Ghz networks with different SSIDs and I can see the Chromecast from either from both my tablet and Nexus phone regardless of which frequency they're on.
Really? Hmm with our moto maxx's and both RAZR M (all unlocked and rooted running newest firmware). When we have them in only 5ghz mode we can't see the CC
Are you sure the problem is actually related to using 5 GHz? I've seen the same problem on my 2.4 GHz devices - loss of connection to the Chromecast a few minutes after starting a stream, and difficulty of re-establishing it to control the stream. Maybe something else has changed, or you're just noticing the problem now.
DJames1 said:
Are you sure the problem is actually related to using 5 GHz? I've seen the same problem on my 2.4 GHz devices - loss of connection to the Chromecast a few minutes after starting a stream, and difficulty of re-establishing it to control the stream. Maybe something else has changed, or you're just noticing the problem now.
Click to expand...
Click to collapse
Mines started doing it the last few days as well on 2.4ghz only, only some apps do it, youtube been one.
it's been my experience that CC can only be seen across 5 & 2.4GHz when channel width settings match across bands.
having said that, i've resorted to isolating the 2.4 band for CC traffic only, keeping all other devices (except tablet doing the mirroring) on the 5GHz band. ever since making the change, CC streaming has been relatively flawless.
It's probably a WiFI signal reception issue in general.
Case-in-point, I also have a dual-band router with different SSIDs on 2.4 GHz and 5 GHz APs (you really should use different SSIDs except in special cases).
When my phone has strong medium to signal, I have no problem using Chromecast while connected to 5 GHz. Phone sleeps, wakes, still connected.
However, I just moved my workstation to another room where 5 GHz is weak. 2.4 GHz is still strong (lower frequencies travel better), though.
With my phone on 5 GHz, control of Chromecast was sluggish. Chromecast's playback was fine because it's still getting good 2.4 GHz signal.
My phone went to sleep, and when it woke it "forgot" it was controlling Chromecast - in fact, it could not longer see any Chromecasts.
I switched over to the 2.4 GHz network and Chromecast was visible once more. I rather use 5 GHz on my phone and leave the 2.4 GHz band uncluttered, so I might have to relocate/reorient/reconfigure my router now...
When I'm streaming and tab casting from a laptop, I connect it to 5 and everything runs smoother because the data stream is divided over two frequencies. However I find that the Nexus 5 screen casting feature is not as content to operate if I'm connected to 5 GHz.
Sent from my Nexus 5 using Tapatalk

Settings to force or prefer Wi-Fi in 5 GHz band over 2.4 GHz band

I have Note 4 SM-910T, Android 5.1.1 Stock with systemless root.
The phone's Wi-Fi always connects to 2.4 GHz. I have a 5 GHz network with 802.11ac also available from the same router, with the same SSID, but it is effectively unused. Even if I am 2 m from the router, 2.4 GHz is selected.
I have searched for settings to force or prefer 5 GHz, and all the suggested settings are not present in Samsung Touchwiz. Is there any other way to force or prefer 5 GHz?
Can you manually add your network name, with "-5G" at the end?
When I can't find the band, sometimes that's worked for me.
My network is:
"M.Heidegger" - 2.4
&
"M.Heidegger-5G" - 5.0
Hope that helps.
If it doesn't, I'm sorry.
=·\
NeroCat said:
Can you manually add your network name, with "-5G" at the end?
=·\
Click to expand...
Click to collapse
If you create a unique SSID for 5G band, the device will not seamlessly switch over to 2.4 GHz when you move out of range of the 5 GHz network. By setting the same SSID for both, devices are supposed to roam between the best bands and APs automatically without connection interruption.
Sorry to chime in so late on this thread but the feature you're probably looking for is called "Prefer 5G" and it's on the WAP side. At least my Ubiquiti UAP-AC-PRO has the option and it works fairly well as long as I turn down the 2.4Ghz radio. Speaking of, try turning your 2.4 down to entice 5Ghz adoption.

