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[Q] Wireless distance issues with Sharp IS03

I originally posted this in the IS03 sub-thread but received no replies.
Not root-related but since a little under a week ago, my IS03 has been having a real hard trouble with wifi when at home. If I move more than 4 meters or so away form the router, I cannot access anything.
When this happens, I'll disable/renable wifi (from 4-5 meters away or further) and one of two things will happen: 1. My network will not even show up or 2. My network will show up (with a 'good' or 'fair' wifi status) but when I try to connect, it will disconnect immediately.
What I noticed through the Wifi Analyzer app was that even when the Android wouldn't show my network on the network list, wifi analyzer still registered it about -70dbm.
I originally thought the router is to blame but both my wife's AU HTC Evo and my Amazon Kindle have no problems using wifi from the same distance.
I also thought that perhaps the cover I have for the phone may be collecting dust so I removed it to no avail.
Any ideas why the wifi in my phone is acting up?
Thanks.
UPDATE since original post: I moved my router (Linksys WRT160N V3) to a more central location and installed DD-WRT (TX Power power set to default 71) and the problem went away for about a week but now it has returned. Both my Kindle and my wife's Evo have no issues with accessing the internet through wifi from the other side of the apartment but the IS03 cannot.
If I try to connect to wifi and I am right next to the router, one of three things will happen: 1. It WILL connect but I cannot access the net. 2. The network will show up on the available network list but it won't automatically connect (will say the network is disabled. If I try to manually connect, it will immediately disconnect. 3. Network won't even show up.

The Intricacies of Teathering over wifi

Hi guys I recently lost my cable service and I've been relying on my inspire for wifi around the house lately. I thought I'd share a few tidbits with you that I've gleaned from the experience.
My inspire is running cyanogen mod 7 nightlies and I found that it only broadcasts wifi on channel 6 - very annoying because most routers ship with channel 6 as the default (at least here in the US)
This means that if there are wifi networks near you your range is going to be unpleasant. If you have a wireless router in your house make sure you change it to channel 11 - that tends to significantly decrease interference issues between the two devices. Pick up a free wifi analyzer program in the market it will let you scan all the networks in the area and show you the free channels - very helpful if you're setting up a network in an apartment complex! Just keep in mind channel 6 needs to be free near your phone if you're tethering otherwise you'll suffer from some drastically reduced range and speed.
My wireless router is running dd-wrt and can broadcast on channels 12-14 as well - European and Japanese standards. The FCC probably wouldn't like it but it can seriously push my wifi out of the way of other networks. The inspire can NOT SEE THOSE CHANNELS. Not even with cm7 - I believe a kernel or radio fix could be implemented which would be nice.
I've tried bridging and sharing my wifi tethered desktop with the rest of my network but I've run across a few serious issues with the windows 7 network stack. It hates the fact that I have and use so many networks and network adapters. I'm going to push my luck some more but at the moment I'm content having finally gotten them to work together at the same time so I can stream some movies to the other systems in the house while tethered with my phone.
The most annoying issue I've found lately is that at&t seems to be monitoring my use of unusual ports. Every few days I find that many applications I depend on stop having access to the internet over the tethered connection - the ports get blocked - all but port 80 which only allows basic browsing. The best way that I've found to fix this is to shut the phone down properly, pull the battery, and turn it back on. It seems to lose it's specific network address and gain full port access again.
Just some food for thought guys, I thought I'd share this stuff with you because of the issues I've had making it work. Maybe it will help others to be less frustrated.

Here is a list of wishes:
The ability to change the broadcast channel while tethering
The ability to view, use, and broadcast on channels 12-14
The ability to increase transmit power by a few mw through a userland interface

Thanks for the info and I'm really sorry you lost your cable service

Me too - this economy sucks

Interesting info. What app are you using?

issue: switching between access points in the same wifi network

i'm dealing with this weird issue,
i have set up a wifi network in my home consisting of a router and a repeater,and they have now eliminated the dead spots in my home.
I tested whether mobile devices can switch to the nearest access point when they are moved,while they are connected to the wifi network
laptops switched to the nearest access points as they were moved
unfortunately my arc was not able to...it depended on the same access point as it moved away, even if i keep it next to the repeater it would not pick it's signal.
this would happen the other way around as well if i connect via repeater and bring the phone near the router it would not pick router's signal
any work-a-rounds
HELP!!

