HELP! "software" problem kills internal microphone iPhone 2G
My first post here...
I've been searching for an answer for a week on the net and on many different forums, but haven't found any answers yet. :(
Maybe someone here on the forum can help me out?
Here is the problem:
I have two iPhones 2G on my desk right now... One belongs to my wife, the other to my sister in law. 3 weeks ago, my sister in law's 2G "lost" the function of the internal microphone WHEN RECEIVING OR DIALING VOICE CALLS. The microphone works when you use the "Voice Memos" app from apple. It also works when you put the call on "speaker" mode. That is why I think it's not a hardware problem, since the mic seems to work with other apps. Hope you guys are following what I mean :)
My wife's iPhone 2G had suddenly the same problem. I searched for answers on the web but couldn't find any answers as mentionned above. I then tried to reset the phone, with NO SUCCESS. After a few tries, I decided to restore the iPhone with the original 3.0 software, then I created a custom IPSW with PwnageTool and jailbroke it. IT WORKED!!! :)
5 days later, with no reason, in the morning after answering a call, my wife tells me the others can't hear her at all, except if she is on speaker mode. And the quality is very bad (she seems far away). Holes are clean, iphone is clean, so it can't be anything blocking the mic. And again, the "Voice Memos" app has NO problem whatsoever to record sounds from the internal mic.
I decided to restore the phone again (what a pain...) and the result this time was 0. Keeps having the problem. I even restored a few times on 3.0 and tried redsn0W with no success either unfortunately. I even upgraded to 3.0.1 and to 3.1 to see if there is any change, used redsn0w for 3.0.1 jalibreak and the newest Pwnage Tool for 3.1 jailbreak. I even reated 2 custom IPSW files, one with Bootloader 3.9 and the other with 4.6 (no clue if this should/could help, I just did since I am desperate...). Installing either the one or the other gives NO CHANGE at all. Internal microphone still works very well with "Voice Memos" app, but not at all when taking a call or when calling someone.
I tried the "headphones" trick, plug in fast and plug out fast, but no changes :( . When I change the volume, it shows "ringer", NOT "ringer (headphones)", so I think the headphone jack problem can be ruled out!
Yesterday I received my sis in law's 2G iPhone by mail, since I told her I managed to fix the problem last time. I tried all the steps mentionned above (taking hours and hours) with her 2G phone, no success :(
Now I have to sad ladies asking me everyday if I was able to fix it, and I have to give them a negative answer...
Obviously, going to an apple store or sending it is NO OPTION, since these are 2G iPhones (out of warranty) and I am based in Switzerland (weren't sold there...) I bought one in NYC 2 years ago and the other one in London 18 months ago.
I tested the phones with 2 cell providers (thought maybe this would make a difference), Swisscom and Orange, but it obviously didn't...
Could anyone be so kind and let me know if I'm totally stuck here? If there is a PROVEN solution? If this is a hardware or software issue? If there is a workaround?
If anyone can help me solve the problem, I'm willing to make a little donation on your PayPal account, or invite you for a fresh beer next time you are in Switzerland!
Thank you very much everyone for reading this post and for your constructive answers! And sorry for my english...