Yahoo Mail problems on IPhone

I got that same response, and had already told them that I tried to do those things, so this is what they told me in response.

Thank you for writing to Yahoo! Mobile.

I understand that you see an Invalid ID or password message when signing
into your Yahoo! Mail account on your iPhone. I apologize for any
inconvenience this has caused you, and I'm glad to be of assistance.

Our Engineering team is already working on a possible fix for this now.

Thank you for your patience while we work to resolve the issue you've
reported.

Thank you again for contacting Yahoo! Mobile.

I attempted to open the YouTube app yesterday and it kept popping up with a message saying that I need to first connect to the internet through iTunes. I'm not sure how long this was going on for, since I didn't try opening YouTube when my mail first failed, or if the 2 issues are related in any way, but after I tried a fix for the YouTube issue, my Yahoo mail is now connecting fine. I tried adding a new Yahoo account also, which I was not able to do before, and that also worked without problems. The YouTube fix involved replacing files, so I'm not sure if I can post it here...

This worked, however 6 hours later I'm back to the same place unable to download Yahoo mail

After reading some of this I'm wondering if this is similar to what I've noticed. I can delete my YAHOO account from the phone and then re-enter the same exact account back into the phone with the WRONG password and it WILL validate. Crazy!

Had the same problems with a brand new iPhone today. Tried everything listed in this forum and nothing helped. So then I opened Safari and went to the Yahoo web page and decided to try and and log into yahoo mail that way. It worked, so I went back to 'Mail' and it immediately started loading all my yahoo emails. Problem solved! Hope this helps others!!!

Same **** problem, just bought the new 3GS upgraded from the 3G. Yahoo Push mail is not working anymore. I'm ready to return the phone for this reason & go back to my 3G.

I have a different problem with Yahoo, and I'm hoping other Yahoo users can try. I just got my iPhone 3GS. I'm in Canada, and use rogers, which uses Yahoo for their email services.

If I try to email, lets say, a map from my iphone to anybody, rogers.com (yahoo) seems to strip it out. All that comes through is a text message email with no link to my Google map. However, if I send the same email through my iphone over gmail, all is well. The email comes through with the link and an attached VCARD.

can somebody please test that is on Yahoo?

This is how I did this:

Maps => Drop a Pin => Share location => send email

Thanks

-Paul

Im having the same issues. My buisness Yahoo account worked fine on the 3G for the last year but I updated to ver 3.0 software 4 days ago and I haven't been able to send or receive email ever sense!

Come on Apple WAKE UP !!!

I am having a similar problem with my Yahoo business mail. I am able to receive emails just fine, however after I updated to 3.0 I am no longer able to send emails. It shows the emails as being successfully transmitted, but it never arrives, and a copy of it never shows up in the sent mail folder. I talked at length with Apple and AT&T and they said it was definitely a Yahoo problem. I spoke with technical support over at Yahoo and they were completely useless. I followed their instructions and it messed up my phone so bad that I had to restore it. Yahoo also claims, now, that business mail does not support "push", which it did in the past and still does. I have no solutions, and need help. Pray for Mojo.

There is another thread on this topic:

Topic : Unable to send mail (Yahoo! Mail) after upgrading to OS3.0

http://discussions.apple.com/thread.jspa?threadID=2052513&tstart=0

I'm having the same trouble with yahoo sending a contact or (sharing) a contact. I see the attachment in the email before i sned it but after it's arrived to whomever i send it too it is just a buch of jarbled text. I can send it from my gmail account or my exchange work account and it goes through without trouble. Have you found a fix?

Can you tell me the contact information, such as phone number and URL of yahoo mobile support?

Thanks.

I'm having this same issue with sending VCards from my Yahoo account. I have 3 email accounts set up on my iPhone 3GS: Yahoo, Gmail and Exchange. I did a separate test from each email account, where I send a shared location email to all 3 of the accounts. Here are my findings:

From Yahoo, to Google and Yahoo I get the garbled text and no attachment
From Yahoo, to Exchange, I don't get any text or attachment.

From Exchange or Google, to Yahoo, Exchange and Google I get the attachment.

So basically all the tests from Yahoo failed, and all the tests from Google and Exchange worked fine. Does anyone know how we can fix it?

I have traced this issue the the server used by the pre-installed Yahoo! email client on the iPhone. I set up the same email account as a POP manually and sent a vCard with success. Switched back to the Yahoo! pre-installed settings and the garbled failure returns. I have contacted Yahoo and my case has been escalated.