Is there any way to switch WiFi between 2.4 and 5ghz? - Samsung Galaxy S7 Edge Questions and Answers

Samsung Galaxy S7 Edge running android 7.0
I'm trying to add some Sonoff devices to my works WiFi network, via the eWeLink app. The app only supports 2.4ghz but my phone has a preference for the 5ghz network. Both 2.4 and 5ghz are using the same SSID and because of other devices connected I can't rename one or temporarily turn off 5ghz...
Any way round this other than buying an old phone or tablet just for adding devices?

Related

[Q] Wireless N

I could have sworn the a500 supported wireless N. Any ideas why it doesn't seem to detect my wireless N signal? My laptops pick it up and connect to it just fine, but this tablet doesn't see it.
nubbin77 said:
I could have sworn the a500 supported wireless N. Any ideas why it doesn't seem to detect my wireless N signal? My laptops pick it up and connect to it just fine, but this tablet doesn't see it.
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Click to collapse
Try a couple things?
1. (mandatory) Reboot your router. (want to get router bugs and issues out of the way. Other devices connected don't mean much to buggy wifi).
2. Is your Wifi N 2.4 or 5Ghz? The A500 only works on 2.4Ghz. If you have a dual band router, make sure your 2.4Ghz band is set to mixed.
3. Try a different security setting. Work your way up to what you're at.
4. Try another band (G)...heck, even B!
5. Desperation! Try someone elses Wifi N? Even a starbucks or something.
If it doesn't work then you may have some faulty hardware. Exchange time.

[Q] Galaxy S4 not detecting 5GHz wifi

So i have a week old galaxy S4 and everything is fine until i realise that it only sees and connects to my 2.4Ghz SSID. I use a dual-band sitecom WL-309 extreme gaming router. My laptop, ipad and galaxy tab can scan and connect to the 5Ghz SSID. I'm really surprised that a phone that boasts 802.11ac isn't even able to see 5ghz wifi. i recently installed the wifi analyzer app, and it doesn't help, can only still see 2.4.
I recently upgraded my firmware to the indian MEA stock ROM. Dunno if anyone out there has experienced this, help apprectiated.
Thanks
I saw in a post that wifi channel may be the problem, my router has the following 5ghz channel options: auto,36,40,44 and 48. Just tried all and still no joy.
im having the same problem exaclly.
i cant see any 5Ghz network at all.
i tried replacing channels on my router and still. cant see.

