Unable to send MMS messages on iPhone 12 pro

I am trying to send a photo via messages on my new iPhone 12 pro and even though MMS Messaging is enabled I receive an error message saying “MMS Messaging needs to be enabled to send this message”, any ideas on how to fix?

iPhone 12 Pro, iOS 14

Posted on Nov 14, 2020 10:48 PM

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Question marked as Top-ranking reply

Posted on Jan 15, 2021 5:50 PM

Anything having to do with MMS is still a carrier problem, not an iPhone problem. You must contact your carrier’s tech support and have them either fix it, or reprovision your account. You may need help from a tier 2 tech to do this.

61 replies

Jan 6, 2021 5:24 PM in response to Kylie_99

Kylie, I’m not sure if you ended up finding a remedy for problem yet, I found your post after experiencing the same issue...


MMS enabled, both in settings and via carrier. In Australia, our latest carrier format for mobile (cellular) data is 5G, which apparently optimises iPhone 12 and other new brands of smart phone using mobile data. But... possibly similarly in US, MMS and other forms of encrypted data can be blocked, both on wifi and mobile data.


This can be adjusted by changing SIM, either physical SIM or eSIM. Then I guarantee you will be able to send pictures, videos, group pictures, etc. Essentially you need to “dumb down” your iPhone 12’s abilities, using the predecessor of your current SIM. Your last phone did not have capabilities of this one, so it would not have blocked anything. This will not adversely affect your phone. Frankly, many of the so-called awesome features are a pain in the butt, Face ID sucks, I now only use PIN, and this new security feature is a massive irritation. So downgrade the SIM.


my last phone was iPhone X. No problems ever.... if it ain’t broke, why fix it?

Jan 15, 2021 5:48 PM in response to Lawrence Finch

iMessage failure to send the message

displaying”number is not registered in

iMessage despite previous messages

still in the log, this happened to my

old iPad mini. Weeks ago Apple had

me signed for iMessage ...that worked

for couple of days only.

this sending failure occurs when sending

to some people, not all,

whenever their name or phone number

entered the top of the screen turned

green, their name and number turned

to red, thanks for advice.


iphone 📱 12 is ok 👍 now.

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Unable to send MMS messages on iPhone 12 pro

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