How to Double the WiFi Speed of your OnePlus 3/3T

Hello guys;
I read this article. and tried.
https://www.xda-developers.com/how-to-double-the-wifi-speed-on-your-oneplus-3-3t/
I used root explorer, modified WCNSS_qcom_cfg.ini (located in /system/etc/wifi)
I changed "gChannelBondingMode24GHz=0" to "gChannelBondingMode24GHz=1"
I restarted the phone. It connected to wifi and still my 2.4ghz band looks 72 mbps connection speed.
When i use 5ghz band it looks 433mbps speed.
What can i do? :good:
It only helps if your router can do wider signal (20MHz vs 40MHz) as well. 5GHz is irrelevant here, the tutorial only involves bonding 2.4GHz channels.
Do a speedtest to see if there is any difference.
Well, as the article already says: Under Certain Conditions. And it also states that it is not recommended in area's with a large number of networks. The 2.4GHz band is way to crowded.
I guess your access point/router doesn't support 40 MHz channels. Also seeing that your 5GHz is "limited" to 433Mbps, which probably means that it is a little bit older AP/router?
Why do you even want 2.4GHz slowspeeds (Even when doubled) when you have 5GHz which is faster already?
I tried it. At my phone it works.
After changing the value you should do a restart
It works for me too

Question 5ghz wifi problem

Hi - I recently updated my OP10Pro 5G to the NE2215_11_C26 update, OOS13, US,, and my 5ghz wifi is now really slow - 40-50mbps down - unless I toggle wifi or airplane mode. Speed goes back up to normal, then goes down and stays there. Other devices in 802.11ac work just fine on the 5ghz band
Any idea what's going on?
Thanks
ayoldguy1 said:
Hi - I recently updated my OP10Pro 5G to the NE2215_11_C26 update, OOS13, US,, and my 5ghz wifi is now really slow - 40-50mbps down - unless I toggle wifi or airplane mode. Speed goes back up to normal, then goes down and stays there. Other devices in 802.11ac work just fine on the 5ghz band
Any idea what's going on?
Thanks
Click to expand...
Click to collapse
I had exactly the same problem and went through a "chat session" with OnePlus support about two weeks ago. I was asked to send my phone in for "repairs". The way their agent responded to my issue suggested that it is a common problem.
Edit: Sorry, my phone was running OOS 12 at the time I experienced the problem. I don't recall the build number and I don't have the phone now, so I can't check.
So, my phone has been "under repair" now for two weeks. No status update, no idea when it might be repaired or replaced. Meanwhile, I'm using my previous phone, a Moto One Ace 5G, and wondering why I bought the OnePlus at all.
ayoldguy1 said:
Hi - I recently updated my OP10Pro 5G to the NE2215_11_C26 update, OOS13, US,, and my 5ghz wifi is now really slow - 40-50mbps down - unless I toggle wifi or airplane mode. Speed goes back up to normal, then goes down and stays there. Other devices in 802.11ac work just fine on the 5ghz band
Any idea what's going on?
Thanks
Click to expand...
Click to collapse
Did you check the negotiate speed?
Have a look with WiFi Monitor, ight shed some light.
maddler said:
Did you check the negotiate speed?
Have a look with WiFi Monitor, ight shed some light.
Click to expand...
Click to collapse
I think I figured out my problem. I have Verizon FiOS, and have a G1000 Quantum Gateway AC router and the matching extender. The extender had the same SSID for the 5ghz band as the main router .. so the phone would hang on to the router or extender no matter where I moved in the house, no matter whether I checked the "switch Wifi to stronger network" box. I created a 'sub' SSID, and now the phone will (usually) switch to the stronger network, and seems to work ok.
I didn't have this with my AC Wifi OnePlus 7 Pro, or with my AX laptop. But this did seem to fix the issue with the OP10. I wonder if the new FiOS wifi 6e router + new extender would work better with my 10 Pro if extender is broadcasting same SSID?
i lost wifi 6
ayoldguy1 said:
I think I figured out my problem. I have Verizon FiOS, and have a G1000 Quantum Gateway AC router and the matching extender. The extender had the same SSID for the 5ghz band as the main router .. so the phone would hang on to the router or extender no matter where I moved in the house, no matter whether I checked the "switch Wifi to stronger network" box. I created a 'sub' SSID, and now the phone will (usually) switch to the stronger network, and seems to work ok.
I didn't have this with my AC Wifi OnePlus 7 Pro, or with my AX laptop. But this did seem to fix the issue with the OP10. I wonder if the new FiOS wifi 6e router + new extender would work better with my 10 Pro if extender is broadcasting same SSID?
Click to expand...
Click to collapse
As long as the 2.4GHz and 5GHz bands will share the same SSID that's l;ikely the phone will pick the one with the "strongest signal".
If you want to make sure to always connect to the 5GHz one, using a different SSID is the only option. Doesn't really matter which AP/router/repeater/extender you use.
q
g96818 said:
i lost wifi 6
Click to expand...
Click to collapse
Check under the couch, that's always there!
maddler said:
As long as the 2.4GHz and 5GHz bands will share the same SSID that's l;ikely the phone will pick the one with the "strongest signal".
