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[Q] Wifi at home issue

Hi Everyone.
I am not a developer nor really tech savy, but I do know how to adjust a few things. Anyways, I just got my Infuse 4G, loving it so far except at my home. I have really fast internet connection and my router is new and is Cisco. My laptop, desktop and tablet all work really well. My infuse though will connect and tells me that it has a really strong wifi connection, but I can't open anything for **** such as a browser or market app. It works fine at work and at any att wifi hot spots.
Can anyone advice me on this? Sometimes though, it works fine but about 85 % of the time at home, I can't open any internet connection although it says that I am connected to wifi.
I am about 5 days close to returning this if this problem can't be resolved.
Any help will be really and greatly appreciated.
Thank you.

taegello said:
Hi Everyone.
I am not a developer nor really tech savy, but I do know how to adjust a few things. Anyways, I just got my Infuse 4G, loving it so far except at my home. I have really fast internet connection and my router is new and is Cisco. My laptop, desktop and tablet all work really well. My infuse though will connect and tells me that it has a really strong wifi connection, but I can't open anything for **** such as a browser or market app. It works fine at work and at any att wifi hot spots.
Can anyone advice me on this? Sometimes though, it works fine but about 85 % of the time at home, I can't open any internet connection although it says that I am connected to wifi.
I am about 5 days close to returning this if this problem can't be resolved.
Any help will be really and greatly appreciated.
Thank you.
Click to expand...
Click to collapse
Probably your router. If it's Linksys-branded Cisco of the "saucer" form factor - find something better. Linksys-branded Cisco hardware sucks these days.
I suggest finding a router that is supported by DD-WRT - I have always been disappointed when running routers with closed-source factory firmware.
http://www.newegg.com/Product/Produ...=0&Order=BESTMATCH&Description=DD-WRT&x=0&y=0

taegello said:
Hi Everyone.
I am not a developer nor really tech savy, but I do know how to adjust a few things. Anyways, I just got my Infuse 4G, loving it so far except at my home. I have really fast internet connection and my router is new and is Cisco. My laptop, desktop and tablet all work really well. My infuse though will connect and tells me that it has a really strong wifi connection, but I can't open anything for **** such as a browser or market app. It works fine at work and at any att wifi hot spots.
Can anyone advice me on this? Sometimes though, it works fine but about 85 % of the time at home, I can't open any internet connection although it says that I am connected to wifi.
I am about 5 days close to returning this if this problem can't be resolved.
Any help will be really and greatly appreciated.
Thank you.
Click to expand...
Click to collapse
I would think that if it works well at work and att hot spots that this would point to ot being an issue with the home router.
Have you tried resetting the router?
Sent from my SAMSUNG-SGH-I997R using XDA App

resetting meaning turning it off and wait for a few minutes and turning it back on?
No, but if that was the case, my other devices shouldn't work neither no?

taegello said:
resetting meaning turning it off and wait for a few minutes and turning it back on?
No, but if that was the case, my other devices shouldn't work neither no?
Click to expand...
Click to collapse
Some routers are buggy and don't play well with some devices.
90% of the time it's the router's fault.

Google or Zyxel? WFi issues on Android devices only

The Problem: WiFi disconnects every time i am barely downloading anything or just watching youtube, and re connects, and so on.
WiFi Modem: Zyxel P-2812HNU-F3
Ever since i bought Galaxy Nexus back in December 2011, I have had WiFi issues 24/7. I thought it was a hardware problem, but then i went to my friends house and tried his WiFi and it worked great. He had a linksys modem while I had Zyxel. Back then i honestly didnt think that the Zyxel modem could be the problem. Thats because i had Galaxy S 2 before Nexus and that phone worked great. But SGS2 was on 2.3. So i thought that Google ****ed up when they released ICS. I still do, for some of us. If you have the time, please look at this thread in Galaxy Nexus forum, where we discussed the problem:
http://forum.xda-developers.com/showthread.php?t=1386884
Long story short, i tried changing lot of things in router but nothing worked. When 4.1 was available for my Nexus, i downloaded it without even thinking that there might be a WiFi fix because i had given up on WiFi. I used 3g until 4.1 was out. Anyways, a few days after i had installed 4.1 i turned on WiFi and run a test in Speedtest app. Speed was great. But the thing i worried about was WiFi being disconnected. So i tried downloading a gameloft game and no diconnect. The whole game downloaded fine. But after a few hours later i noticed after downloading some movies it sometime disconnected and reconnected. I was mad at google again. But JB was much, MUCH better then ICS. Atleast i can use my WiFi now. Sometimes it works, other times it wont.
Yesterday i got my Transformer Infinity. This device is on 4.0.3. The first thing i did when setting up device, was downloading speedtest. I ran it, and it had the same problem that ICS on my Nexus had. I began to search again why this happens in ICS. I downloaded WiFiFix manager but that didnt help at all. Many other zips and apps didnt help either. So... Today, or tonight i opened up router page and started changing wpa2 to wps, like i did months ago for Nexus. But nothing helped. Then i wanted to try omething i havent done before, so i changed 802.11b/g/n to g only. Now WiFi works greta on my Infinity and Nexus. No disconnects at all! (lol i so hope that this is a permanently fix)
I dont know how that will effect my other devices, mostly PCs. So is this a Zyxel issue or Android? WiFi with n works normal with my PCs and other android devices. This must be because of 4.0+, right? I dont think its a hardware issue at all because my Infinity behaves same way.
Should i stay on 802.11g or is there something i can do to fix my devices to work with 802.11n?