[Q] 802.11AC and 5GHz Issue

I've researched for any past issues on this topic but couldn't find anything similar.
I live in London and use Asus AC68U, I have connected my Note 4 (N910C) and Tab S fine on both 2.4GHz and 5GHz, but never checked whether this is connected on N or AC. The Channel setting on the router is left on Auto, and I've labaled the 5GHz SSID to have a "5G" at the end (eg. 2.4GHz SSID: "My WiFi" ; 5GHz SSID: "My WiFi 5G")
Then flew to Indonesia bringing along the AC68U, reset and reconfigured the Router to be used there, I have also configured an N66U as an Access Point (not repeater). Now my Note 4 cant' even see 5GHz anymore, even though wireless configuration is exactly the same as in London (except the WiFi SSID and password). I then found out a way to know which 802.11 speed my phone is connected to (by doing the #*0011# thing), and turned out it's on 802.11N 2.4Ghz.
I then went to the N66U (out of Radio range of the AC68U) and I still cannot see the 5GHz SSID. So I took out my Tab S 8.4, switched WiFi on, lo behold, 5Ghz is visible and able to connect to both router seamlessly. Checking the connection type, the Tab S is on 802.11AC Ch. 36 Frequency 5180Mhz, WiFi Power Save Mode On, link speed 866Mbps, to the AC68U.
My Dad has a Galaxy S5, it also cannot see the 5GHz SSID, but is at least connected to the 2.4GHz 802.11AC.
I have changed channels manually on the router but still can't see 5GHz from the Note 4, also switched OFF the WiFi Power Save Mode.
So the question is.... does my Note 4 N910C even have AC? And what is going on with my 5GHz band? Has anyone seen this problem before or point me to a thread you've been to?
I've got the n910c and connects in ac on 5ghz fine. I have a netgear r7000 running ddwrt. Has it ever worked for you ?
manook said:
I've got the n910c and connects in ac on 5ghz fine. I have a netgear r7000 running ddwrt. Has it ever worked for you ?
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I also have the 910F and a Netgear R6300 with DD-WRT.
It took some configuring. But i expect this has something to do with the preset ups for using your router in Indonesia.
itll probably;y work when you get back to wherever you live.
Thanks for the replies.
manook said:
I've got the n910c and connects in ac on 5ghz fine. I have a netgear r7000 running ddwrt. Has it ever worked for you ?
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Click to collapse
5Ghz has worked for me in London using the same Asus router that I used in London, but I'm not sure if my Note 4 ever connected as AC.
fkofilee said:
I also have the 910F and a Netgear R6300 with DD-WRT.
It took some configuring. But i expect this has something to do with the preset ups for using your router in Indonesia.
itll probably;y work when you get back to wherever you live.
Click to expand...
Click to collapse
Well, I brought the AC68U I used in London to Indonesia, the phone was connected on 5GHz on this router when it was in London, but somehow it can't even see the 5GHz SSID now in Indonesia.
I think I need to reset the modem and WiFi module somehow, been searching the web on how to do that but haven't found it yet.
Other devices that are currently able to connect to 5GHz and/or AC:
Galaxy Tab S: Can connect to 2.4GHz + 5GHz on AC
Galaxy S5: Can connect to 2.4GHz AC (Cannot see 5GHz AC)
Laptops: Can connect to 2.4GHz + 5GHZ N
Added Info: Tried WiFi Analyzer, Note 4 still cannot see 5GHz signal while the Tab S can.
Did you put in a local SIM? The phones may be respecting local regulations regarding frequency usage that the other devices don't, as they don't have a SIM giving them locale. I'd be curious what would happen if you put in your London SIM.
rcobourn said:
Did you put in a local SIM? The phones may be respecting local regulations regarding frequency usage that the other devices don't, as they don't have a SIM giving them locale. I'd be curious what would happen if you put in your London SIM.
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Click to collapse
Yeah I'm using local SIM, but when I arrived still with my Voda UK SIM in the phone, the existing N66U Router (before I turned it into Access Point) was transmitting both 2.4GHz and 5GHz, my Note 4 couldn't see it. I thought I had switched off 5G SSID but when I checked, it was ON. Very sure something is up with this Note 4.
I removed the SIM card and inserted it to my LTE Tab S, switched it on, switched WiFi on, connected to 5G just fine.
I'm gonna try re-flashing the same stock ROM. This phone and the Tab are all Non-Rooted btw.
Solution: Don't set the frequency to "Auto". Manually choose the frequency for 5 Ghz, preferably to something low such as channel 36. This worked for me. I haven't tried with any other frequency though. Someone mentioned online that it might be due to Android phones not supporting DFS frequencies.
Good luck.
manook said:
I've got the n910c and connects in ac on 5ghz fine. I have a netgear r7000 running ddwrt. Has it ever worked for you ?
Click to expand...
Click to collapse
I just installed dd-wrt on my netgear r7000 and my n910h stopped seeing the 5Ghz band after that.
With r7000 stock firmware everything is fine.
Could you please tell me what's your dd-wrt settings for the 5Ghz band?

Hotspot 5 Ghz

Device: XT1527 (MOTO E 4G LTE)
I know the device does not support 5ghz for wifi.
Sometimes some devices come with the 5ghz mode for the hotspot even though the wifi ac, 5ghz, option is not available, for e.g Samsung Avant.
Can anyone who owns this device find out for me if the device has the option to launch hotspot in 5ghz mode?
It should be in the configure menu under tethering and hotspot right under where you choose a password.
I really appreciate everyone's effort.
Thanks
No, it hasn't.

Samsung Galaxy Tab A SM-T595 Bizarre WiFi issue - Only sees 5GHz Networks

Hello
I have a Galaxy Tab A 2018 SM-T595 tablet which is fully functional in all aspects apart from the fact it cannot see any 2.4ghz wifi networks. My home router has separate bands for 2.4 and 5ghz. The tab can see the 5ghz network as well as neighbouring 5ghz networks absolutely fine. It connects and is all good. This is fine at home but when out most networks are 2.4ghz. Even using third party wifi scanning apps does not detect a single 2.4ghz network. I have tried updating the tablet (currently running Android 10) and even downgrading via Odin to an earlier firmware. I have even had the back off and checked the two antenna are firmly connected and have continuity between the wifi board and the main board, which I do. Any ideas cos I am plum baffled.

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