Strange WiFi problem on iPhone 3G after 3.0 update

I've just watched the video you posted, it's very good. Good job.

Thanks, jimbob2010, you'll be happy to know at least 2 iPhones have been fixed with the heat gun already. It's nice to provide a safer alternative.

Also, I plan to make a 3rd video using your technique with the soldering iron. However, I've never done the repair using your method so I'm just going to explain how you did it and link them to your forum post. If you have a YT channel or blog or something let me know and I'll link to it too. This will give people 3 methods to choose from, two of which that don't risk the whole board.

just realised that it is one month since successfully baking my iPhone 3G 8GB. still works as it should, even after updating to OS 4.1 😉

reading all the posts of successful and failed bakings I assume, having the right temperature might be crucial. (leadfree) soldering always was a kind of a tightrope walk: reaching (and maintaining for a certain time) the necessary temperature for good soldered joints without damaging the pcb (e.g. deformation or melting of plastic parts or the laminate of the pcb or blowing capacitors).

Thanks for the update, paraglider, mine has lasted the past month too.

Temp is obviously critical, however, some people have reported failures even though they were careful with the temp. Therefore, I'm thinking the heat gun is the safer way to go.

Another possibility is to add mass to the oven (cast iron pans, etc.) to even out the temp distribution in the oven and stabilize it so the oven doesn't fire up mid-bake to try to bring the temp back up. It may be that as the thermostat notices the temp falls it may kick in the heating elements causing a short term spike that kills the board.

Even though the oven worked for me, I'm not comfortable with it now that I know how to do it with a heat gun.

So I don't think I have quite the same problem. My phone sees the wifi but does not connect over it- it tries to connect over 3G, which won't work if I'm trying to use the remote app. The 3G does work and wifi will work as long as I turn off 3G, but the **** 3G won't turn off. I'm not quite ready to bake my phone (it overheated a little while ago and now my screen has pixel problems where all black is red) but if I could just make the **** 3G stay off I'd be fine.

One more success reflowing with the heat gun!!!

It's been working for an hour now.... heavy use 🙂

All the weekend working.

This seems to be the way of fixing the problem!

Mine is still going strong after few weeks of usage!

btw: My jayjay70 account was disabled by security reasons??

Would anyone have any idea why a 3G with 4.x would keep pestering me with the wifi password screen?

HI Guys !

SO i got the sam problem on my iPhone 3G... after upgrading to 4.1 my wifi was killed...

So i made everything and nothing helped except this solution ! Its a lil bit dangerous but MY 3G wifi is working now JUST FINE !

http://www.iphonetiquicia.com/iphone-wifi-oven-trick/

** good freeks who discovered this solution !! ** GOOD !

I hope it will help you !!!!!!

i can confirm that heat gun fix works!!

sorry for my english.
I reflowed iphone with a heat gun first time and it worker for a few hours, then i decided to do it a second time and it worker for a week, "guau", nothing to lose, i did a third time and it goes running for a week just now till... how much time?.
I think it's the cheapest and secure repair to this problem.

For those of you with no technical skill or heat guns or re flow ovens, I fixed this problem with a 40 watt soldering iron. Here's how...

http://www.snackyserve.com/iphone3g_wififixed/index.html

I tried the soldering iron method tonight. It showed a little wifi life -- noticing the home network -- but I again had the problems of not being able to connect and asking for the password frequently. I may try it again with the iron for a few seconds longer, when I get another two hours to spend on it.

Approx. 10 weeks after reflow soldering the wifi function of my iphone is gone again 😟