Or is there a way i can enable 802.11g for Infinity and Nexus only, and use 802.11n for the rest?

[Q] Wifi

Not to continuously post stuff on XDA about this phone...but I am curious....my Wifi keeps disconnecting and reconnecting....depends sometime 1-2 mins into using Wifi and somethings after using it for more than 1 hour....none of my other devices have this issue and I was just wondering if anyone else has this problem with this phone...thank you
Edit: It still happens....hmm

zrmxp95 said:
Not to continuously post stuff on XDA about this phone...but I am curious....my Wifi keeps disconnecting and reconnecting....depends sometime 1-2 mins into using Wifi and somethings after using it for more than 1 hour....none of my other devices have this issue and I was just wondering if anyone else has this problem with this phone...thank you
Edit: Never mind....my computer loses connection too just doesn't show it...using a different wireless router and seeing if I drop connection with it....sorry for posting useless stuff
Click to expand...
Click to collapse
I've been having the same issues... I have a laptop that doesn't seem to have any problems with my current router (Medialink Wireless N router I got off Amazon - good router until this issue...). It also doesn't matter how close I am to the router either. I've been sitting 2 feet from my router, and it will still continuously disconnect and reconnect. Let me know what your findings are...

Idk if this will help: settings/wifi/menu/advanced/keep wifi on during sleep. I have mine set to always, no problem here. If that doesn't help try assigning an ip through your routers dhcp.
Saint sent this from his Q using xda premium

Ok....so it does still happen....on my Netgear 7550, Linksys E4200, Linksys E3000, and almost every other network I connect to...it is really frustrating...

It happens to me when I'm in my apartment bedroom some on the far side (I normally plug it up at night to my right on the headboard) which is about furthest from my router I can get inside...but otherwise I don't have the issue when I'm closer. I've started wondering if the phone just doesn't pick up wi-fi as well, though in fairness I have a single-antenna fairly cheap Rosewill router (RNX-N150RT).

Change the wifi ip settings on the phone from dhcp to auto. Mine was set to default to dhcp.
Sent from my XT897 using xda app-developers app

slantyshanty said:
Change the wifi ip settings on the phone from dhcp to auto. Mine was set to default to dhcp.
Sent from my XT897 using xda app-developers app
Click to expand...
Click to collapse
I tried this and it still drops wifi...but for some reason wifi tether doesn't drop...still don't know if its hardware or software related

My phone keeps dropping wifi as well and it happens on every wifi I'm connected to and its very annoying.
Sent from my MoPho Q on the Now Network

megan23247 said:
My phone keeps dropping wifi as well and it happens on every wifi I'm connected to and its very annoying.
Sent from my MoPho Q on the Now Network
Click to expand...
Click to collapse
I am wondering if it is a bug with the phones software because it also drops on every connection I connect to also.....maybe we should contact sprint / motorola

megan23247 said:
My phone keeps dropping wifi as well and it happens on every wifi I'm connected to and its very annoying.
Click to expand...
Click to collapse
zrmxp95 said:
I am wondering if it is a bug with the phones software because it also drops on every connection I connect to also.....maybe we should contact sprint / motorola
Click to expand...
Click to collapse
I'd have to think you guys have bad hardware, or something else not playing nice... I have connected to MANY access points (even in different countries) and never had an issue with it dropping. I even make wifi calls for long conference calls, so I would definitely notice if it did drop...

zrmxp95 said:
I am wondering if it is a bug with the phones software because it also drops on every connection I connect to also.....maybe we should contact sprint / motorola
Click to expand...
Click to collapse
Yeah, I have the same issue. I've discovered that it doesn't disconnect if I'm within 5 feet of the access point, which isn't exactly a great option, but does suggest maybe a software fix or a straightforward hardware hack like the Atrix 2.