If you want to make sure to always connect to the 5GHz one, using a different SSID is the only option. Doesn't really matter which AP/router/repeater/extender you use.
q
Click to expand...
Click to collapse
Yea.. the issue was that I had the 5ghz band on the SAME SSID being broadcast by both router and extender.. forgetting the 2.4ghz didn't do anything, nor did ensuring that the "switch to stronger Wifi network" toggle was on. My OP10Pro would connect to the router's 5ghz signal when entering the house, then stay on it when moving around the house without switching to the stronger 5ghz signal with same SSID emitted by the extender. By creating TWO 5ghz SSIDs, one for router and one for extender, the OP10Pro now - usually, it isn't perfect - switches between the router/extender 5ghz SSIDs depending on the signal strength, though Android13's cutoff for defining "weak signal" seems either arbitrary or very forgiving. I'm wondering if Verizon's new Wifi 6E router + extender will fix this issue and allow me to just clone the SSID on both devices.. i read somewhere that wifi 6 and 6e devices can do this natively.. not sure as I'm a novice at best at networking. Thanks.
ayoldguy1 said:
Yea.. the issue was that I had the 5ghz band on the SAME SSID being broadcast by both router and extender.. forgetting the 2.4ghz didn't do anything, nor did ensuring that the "switch to stronger Wifi network" toggle was on. My OP10Pro would connect to the router's 5ghz signal when entering the house, then stay on it when moving around the house without switching to the stronger 5ghz signal with same SSID emitted by the extender. By creating TWO 5ghz SSIDs, one for router and one for extender, the OP10Pro now - usually, it isn't perfect - switches between the router/extender 5ghz SSIDs depending on the signal strength, though Android13's cutoff for defining "weak signal" seems either arbitrary or very forgiving. I'm wondering if Verizon's new Wifi 6E router + extender will fix this issue and allow me to just clone the SSID on both devices.. i read somewhere that wifi 6 and 6e devices can do this natively.. not sure as I'm a novice at best at networking. Thanks.
Click to expand...
Click to collapse
Other than the actual "sensibility", that's not a 10pro specific issue.
2.4 and 5 GHz bands will behave differently and the phone will "perceive" one or the other as the best choice based on various factors and the overall quality of the signal.
I had the very same issue on my laptop.
OnePlus support had my phone for 3 weeks to fix my 5G wifi speed problem. They report that they replaced the motherboard under warranty and the phone has been shipped back to me. I should have it in a couple days and will certainly test to confirm that 5G wifi speed is similar to other devices connected to my network.
I've defined separate SSIDs for 2.4g and 5g wifi in my gateway, so I can control which SSID I connect to. 2.4g was always consistent with other devices connected at 2.4g. The problem with my phone was related only to 5g.
FrogFan said:
OnePlus support had my phone for 3 weeks to fix my 5G wifi speed problem. They report that they replaced the motherboard under warranty and the phone has been shipped back to me. I should have it in a couple days and will certainly test to confirm that 5G wifi speed is similar to other devices connected to my network.
I've defined separate SSIDs for 2.4g and 5g wifi in my gateway, so I can control which SSID I connect to. 2.4g was always consistent with other devices connected at 2.4g. The problem with my phone was related only to 5g.
Click to expand...
Click to collapse
I received my "fixed" phone about a week ago now and I've been monitoring its wifi performance. Bottom line: 5G has been generally slow, much slower than my laptop or my Moto Ace 5G, but the speed is highly variable and quite fast sometimes. I just ran Speedtest on my laptop and OnePlus. Both were connected to the same 5G SSID. The laptop performance was 304 mbps down, 172 mbps up. The OnePlus performance was 48 mbps down, 205 mbps up.
I switched both the phone and the laptop to my 2.4G SSID. Laptop performance was 43 mbps down and 15 up. Phone performance was 116 mbps down and 88 mbps up.
After the 2.4G test, I switched the phone and the laptop back to the 5G SSID and immediately retested wifi speed. I observed performance of 339 mbps down and 373 mbps up on the phone. The laptop speed was 248 mbps down and 148 mbps up.
I know that my gateway broadcasts 5G on two different channels for the same SSID and I have no control over what channels it picks. Maybe the phone picks a congested channel sometimes and the slow observed speeds are due to that, whereas the laptop (and the Moto Ace) always seem to pick the less congested channel?
The other thing I read about was "randomized MAC address" versus "device MAC address" and someone, somewhere (I don't remember where) suggested that using device MAC address resulted in improved speed. I just made that switch for the 5G SSID. Speed is very good now, and I'll monitor it to see if it slows over time.
Sorry for the long message, but I'm thinking that the "fix" really did nothing to improve 5G wifi performance and there is something not quite right about the OnePlus's handling of 5G wifi.

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