iPhone, iPad & iPod touch

I have two iPhones, one on 2.2.1 and the other on 3.0.1 and it seems that the WiFi stays very strong with full bars on my iPhone running 2.2.1. However, on my other iPhone running 3.0.1, the WiFi signal constantly fluctuates. The WiFi signal starts out with a strong signal and full bars then it will all of a sudden drop the signal strength down to 1 bar due to a weak signal. The funny thing was, I looked over at my other iPhone and the signal was still strong with full bars.

Here are the facts, both iPhones are on the same wireless network (Home Router) and they're both jailbroken with the same exact applications installed from Cydia and Appstore. I even have them both setup identical, down to the Auto-lock feature, theme and clock settings. The only thing different between the two is the firmwares and that one is unlocked with yellowsn0w (2.2.1) and the other with ultrasn0w (3.0.1).

So now it's been 35 minutes and I've witnessed my iPhone running on 3.0.1 go up and down on the WiFi signal strength bars about 16 times. Most of us know that the iPhone is designed to detect the strongest network signal and it will then determine to use Edge, 3G or WiFi network at that time. So when my WiFi signal got very weak, my Edge icon appeared representing that the Edge network was the strongest network signal I had at the time. Edge was the strongest because I don't have access to a 3G network since I'm with T-Mobile carrier. This always happens no matter where I go and no matter what WiFi network I'm using. So what does this mean? I've also experienced this when my newer iPhone was on firmware 3.0 as well before I recently updated to 3.0.1 firmware. Is it possible that it may be firmwares 3.0 and 3.0.1 causing my WiFi signal to constantly fluctuate? Or is it a problem with the jailbreak for these particular firmwares which caused the WiFi signal to fluctuate. I'm not sure because as soon as I updated the firmware, I immediately jailbroke my iPhone. So I really don't know if this is a problem on a non-jailbroken iPhone yet.

Please leave a reply and share your experiences and let us know if you own a jailbroken iPhone or a non-jailbroken iPhone as well so we can try to narrow it down to the source of the problem. Who knows, it may be on Apples end as well. Considering the fact that there are iPhones overheating. Please leave your feedback.

I want you to watch your WiFi signal bars to see if it gets weak at any point while streaming, downloading, surfing the web or playing games that require Internet connection. Oh, just in case this is the problem for you too, DO NOT attempt to downgrade your firmware. You may get an error from iTunes when trying to downgrade and It's not worth the risk to lose your jailbreak if something goes wrong because there are no current jailbreaks for the firmware 3.1 as of this day that I made this post. We will just have to wait until a jailbreak becomes available for 3.1 and see if firmware 3.1 will fix the WiFi problem that firmware 3.0 and 3.0.1 had. Well, let me know the outcome after you test your own iPhone.

how i get wifi to watch my slingplayer on my iphone 3gs when im away.

I have had a ton of issues with the 3Gs wifi connection. Downloading movies on the 3Gs via wifi is a pipe dream. I was curious if it was just the jailbreak so I undid the jailbreak then purchased a $15 movie from itunes. Well it only took 4 minures before the download stopped.
There are a couple of threads in the apple discussions that I am participating in.
some swear that a static IP is the solution, some think changing DN servers is the answer, some say that the airport extreme is the answer. So my question continues to be, why does the 3G operate flawlessly while the 3Gs doesn't.
Below are some sinppets from my experiences. Sorry for the long post


I can run speed test after speed test and get decent results. A 15 to 25 second test is a mere snapshot of the actual performance. The issues I am having with files 20meg or more. In my case I can not get a sustainable download speed and maintain a connection to complete the download. I have turned off the lock screen ( set to never). This even occurs downloading from iTunes. It happens with any wifi connection I have tried. With the 3g I never experience this anomaly.
I have worked with a couple of the forum owners and website owners on this. One of them told me that others were having similar results.
Like I said small files I don't have any issues. Large files are a no go.



I am fortunate enough to have a 3G and a 3Gs so I was able to compare side by side.
Equipment
Linksys WRT610, Apple Extreme, Linksys WRT54v2.
The cable mode should not matter because the router talks to the cable modem not the acutal device.
In testing the 3G would pull down a movie at around 640KB steady where the 3Gs would fluctuate between max 180 KB and 50KB.
So I got a replacement, same thing.
Its almost as if the 3Gs doesn't realize it has the wifi bandwidth or Apple installed an artifical bandwidth limiter for the 3G network and tied it in to the WIFI as well. 3Gs (s) for slow


threw this on the other thread regrading the 3Gs Wifi

latest test
2 3G 16GB iPhones
1 2nd Gen 16GB ipod Touch
1 Dell XPS 1530
1 Dell SPS 1730
2 3Gs 32GB

1 Apple Airport Extreme
1 Linksys WRT610

Both Routers were set up with WPA, Auto channel select, dynamic static address for the devices (cool feature).

Same file was pulled down and was about 200MB.
2 3G 16GB iPhones (450 to 480 KB/sec)
1 2nd Gen 16GB ipod Touch (395 to 420 KB/sec)
1 Dell XPS 1530 (575 to 650 KB/sec)
1 Dell SPS 1730 (580 to 650 KB/sec)
2 3Gs 32GB (ran up to around 400KB then quickly dropped to around 130KB down to around 40KB, about 25 to 35% of the way into the download, the download stopped.)
Two routers from different companies 6 devices that provide decent consistent downloads and then there are the 3Gs.
I am just not convinced that any router setting is going to make the issue better.

Fortunately, I have a 3G tower literately in my backyard

i dont have any problems with my wifi conection

I had the same issue with WPA on my Linksys WRT54 at home. I would connect to my router, but no internet access. This was happening with my 3Gs and IPodTouch. All of my laptops, AppleTv, Wii, etc did not have problems.
After some Googling I found some post of the same issue I was having and the explanation was that ther is some problem with the current FW (I am on 3.01 in both devices), and specifically with some Linksys routers. The solution was to go to OpenDNS.
I manually changed the DNS on both devices to 208.67.222.222 , 208.67.220.220 and they are working great.
Hope this helps.

sometimes my 3Gs kicks out of wifi. then when i re-enter my wifi code, it recognizes the wifi for about 1 minuite and kicks off again. so i reboot and the problem is gone. but it does happen here and there.