Ok so even after the update the wifi still drops....even when i am right next to the router....but I can say that when i am using WiFi tether it doesn't drop the tether connection....it all seems weird to me...
Sent from my Motorola Photon Q 4G LTE using Tapatalk 2

Possible solution - try this and see if it works for you
Was running into this problem on my new Pho Q (too fun calling it that), where it would drop wifi and report a connection was available on the left side, then connect again, every 15s to a min.
To resolve (at least so far now for me for about an hour):
Settings - Wifi - Menu - Advanced:
Uncheck Show Reminders
It seemed that having it popup a reminder of available networks could be related to it noticing my available network every few seconds, and it seems to have helped me. Try it and report back. :highfive:

Ok, seems its still happening, but far less often at least. When I have some time, I'll try to do an A-B-A test but it does seem better than it was before disabling the setting.

cmags said:
Ok, seems its still happening, but far less often at least. When I have some time, I'll try to do an A-B-A test but it does seem better than it was before disabling the setting.
Click to expand...
Click to collapse
I still seem to have this problem - anyone figure out a solution? I'm getting really tired of not being able to use wifi at home, since I get next to no reception... Gets frustrating really fast when it disconnects and reconnects every minute or so

JasonDelta said:
I still seem to have this problem - anyone figure out a solution? I'm getting really tired of not being able to use wifi at home, since I get next to no reception... Gets frustrating really fast when it disconnects and reconnects every minute or so
Click to expand...
Click to collapse
Someone thought it was related to smart actions - do you have any of those enabled?
I've never had any issues with wifi - and I've used many different types of routers and security models.

Have you tried changing your wireless channel on your router or gateway? By default most start on 6, so changing it to 1 or 11 might reduce interference from nearby wireless signals. Are you a long distance from your router/gateway?
Sent from my XT897 using xda app-developers app

arrrghhh said:
Someone thought it was related to smart actions - do you have any of those enabled?
I've never had any issues with wifi - and I've used many different types of routers and security models.
Click to expand...
Click to collapse
Not using Smart Actions (I use Settings Profile app from the Play Store instead)
UnicronAlpha99 said:
Have you tried changing your wireless channel on your router or gateway? By default most start on 6, so changing it to 1 or 11 might reduce interference from nearby wireless signals. Are you a long distance from your router/gateway?
Sent from my XT897 using xda app-developers app
Click to expand...
Click to collapse
It'll disconnect and reconnect even if I'm 2 feet from the router. I just tried changing to channel 10. I'll report back how it goes. I do live in an apartment building with tons of wifi networks, so this is a good suggestion. Thanks!

JasonDelta said:
Not using Smart Actions (I use Settings Profile app from the Play Store instead)
It'll disconnect and reconnect even if I'm 2 feet from the router. I just tried changing to channel 10. I'll report back how it goes. I do live in an apartment building with tons of wifi networks, so this is a good suggestion. Thanks!
Click to expand...
Click to collapse
Tried changing the channel, but still disconnects and reconnects often. None of my other devices (laptops, tablets, other smartphones) have any issues keeping connected. I'm still at a loss...

Anyone have any luck fixing this? When my wife's photon Q connects to our home network, no problem. No drops whatsoever. But when she connects to her work WiFi, despite a strong signal, it would drop every few minutes.

