Can't send MMS on O2, 4.2.1 - iPhone 4

Hi, my Dad had a similar problem on his and it turned out he had the mms switch turned off. You've probably already checked this but I thought it was worth a mention. Settings/messages/mms messaging.

My wife and I are having the same challenge, as are others who have posted in the O2 support forum. Still no solution though. Hope it's sorted ASAP as I use MMS a lot.

I updated my iPhone 3GS to 4.2 last night. This morning, I couldn't select MMS from the photo library or go into my texts and select the camera icon. After doing a few quick searches all I found were posts like these.

Oddly enough, I don't have an MMS option in my messaging settings...it seems preposterous Apple would turn off MMS or make such a weird error in an OS update...and then I thought, duh, restart your phone. I always forget to do that when updating my iPhone.

So, just restart the phone. All the normal MMS options showed up. Hope it works and you all aren't experiencing some other issue.

Message was edited by: sarush. Screwed up the MMS acronym.

I'm having the same trouble with my iPhone 4 on o2 as well. Although, it only seems to be a problem with pictures taken on the phone. When I've tried to MMS an image copied from Safari, it sends no problem so I can only think it's something to do with the MB size of the image taken by the iPhone but I was led to believe that the iOS 4 update allowed MMS messages of up to 2mb to be sent.

Another thought is, should I have a good 3G connection in order to send a largish MMS? Where I live, there is no 3G reception.

Jon.

There does appear to be a problem with the latest O2 carrier settings
O2 recommend until sorted
Settings>General>Network>Mobile Data Network>MMS
reset ......MMS max Message size to 307200

This has worked for most people reporting issue on the O2 User Forum

although as usual initial issues raised had the Usual O2 response ....Oh its Apples problem
they have now it appears worked out it is their carrier settings causing a timeout on sending
a MMS up to the size allowed by the original setting

Great! That worked for me!

Doesn't work for me unfortunately, when I hit reset the Max Message size stays at 2097152. However, my theory of it needing a 3G connection seems to hold water. I tried to send a photo from my phone this morning and had a good 3G connection from work and it sent without a hitch but I have to disconnect any wifi connection for this to work.

You are not saving it
Look here the issue is the size set by O2 carrier settings .
http://forum.o2.co.uk/viewtopic.php?f=3&t=56353

Once you actually change size it should work

I had that issue but it seems to have gone now, mms also had been disabled at O2's end after the update somehow. Anyway its working now, maybe O2 got things sorted.

Many thanks!! Worked for me. Phil

Cheers

I recently purchased a i phone 4 out off the 02 shop and i had problems sending message at 1st and then i just kept mucking about with it then when there was a 3g signal on my fone the mms messages were sending ok, but i've not known u must have a 3g signal before u can send a message to a network?

so you must have a 3g signal in the area ur in to send a mms!

MMMS does not rely on a 3G signal. Lots of phones that don't have 3G can send MMS's. It does need GPRS