Strange WiFi problem on iPhone 3G after 3.0 update

renaud@allard.it wrote:
On one of the phones, I reverted back to OS 2.2.1 using DFU mode and it now works fine again. So it's not chipset/cable problem, it's really an OS 3.0 problem. The test also seems to suggest that encryption causes the problem.

I downgraded my FW to 2.2.1 using DFU mode and iTunes 8.1.1 and that did NOT help. Still the same bad WiFi connectivity as before or none at all. This is because the obviously buggy baseband 04.26.08 is still on my iPhone and I cannot revert it back to a previous version due to bootloader 5.09. Only 5.08 is supported. This *****. Come on Apple - do something!

I to have the same problem my Iphone 3G pay and go connects to my wifi network
and says it's connected but when i use any app like app store it drops the wifi then goes straight to 3G or even slower connection.

I went to the O2 shop I bought the iphone from they could not get it to work then after waitting a week I got a new iphone with 2.2 firmware it worked fine on wifi till I updated it to 3.0 again exact same fault it lets me join my wifi network then drops wifi as soon as I use any app that needs internet access.

the most anoying thing is there was updates for games on my phone and it said because this update is over 10MB you must use wifi to download it.

anyway still refuses to use wifi it shows up as wifi connected then drops it for 3G or lesser connection I am getting fedup with it.

when you do a search on google there alot of people with wifi problems after 3.0

I'm sorry if you have tried it already - have you tried resetting your wireless router (after the upgrade)?

It helped me.

I am extremely unhappy with 3.0 update, it added nothing useful, but screwed everything. All applications run slowly now, the wi-fi connection is like on my old iPhone (not iPhone 3G) - it means I loose it on the same spots where it was perfect with 2.2.1, it looks like iPhone consumes more power than with 2.2.1, etc. I wish to downgrade back!!!
Apple should provide this option, such as my 3G was almost perfect with 2.2.1.

Of course I will not purchase 3GS ...

yes to all of the above and still drops off wifi to 3G or slower connection after full reset of phone and wifi modem and router.

<quote>I downgraded my FW to 2.2.1 using DFU mode and iTunes 8.1.1 and that did NOT help. Still the same bad WiFi connectivity as before or none at all. This is because the obviously buggy baseband 04.26.08 is still on my iPhone and I cannot revert it back to a previous version.</quote>

Well, my iphone is a factory unlocked one. But I somehow doubt the baseband would be the culprit as it only comes into play for cell phone connectivity.
I would be very interesting to know if you reverted to 2.2.1 and used a backup to restore or set up as a new iphone like I did.

In fact, it would be interesting to know if someone having this problem tried to revert back, then upgrade again to 3.0 using DFU mode without using any backup to restore. Again I doubt this would change anything as some reported 3GS with the same problem.

I just tried the freezer trick and it worked for me. Go figure. I wonder how many of us (like me) that are having problems also have third party cases (like me). Perhaps the cases are a contributing factor to the software which seems to be causing a hardware overheating issue.

Upgrading the firmware on my original 2G iPhone from 2.2.1 to 3.0 resulted in the phone's not waking from standby/sleep when receiving an incoming call. Phone wouldn't ring, wouldn't do anything. Same with texts.

Popped it in the refrigerator earlier today for about 30 minutes (in a bag), and it now works fine on 3.0. Finally gave this a try after 2 days of intense trouble shooting, including countless restores, and even a firmware downgrade.

My wi-fi has been dead since the 2.2.1 update, and I just came to live with it. But after reading this thread, I just popped my phone back in the refrigerator for round two. Maybe this will fix my wi-fi, finally.

My problem is just with one specific network (shared from an aluminum iMac, as it happens): sometimes it works, and sometimes for hours at a time it doesn't. An iPod Touch on 3.0 hasn't had a problem yet (nor my MacBook) but my 3G does. (The same iPhone is OK on other networks--knock on wood. That may be just luck if the issue's intermittent.)

Symptoms:

* Network shows in the WiFi list, but doesn't show lock icon (even though it does need a password).