[Q] Nexus 5 and Telus Routers

Hey all,
I'm not sure if anybody else is having this problem, but for the last month I've been having trouble connecting to Telus routers properly. It connects to the wifi signal, but will not load websites about 70-80% of the time and many apps (YouTube, NHL, XDA, Playstation, Play Store, etc). When I switch to my data connection, the sites/app load normally. I don't seem to have this problem when connected to other places (ie. work, starbucks, etc). It's getting really annoying since I had to keep switching to my data to load a site, etc. Not to mention having to pay more because I've gone over my data serving.
At first, I thought it was my phone as it was also experiencing massive battery drain and getting really warm, so I got it RMA'd. But as soon as my new one came from Google, the exact thing happened. I couldn't even download apps/set it up while connected to my Telus router. I've already contacted Telus, and they've updated the firmware to my router, but I'm still having the same issue (altho not as bad, I think? It's only been a day).
Anybody else encountering this?

kattara said:
Hey all,
I'm not sure if anybody else is having this problem, but for the last month I've been having trouble connecting to Telus routers properly. It connects to the wifi signal, but will not load websites about 70-80% of the time and many apps (YouTube, NHL, XDA, Playstation, Play Store, etc). When I switch to my data connection, the sites/app load normally. I don't seem to have this problem when connected to other places (ie. work, starbucks, etc). It's getting really annoying since I had to keep switching to my data to load a site, etc. Not to mention having to pay more because I've gone over my data serving.
At first, I thought it was my phone as it was also experiencing massive battery drain and getting really warm, so I got it RMA'd. But as soon as my new one came from Google, the exact thing happened. I couldn't even download apps/set it up while connected to my Telus router. I've already contacted Telus, and they've updated the firmware to my router, but I'm still having the same issue (altho not as bad, I think? It's only been a day).
Anybody else encountering this?
Click to expand...
Click to collapse
Do a search for the many WiFi problem threads. I think those solutions are your best bet, I don't think it's specific to Telus routers.

bblzd said:
Do a search for the many WiFi problem threads. I think those solutions are your best bet, I don't think it's specific to Telus routers.
Click to expand...
Click to collapse
Thanks for the reply, but like I said, I'm not experiencing this problem on other networks. The problem only occurs on Telus routers.

kattara said:
Thanks for the reply, but like I said, I'm not experiencing this problem on other networks. The problem only occurs on Telus routers.
Click to expand...
Click to collapse
The general WiFi fixes still apply. Many people have a single router that they are having issues with, and it works fine on everything else they've tried.

bblzd said:
The general WiFi fixes still apply. Many people have a single router that they are having issues with, and it works fine on everything else they've tried.
Click to expand...
Click to collapse
Is there a specific thread/solution you are referring to? I have tried several fixes, but all to no avail. I'm not having the issue where the phone will not connect to wifi - it connects fine, and doesn't go orange. I've tried changing channels on my router, channel width, msdu/mspu, compatibility mode, etc etc. The problem only started about a month ago, and only on Telus routers (as far as I have seen).
I'm sorry if I missed something.

kattara said:
Is there a specific thread/solution you are referring to? I have tried several fixes, but all to no avail. I'm not having the issue where the phone will not connect to wifi - it connects fine, and doesn't go orange. I've tried changing channels on my router, channel width, msdu/mspu, compatibility mode, etc etc. The problem only started about a month ago, and only on Telus routers (as far as I have seen).
I'm sorry if I missed something.
Click to expand...
Click to collapse
Sounds like you've exhausted most of the options available on the router itself that would be recommended.
Try setting your phone to only use 2.4Ghz instead of Auto or 5Ghz, and as a latch ditch effort you can also try disabling Mobile Data (toggle it off manually or automated with Tasker/Llama) while using WiFi.

bblzd said:
Sounds like you've exhausted most of the options available on the router itself that would be recommended.
Try setting your phone to only use 2.4Ghz instead of Auto or 5Ghz, and as a latch ditch effort you can also try disabling Mobile Data (toggle it off manually or automated with Tasker/Llama) while using WiFi.
Click to expand...
Click to collapse
Yeah, I've already tried setting it only to 2.4GHz, but that doesn't make a difference either. I haven't tried disabling Mobile Data, tho. Will give that a shot, altho I honestly don't see that that will change anything? But I'll try it, regardless!
And more clarification, I am able to access things like Twitter, Tumblr, G+, so I am getting an internet connection. It just won't load most webpages on Chrome/Chrome Beta, YouTube, and other apps. Quite frustrating...!
Thanks!