Also running doom kernel i had to flash the wifi modules could this have affected in anyway
Sent from my LT15i using XDA

I know this post is a bit old...but a good solution for this issue is Best Wifi:
Description
Do you have a WiFi extender in your home or office, or even a second WiFi Access Point Name (APN)? You do? Then ‘Best WiFi’ is for you!
‘Best WiFi’ is a lightweight application that automatically switches between saved APNs based on their signal strengths. So if while you are pacing in the office or walking around at home, and the signal strength drops below the pre-set level, ‘Best WiFi’ will go through your saved APNs and automatically connect to the one with the best signal at the time.
Click to expand...
Click to collapse
This app works well to switch between different saved SSIDs that are listed in Android and has eliminated the issue of losing connectivity on my home network due to my phone staying connected to a weak signal and losing its ip address/not surfing.

Thank you

Same problem here, but this app does not do make any difference

Useful app, you deserve a "thank you"

[Q] Disable WiFi below a certain connectivity threshold

I have a really good router, and a really terrible car. In the mornings I generally sit in my car while it idles long enough for it to heat up enough that my breath doesn't freeze on the inside of the windshield, which takes about ten minutes. Since I have nothing else to do, I generally browse the internet on my phone. I also have a good enough router that even all the way across the parking lot in my car, I still get some wifi connectivity. It is enough that the phone recognizes it's connected, but not good enough that it can load pages. Therefore, it always gives me "page failed loading" messages. I generally have to manually turn on WiFi for it to default to 4G instead. Is there any setting I can change to where it will automatically disconnect from a wifi network if it has below a certain connectivity that is higher than default?

WiFi Roaming between AP's

I've done some research on WiFi roaming between AP's with the same SSID and posted my findings on the Google Product Forums but I'm hitting brick wall.
Anyone who has any clues on how and why this doesn't work? Here is the link that contains all my finding:
https://productforums.google.com/d/topic/nexus/93GcQ8O75q8/discussion
Situation:
I'm standing next to my WiFi access point downstairs, I have full signal bars and perfect connection. I then move upstairs (2 stories up) and move next to the AP located upstairs.
Expected behaviour:
The phone should notice that the AP it is connected to has very weak signal, barely 1 bar left near -85/-90 db which is hardly usable. On the next background scan it should also find the second AP has much better signal, around -45db and decide to 'roam' to the other AP.
Actual behaviour:
The phone maintains a persistent connection with the AP downstairs for hours and does not 'roam' to the AP upstairs causing bad connection and battery drain.
Anyone any idea's? Can we maybe start a discussion about this issue and get some dev involved maybe who can shed some light on how this is supposed to work in Android?

I have the exact same problem. My 2 accesspoints are both Asus wireless router RT-AC68U. It's very frustrating. I know this is an old topic but maybe there is a solution available? Or is the problem solved with Lollipop?

You could test it and let us know, I no longer have 2 AP's mainly due to this issue.

Same happened to me and i found my fix on an app called Wifi Jumper. It might help you.
https://play.google.com/store/apps/details?id=com.goramart.wifijumper&hl=en
Doesn't matter the SSID, it will just scan for a better signal every interval you set it to in the settings.

Yeah apps like that will do the trick but this is a workaround for the actual issue. The apps are user space whilst wpa_supplicant should deal with this. It will drain more battery than a proper solution.
The solution is quite simple, wpa_supplicant can do this but android does not put the proper directive into the conf file. It will need a code change in the android framework.

I can confirm on the new android lollipop preview my phone jumps to the high WiFi signal in my house. I have Asus ac68u and a airport used a extender and my phone never gets stuck on one signal.

Is it in extender or AP mode? If in extender mode the device does not need to roam, only in AP mode with the same SSID the android needs to actually roam..

The airport is a ap. I just set it to bridge mode in the airport settings so it can pull ips from the main router. They're connected thru a DECA connection. DECA is like moca but using different frequencies on coax wires.

Sounds like the issue is fixed if it roams before fully loosing the signal.
If you have root you could check the wpa_supplicant.conf to see if they have now added a line for the bgscan module. This would complete the theory.

Out of interest, do you have "avoid poor connections" set in WiFi settings?
I do find mine does roam, but I'm not sure if it is down to losing signal completely or avoiding due to poor