* Amazingly low bars shown in the list (even when standing 12 inches from the router that normally give me a signal far away).

* "Unable to join the network..."

Nothing helps--not even resetting network settings or plugging into power. Once it connects it's OK--but at the moment I can't connect at all, and it's been that way for hours. Yesterday the problem went away on its own eventually, but no such luck today.

It's not interference: I'm in a remote location with no neighbors and no devices on that frequency other than a single BT mouse which has never been a problem.

(I haven't tried a full wipe of the phone yet.)

Hi everyone, i'm new to the iphone i just get the iphone 3GS and I'm having truble with the WiFi, as everyone stated here my WiFi works perfect on any other device. it does show under WiFi that its on and locked to my WiFi but it DOES NOT download anything over WiFi it keeps going back to 3G its not working I tried to delete the conection and reestablishing the pass and it shows my WiFi but it just doesn't lock in too it, i'm very frustrated right now the phone is like 1 week old and I shouldn't have these problems already and one other thing my app icon names got mixed up for some strange reason basically app icons had wrong name from other apps on them. so if you guys have any suggestions please let me know I don't want to do any hard resetting because they phone is new

thanks

I am having same issue as your description,

"Unable to join the network..."

cannot find any solution yet, I did even try full wipe on the phone, no luck...

may consider sending back to local support desk soon if no solution is found... (need to take a half day off for it.....)

I am very disappointed on the upgrade, and apple does not seems to be taking care of the issue either (at least, up to now.....see how long this thread has gone?)

renaud@allard.it wrote:
Well, my iphone is a factory unlocked one. But I somehow doubt the baseband would be the culprit as it only comes into play for cell phone connectivity.
I would be very interesting to know if you reverted to 2.2.1 and used a backup to restore or set up as a new iphone like I did.

Mine is s factory unlocked too from Italy. And yes, I did set it up as a new phone. No avail. I guess the baseband is what a BIOS is for a normal PC. And as such it could affect power saving features of all integrated communications chips.

In fact, it would be interesting to know if someone having this problem tried to revert back, then upgrade again to 3.0 using DFU mode without using any backup to restore. Again I doubt this would change anything as some reported 3GS with the same problem.

Did that too. Does not help either. The tricky thing is that you cannot pinpoint when WiFi is woking or not. That is why many people think that - whatever they try - is a remedy. Most of them end up finding out that WiFi starts behaving oddly again after a short period of time.

In my case it does not find my WiFi at home anymore - regardless if I hold my phone right next to the router's antenna or not. Strangely enough it shows every other WiFi in Town when I walk around. And yes, my WiFi is set up correctly my laptop connects just fine and I also have a good signal strength. Also tried all kinds of WiFi settings and fixed or dynamic IPs. Nothing helps.

I still have had no luck getting my Iphone to use wifi yes many resets and yes delete 3.0 from itunes yes downloaded 3.0 and yes installed it as a restore again and yes many resets and yes wifi STILL DOES NOT GET USED WHEN AN APP NEEDS INTERNET ACCESS......

just incase i get another saying did i reset it LOL

mabe this is the iphone for canada where its -32

no not sticking it in the freezer every time i want internet access for appstore lol

maybe this is to help the sales of the new microsoft mobiles or HTC

I don't know about others but I will never buy another APPLE related product.
if its cheap hardware to cut costs or a software glitch they could at least have it as we are working on it on headlines on main itunes news section.

when you go to the O2 shops they say they have not herd anything about this issue.......I could have bought a real phone and have change or a laptop for the price of this.

Message was edited by: anthonyrae

don't waste time resetting or reinstalling. the only way is to get a repalcement from Apple while you are still under warranty.

This must be some kind of bug that happened on some iPhones. I have got my replaced and it is now working fine.

Problem here: you do not know if your replacemet phone will be compatible with os 3.0. There are quite a few who upgraded their replacement iPhone to OS 3.0 again and guess what - they ended up having the same messed up wifi connectivity.