kattara said:
Yeah, I've already tried setting it only to 2.4GHz, but that doesn't make a difference either. I haven't tried disabling Mobile Data, tho. Will give that a shot, altho I honestly don't see that that will change anything? But I'll try it, regardless!
And more clarification, I am able to access things like Twitter, Tumblr, G+, so I am getting an internet connection. It just won't load most webpages on Chrome/Chrome Beta, YouTube, and other apps. Quite frustrating...!
Thanks!
Click to expand...
Click to collapse
For sure anyone would be frustrated in the same situation, Hopefully you can get it solved. The mobile data trick has worked for many people with WiFi issues but is more of a temporary fix, I find.
I'm reluctant to even mention this but if you get desperate enough, perhaps give this app a try as well.
https://play.google.com/store/apps/details?id=com.brilliapps.wifiandmorefixer

bblzd said:
For sure anyone would be frustrated in the same situation, Hopefully you can get it solved. The mobile data trick has worked for many people with WiFi issues but is more of a temporary fix, I find.
I'm reluctant to even mention this but if you get desperate enough, perhaps give this app a try as well.
https://play.google.com/store/apps/details?id=com.brilliapps.wifiandmorefixer
Click to expand...
Click to collapse
Yeah.... I'm not quite that desperate yet. I'll update this thread once I try the mobile data trick. Thanks again!
EDIT: Unfortunately, the mobile data trick doesn't seem to make a difference, in my case. :'(

Its definitely the router, or something on your network causing you trouble. Disconnect every other single thing from your network and try. If not....its the router. Demand a completely different one from them.
---------- Post added at 10:17 PM ---------- Previous post was at 10:15 PM ----------
And if bad battery drain is still occurring, get gsam....and check Wakelocks. If its WiFi related, It will show that.

kj2112 said:
Its definitely the router, or something on your network causing you trouble. Disconnect every other single thing from your network and try. If not....its the router. Demand a completely different one from them.
---------- Post added at 10:17 PM ---------- Previous post was at 10:15 PM ----------
And if bad battery drain is still occurring, get gsam....and check Wakelocks. If its WiFi related, It will show that.
Click to expand...
Click to collapse
Thanks for the reply. I got a new phone, so I'm not having the battery drain issue anymore.
As for the modem/router, that's what I'm thinking. I've already talked to telus about it, but they couldn't figure it out. I think it may be a software update they pushed out, but they said they hadn't had any updates lately. I can't get a different one from them, as this is the one that has to be used for telus TV. I may end up just going up my own router to the existing modem/router. It's just frustrating as I'm experiencing this at another place that also uses telus. I mean, I can't be hooking up routers at every place that uses Telus, now can I? Lol
Sent from my Nexus 5 using XDA Free mobile app

I'd still try disconnecting everything connected to that router. Reboot it....and see what happens.
If its still a no go, then it really has to be it.

kj2112 said:
I'd still try disconnecting everything connected to that router. Reboot it....and see what happens.
If its still a no go, then it really has to be it.
Click to expand...
Click to collapse
Yeah, I'll try that (as soon as the network is free). I'll keep ya'll posted!

WiFi SUPER confusion, help please

Hey Everyone,
I honestly don't know if this is the right place to ask but I don't know where to start, with you, with google, with comcast, or Netgear. Here is the issue.
We have comcast internet and use a comcast approved Netgear N600 dual band cable modem. My wife and I both have Nexus 5 with Android 5.0. We also have laptops, a Roku 3, and PS 4, all hooked up via wifi.
IN the past month, our wifi on phones has gotten unusable. You try to browse a site, and it takes forever, usually a minute (not forever but long) to load the site, and then the site browses at normal speed. However, if you try to navigate to a NEW site, you have the minute load time, before that site browses normally.
The roku, laptops and PS4 all work perfectly via wifi. I did the speedtest net app on my phone, and it had 50 mb download, 13 mb upload via wifi. So connection speeds are perfect.
Its just that initial minute plus wait to actually have a website load each time, that is bizarre. Any thoughts please? Comcast says its the phone. Netgear says its comcast.
Oh, on ANY other wifi network our phones work perfectly. Love help. Thanks!
John

Have you rebooted the router? Remove power source for 1 minute. Always first thing to try.

rootSU said:
Have you rebooted the router? Remove power source for 1 minute. Always first thing to try.
Click to expand...
Click to collapse
Yes, I have rebooted the router. I have also done a hard reset on the router, restoring it to factory defaults, upon which I have to rename our network/set password etc. WHEN I do this, our phones function perfectly for a few hours, then the problem rears its ugly head again.

Certainly sounds like a router issue. Or at least an incompatibility.

rootSU said:
Certainly sounds like a router issue. Or at least an incompatibility.
Click to expand...
Click to collapse
How would I look for a compatibility issue? What exactly would I look for, a specification? This router worked fine for the first three months?

