Develop Bugs

[Q] WiFi connectivity issue

I have been using Note 2 N7100 running 4.1.1 for a week now but only a couple of days ago started experiencing WiFi connectivity issue at home. The problem I have is it would lose Internet connection and then disconnects from my wifi router. When I opened the wifi menu it says my router is not in range. Turned off wifi and then on again and it connected just fine. However, after a while I lose Internet connection again and then router connection as well. In addition, my PC and other mobile devices started having connection issues. So, I restart my router and everything seems to work normal again until I turn on wifi on my Note 2. The problem reoccured again until I decided to turn off wifi on my Note 2 and so far my wifi connection is stable. I did try to use static IP and for a moment it seemed to work fine yesterday but today it messed up again right after I got home and turned on wifi on my Note 2. I also reset my router to factory setting yesterday and I don't want to reset every day.
I remembered that I did a software update at work on my Note 2 two days ago but it's an update from Samsung. I forgot what the update was for. Is there any chance to undo this update just in case it caused the wifi problem but without having to root the phone?

try to add the ip and mac address of your note 2 into the router.

Bluetooth and WIFI fix?

So I'm on official cm 10.2 and I have a problem where if I connect to a Bluetooth device my WiFi goes to crap. I've done a full nights research on this problem and apparently its pretty common post android 4.2. The only fix I have read about that seems to work for people is to get a duel band router and run 5GHz WiFi. So before I go buy yet another router to try to solve this problem I would like to know if any of you have run into this problem as well, or do not have it at all, or any fix other than the 5 GHz router? Is stock ROM having this problem as well? PA?
Thanks in advance
Your Bluetooth must be on and connected and in some cases you have to run speed test.net to see it get slow but mine simply loses signal after I try to surf. Or gets so slow as to be unusable. I'm streaming audio to a Bluetooth headset.

Most devices behave this way because bluetooth is also on 2.4ghz as well. A modern inverter style microwave oven in the kitchen can also FUBAR WiFi too because they also operate in this band. If you are that heavy of a user 5ghz would probably help...though keep in mind 5ghz doesn't travel as far.
Sent from my Nexus 7 using Tapatalk 4

I have the same problem with Nexus 7 android 4.3 but not with my LG optimus L9 android 4.2.2 phone. Wifi and Bluetooth both works fine with the phone but not with Nezus 7
Update: I solved my problem by buying a 2.4Ghz / 5Ghz dual band router.

Intermittent WiFi Dropouts?

I got a Tab S 10.5 a few weeks ago as a replacement for my Nexus 10. Overall, I feel like the Tab S is head and shoulders above the Nexus - but I've had some strange issues. I've had the wifi signal intermittently stop responding - it seems to be more prevalent on my 5GHz network using 802.11ac speeds but I've experienced it at standard 2.4GHz connections as well.
I haven't rooted the tablet yet. I thought at first it might be my wireless network as I hadn't used any other devices that were 'ac' capable even though I have a pair of Netgear R6300V2 routers bridged across my home. However, these wifi signal dropouts persist only on the Tab S - if I turn wifi off, then back on, connectivity is restored. My Galaxy S4, Chromecast, PC, DVR, all stay online just fine.
Has anyone else had this issue? I got my Tab S with the Samsung Book Cover - which I love, but it almost seems like it happens when I hold the Tab a certain way.
Thanks for anyone who can give any feedback.
Sent from my SM-T800

Did you connect your Tab S with your S4 through SideSync at one point?

Yes, I have used Sidesync. I disabled remote notifications, but occasionally still get a pop-up that remote notifications are enabled even if I haven't used sidesync in days.
Sent from my SM-T800

I too suffered wifi drop-out and Bluetooth issues. Following this thread (http://forum.xda-developers.com/galaxy-tab-s/general/heads-sidesync-bt-wi-fi-bug-t2828911) I realized that there is a problem with SideSync. Even when not connected it sitll tries to communicate with the tablet and affects the wireless components. I removed Sidesync from my Note II and clear the data from SideSync on the tablet and for the past week I have not ahd any issue with Wifi or Bluetooth.

Thanks. Side Sync Sux.
Brilliant. Thanks. I was having a big problem with 2.4ghz wifi. I though there must have been some interference. 5g was fine. Tried chaining channel and all sorts. Would have thought it was my router but I have two with same prob just on 2.4ghz. It was happening to my phone and tablet, but then noticed only when the table was connected to wifi. Just disabled Side Sync and now the wifi is blazing.

Nikon camera wifi connection problem

I have a connectivity problem with my S4 mini. I own a Nikon camera with connection feature to a mobile device through wifi. The camera starts transmitting a wifi network like a hot spot, in which i can connect my phone and through Nikon's app to take pictures or download existing ones to my phone. If i use a Samsung A3 i own with stock rom the connection is immediate. When i try to connect with my Samsung S4 mini (i9195) running the latest cyanogen 12.1 rom, i never pass the "getting ip address" stage of the wifi connection. Can anyone help me with this problem?

The same problem occurs on two Oneplus One phones, running resp. CM12 and CM12.1
On the CM12 opo I by now get as far as getting connected, but further negotiations keep on going until the camera gives a 'refused' message.
On the CM12.1 opo I still am in the phase of getting the WiFi connected. Setting it to WPA2 AND adding the network's gateway did help on the other phone.
The same camera connects without any problems on our Galaxy NotePro tablets, running resp. stock Android 4.4.2 and 5.0.2
There should be a solution, but until that moment I consider this a probable bug in cyanogen mod.

wifi issue

Hello how to fix wifi always diconnected? It sometime cannot connect to saved wifi connection because really poor connection. But my samsung phone can easily connect to that poor connection with no problem at all? Does the gx8 wifi hardware not the best like samsung phone? I tried anything but no luck at all to increase the wifi connection

Cannot discover my Wifi
IzArsha said:
Hello how to fix wifi always diconnected? It sometime cannot connect to saved wifi connection because really poor connection. But my samsung phone can easily connect to that poor connection with no problem at all? Does the gx8 wifi hardware not the best like samsung phone? I tried anything but no luck at all to increase the wifi connection
Click to expand...
Click to collapse
Hi,
I am having also some problems with my WIFI connection. My wifi connection is not on the list and phone is not connecting. All other connections(from neighbours) are ok. I have had this problem in the past and i managed to solve it with a change of the WIFI name and reboot, but now i get it again. Why is this happening ?

IzArsha said:
Hello how to fix wifi always diconnected? It sometime cannot connect to saved wifi connection because really poor connection. But my samsung phone can easily connect to that poor connection with no problem at all? Does the gx8 wifi hardware not the best like samsung phone? I tried anything but no luck at all to increase the wifi connection
Click to expand...
Click to collapse
Solved:
My router connection was on "auto channels" and i changed that on Channel 6(or any other channel you want) and solved the problem.