Database Users

HD2 WIFI Problem

I have a HD2 running Android, and recently I have had a problem with WiFI.
I have no problem connecting, an it works fine, however after using it for a bit (5mins when browsing generaly, as little as 5 seconds when downloading) it stop downloading and pages time out. However my signal still still responds when I move around the house. To get the WiFi working again all I need to do is turn it off then back on, however it is annoying doing this all the time.
I have tried everything, even flash back to stock via SD card and starting new. I have used several different roms (with different kernels) MAGLDR and CLK, everything I can think of to no avail. Can anybody help me out here.

[Q] Wifi isn't turning on/ not working properly

So i remember that i just rebooted my device and next thing i know is, wifi is stuck with 'WiFi is turning on'
Things i have tried to fix it : factory reset, hard reset and when none worked, paid a visit to lg service centre where it started working automatically. Came home, worked just fine but for 2 days.
Now it's been a week. I even flashed stock rom thinking it might be 4.4 rom issue. And nnope. Sane issue. So i guess that means is isnt software issue.
BUT here's what happens. Same modem, mother's galaxy mega2 connects, her laptop connects. I today tried connecting my phone to her phone's hotspot and it connected in first try. Confusion is, i don't know if it's modem that's faulty or phone ( idk if software or hardware )
Also, i noticed when i try to turn on wifi now, it shows no connection available and the wifi icon in drop down menu keeps blinking without being blue. I think it should just turn blue even if there if no wifi to be detected. Sometimes it stops blinking and doesnt turn blue still
It's so confusing
Any help will be much appreciated !

hi, it has almost been two years, did you fix the problem meantime?

HELP REQ - Stock Lollipop Note 3 N9005 - Random Reboots/Wifi-BT Clashes

Hi all,
Having a problem here.
Had my N9005 for about 18 months, never really had any problems with it - or rather, never really required anything of it which might manifest any problems.
I've always used Stock ROM's, soft-rooted.
Never triggered KNOX.
I'm currently running Stock Lollipop (latest Switzerland Open). Everything I'm about to elaborate is also the same using Stock Lollipop (latest UK Open).
I'm rooted on Lollipop using the method compiled by The TAMAS on XDADEV.
I root because my phone is work-critical, and so I use Titanium Backup to keep my data/calls/APN/SMS backed up and to make restoring easy, as well as to disable stock bloatware etc.
The problem may have pre-existed in pre-Lollipop ROM's, but the sequence of changes which caused it to be manifested included my need to update to Lollipop, about 5/6 months back.
THE PROBLEM - First and foremost, the damn phone reboots randomly. I become aware of it because it will vibrate for startup and play the Samsung startup tone and splash screen before booting to normal functionality. It can do this day or night, maybe 3-4 times a day. I have no error messages or warnings, it's done it while in my hand, while plugged in charging, while out and about, in the car, on wifi, on data. MOST times it reboots. SOME times it just shuts off and I don't realise it's off until I go to use it, or get a call on a second phone to ask why I'm not responding to calls or messages.
When it reboots itself, if I go to the Samsung Battery control panel pane and take a look at the battery chart it will show a gap which is longer than the time it took to reboot, and a shift in the battery meter level.
But, that's not the only possible symptom or problem with the phone.
I've noticed also that my WIFI does a lot of crapping out, or slowing to a crawl, even on my home AP. I've reset AP's, reset networks, reset the phone, forgotten and then reattached the AP in WiFi Settings. So I downloaded the Ookla Speedtest App, to see this issue in black and white, and sure enough, even though any other Android or iOS or Windows or OSX device in my place can connect via Wireless AP to my fibre connection and get great consistent throughput, the Note 3 can often appear crippled...
At it's best, it responds to ping quickly on the Speedtest app, and leaps up to the 30-40Mbps range with consistency for download, and up to 17-20Mbps for upload. This is the least I would expect it to do, my target standard.
At it's worst (which can be 'most of the time') it responds slowly to ping, and either struggles to get over 250Kbps download and maybe a crazy Meg or two for upload, consistently, a slow grind; or it may oscillate extremely wildly between slow and high speeds before eventually settling to unacceptably low transfer rates.
Up to press, I've been trying to chase these problems in isolation, believing them to be unconnected.
No success.
I've reflashed several times. I've Factory Reset. I've wiped data and cache. I've reinstalled and restored from Titanium. I've reinstalled and restored nothing but my SMS's and Call Logs. I've reduced my installed apps to bare minimums. I've tried it with a MicroSD installed, and without. I've bought another battery and replaced it. I've tried it in its case and without its case.
Then I started thinking that the problems were all the same thing, and stemming from the same root.
It suddenly occurred to me that my use of the phone changed significantly at the same time as I moved to Lollipop.
I need to be on Lollipop because apps and hardware that are critical to me are Lollipop dependent.
All at the same time, I began using a Moto360, a Bluetooth Receipt Printer and a Bluetooth Credit Card Reader, all of which are deficient in functionality or in some way hamstrung by not using Lollipop.
So I had gone from occasional BT user (maybe PlayerPro plus a BT link to headphones or my stereo occasionally; when needed, BT speakerphone in car) who usually turned BT off manually to preserve battery life, to a constantly connected BT user...
So I went back to Speedtest app, and tried to test the WIFI connection again. Sure enough, it was pitiful. Then I simply disabled BT on the N9005 and ran the test again, and had full 'through the roof' speed ratings.
I've tried this back and forth hundreds of times now, and it is predictable and established. BT is somehow crippling WIFI on my N9005.
I've tried running the phone on either wifi or data only, with BT off, and had a couple of days use at a time without any restarts. Put BT back on permanently, and the restarts resume within hours.
I'll be honest, I've even been cursing and swearing at my BT devices, because BT sometimes struggles to even maintain a continuous connection. I get vibrations all the time on my Moto360 indicating that the phone, which is on my person, has disconnected from the watch again, perhaps just for moments, sometimes for minutes, resulting in the watch eating battery life, trying to get reconnected.
I'm convinced now that all these things are related, and the problem lies somewhere in the interaction between BT and WIFI in my N9005.
It seems likely that I never noticed the problem before because I never required continuous BT connection before the point where I installed Lollipop.
Downgrading the ROM isn't an option. Leaving BT off isn't an option (nor should they have to be, on an 18 month old £600 smartphone).
Does anyone else have experience of this? Has anyone else had problems that they now suspect might be this same problem? Does anyone understand what's going on hardware/software wise, or have experience of a solution to these issues?
I'd appreciate your input urgently, even if only to affirm that I need to go to the inconvenience of temporarily buying another phone to replace this, while I send this away for a warranty repair.
Is this even a recognised hardware fault, or would I just get back an identical unit which is crippled from being able to perform as I expect it?
Please help.

