Can't send pics on my iPhone?

My iPhone is pretty old but it had no problems sending/receiving pictures before. When I try sending a pic it doesn't load all the way and ends up being a message failure.

Make sure your data is on

Well, go to setting>general>network>turn cellular data on. Cellular data isn't needed to make calls or to send sms text. But it is needed to send mms messages.

hope it helps

Make sure your connections are pretty good and have your data on.

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