Well really what you need to do is troubleshoot by trial and error. If you could perhaps borrow another type of router and run it side-by-side... If it works OK, its a problem with your router and not your phone or Comcast. If it doesn't work, you've ruled out the router and identified an issue either with the phone or Comcast.
---------- Post added at 01:54 AM ---------- Previous post was at 01:52 AM ----------
Also try taking other devices both wireless and wired off the network to see if there are any conflicts. If anything has static IP addresses. Confirm they're not the same.

What part is taking so long? Is it the DNS lookup or the actual data transfer? I would run some nslookup commands from a phone to make sure resolution isn't the problem.

croikee said:
Hey Everyone,
I honestly don't know if this is the right place to ask but I don't know where to start, with you, with google, with comcast, or Netgear. Here is the issue.
We have comcast internet and use a comcast approved Netgear N600 dual band cable modem. My wife and I both have Nexus 5 with Android 5.0. We also have laptops, a Roku 3, and PS 4, all hooked up via wifi.
IN the past month, our wifi on phones has gotten unusable. You try to browse a site, and it takes forever, usually a minute (not forever but long) to load the site, and then the site browses at normal speed. However, if you try to navigate to a NEW site, you have the minute load time, before that site browses normally.
The roku, laptops and PS4 all work perfectly via wifi. I did the speedtest net app on my phone, and it had 50 mb download, 13 mb upload via wifi. So connection speeds are perfect.
Its just that initial minute plus wait to actually have a website load each time, that is bizarre. Any thoughts please? Comcast says its the phone. Netgear says its comcast.
Oh, on ANY other wifi network our phones work perfectly. Love help. Thanks!
John
Click to expand...
Click to collapse
It's only happening with mobile browsing, correct? Do you have the adblock extension installed? If so, try removing it.

bblzd said:
It's only happening with mobile browsing, correct? Do you have the adblock extension installed? If so, try removing it.
Click to expand...
Click to collapse
What is the adblock extension? Is that a program that would be on our phones or the router? This only happens with our phones, correct, but also ONLY on our home network. Any other wifi and our phones work great. At the same time, our laptops and ps4/roku work perfectly fine on our home wifi. Here is the breakdown
HOME:
Roku/PS4/Laptops Work Fine
Our 2 Nexus 5 do not
Other Wifi Networks
Phones work fine
For the first few months our phones worked fine on our home network as well. Its only in the past month or so that they started acting funky. Could it be something with Android 5.0?

It could be something to do with anything. Only you can rule things out.

croikee said:
What is the adblock extension? Is that a program that would be on our phones or the router? This only happens with our phones, correct, but also ONLY on our home network. Any other wifi and our phones work great. At the same time, our laptops and ps4/roku work perfectly fine on our home wifi. Here is the breakdown
HOME:
Roku/PS4/Laptops Work Fine
Our 2 Nexus 5 do not
Other Wifi Networks
Phones work fine
For the first few months our phones worked fine on our home network as well. Its only in the past month or so that they started acting funky. Could it be something with Android 5.0?
Click to expand...
Click to collapse
AdBlock Plus is a browser extension. It was a long shot but the exact same symptoms were happening to me when I had that installed on my phone's browser. Internet was working fine but websites would need a good 20-40 seconds before they would load.

I'm putting my money on the router since both your and your wife's phones are acting up. One phone, plausible. Two phones, highly unlikely. Have you tried a factory reset on the router? This could literally be anything from having too many neighbors with wireless devices to some weird improbable scenario with some QoS setting on the router. Short of borrowing a router from someone, a reset might help if things were working fine before.
While each possible scenario that could be causing your grief may be unlikely, the vast amount of possibilities just adds complexity to your situation. I mean, I remember when chipsets from different manufacturers wouldn't play nice together back in the 802.11g days...
Since your connection speed is fine, bandwidth wise, try running a traceroute from your phone to, say, Google or any arbitrary site, and see which hop hangs the longest... (Traceroute is like a glorified ping).
Try setting your DNS server to 8.8.8.8 (you can do that on your phone, in WiFi settings).
Try disabling any form of QoS on the router, or any kind of fancy proprietary features.
Try disabling the SIP firewall on your router.
There's many many things and I'm afraid it's going to be trial and error from here. While we can offer suggestions and assistance, the trial and error part is ultimately on you.