Wifi constantly disconnecting and turning off

Guys,
I can't be the only one experiencing this. I've tried it all, even bought a new WiFi setup with all the bells and whistles, still the same problem.
WiFi not only disconnects it completely turns off and after a few seconds turns on again and around and around we go.
Sometimes it's on and stay connected but as soon as I do anything more then surf the web or instagram, for instance downloading a file, it turns off again and goes into spin.
Am I the only one?
I've tried stock rom incl the newest firmware since a few days. Rooted, unrooted, two different custom ROMs. Nothing helps.

Faulty device mate. Especially if you have tried everything.

Wifi stop working in sleep and after waking up

Hi, im having this problem for a while, and some other phones are showing this problem also (here)
in summary, phone connect to WiFi, works great, turn screen off, put phone down, and after a while, phone is now unreachable. can't connect to it if i have a ftp server on it for example, can't connect on whatsapp on the PC cause it need the phone connected to work, messages won't arrive, or arrive after 15 minutes of delay.
if i pick up the phone, unlock, WiFi does not work, it keep showing only the "up" arrow and no "download" arrow. can't connect to internet, can't connect to local PC (VNC for example) nothing works. after 30 seconds or so, it comes back, and internet works. sometimes it does not. disabling WiFi and enabling again, everything works fine. if put to sleep, everything start again.
the weird thing is, usually after update to a new version of MIUI (for example, the last 12.0.5.0 a few weeks ago) the problem goes away for a few days. always works great, every time, no problems. a few days later, the problem appears again.
tried everything i could find, no option helped, tried even disabling magisk/xposed, etc, to make sure no "mod" was causing it, nothing.
my only options now are formatting and starting from 0 or try another ROM, like LineageOS, but i'm trying to avoid cause i have tons of customized apps, bunch of banking apps, and everything works fine, except for this one problem.
any help appreciated!
PS: during the whole time, the wifi do not get "disconnected", it remains connected but not working. also tried different routers, no change. using only 2.4ghz.

I installed Lineage OS, the problem didn't show up anymore.
installed all the apps previously installed, everything still working fine for over a week.
I guess was just software related...