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A quick guide to enabling and fixing MMS on your iPhone when it isn't working
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When you have MMS enabled, you can send multimedia messages, such as photos, videos, and group messages to people who don't have iPhones, or who aren't using iMessage. MMS, which stands for Multimedia Messaging Service, is usually enabled on your iPhone by default—however, you can only use MMS when you're connected to your mobile phone service's network. This wikiHow teaches you how to enable multimedia messaging (MMS) on your iPhone running iOS 15, 16, or newer.

How to Enable MMS on iPhone

  • Open the Control Center and turn on "Cellular Data" if it isn't already.
  • Open "Settings" → "Messages" → toggle on "MMS Messaging" and "Group Messaging".
  • If MMS isn't working, update your iPhone, reset your Network Settings, or contact your carrier.
Section 1 of 2:

Enabling MMS

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  1. Turn on cellular data . If you want to send a multimedia message like a photo, video, or group message when you're not connected to Wi-Fi, or if you're want to send it to someone who isn't using iMessage (such as an Android user), you'll need to use MMS. [1] MMS requires using your mobile carrier, even if you're connected to the internet via Wi-Fi. To turn on cellular data:
    • Open the Control Center by swiping down from the upper-right corner of the home screen on iPhone X or later, or by swiping up from the bottom of the home screen on other models.
    • If the cellular icon (the vertical antenna with two curved lines on either side in the upper-right tile) is gray, tap it to turn it green. If not, you're already on the network.
    • Some cellular plans don't come with MMS messaging, while others may charge if you go over a certain amount. Make sure you check with your carrier to find out the specific limitations before sending an MMS message.
  2. It's the gray gear icon on the home screen or in your App Library.
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  3. You can find this between Phone and FaceTime .
  4. This will be underneath the SMS/MMS header. This allows your phone to send messages with pictures and videos using your data plan with your carrier.
    • MMS is different from iMessage , which can be sent using a Wi-Fi signal when senders and recipients have iMessage enabled. It doesn’t use cellular data when Wi-Fi is available.
    • Any time you send a photo or other type of multimedia message to someone with an Android, it will always be sent as MMS. If you don't enable MMS, you won't be able to send multimedia messages to anyone with an Android or with an iPhone who isn't using iMessage.
  5. This allows you to send and reply to group messages, which may require MMS if other group members aren't using iMessage.
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Section 2 of 2:

Troubleshooting

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  1. An SMS message is a regular text message sent through your cellular network. If you can send an SMS but not an MMS, it might be because the attachment is too large—carriers do limit MMS size. For example, if you (or the person you're sending the message to) is using Verizon, the message must be smaller than 3.5 MB. [2] You'll need to turn off iMessage to send an SMS, so follow these steps:
    • Open the Settings app.
    • Scroll down and tap Messages .
    • Toggle off iMessage .
    • Open the Messages app and attempt to send a text-only message to one recipient with no attachments.
      • If the text-only message went through, try sending it again with the attachment. If it still doesn't go through, it's probably because the attachment is too big, or because your carrier limits MMS.
      • If both SMS and MMS messages go through when iMessage is disabled, it's likely because the recipient is using an Android, but their phone number was once connected to an iPhone. Your iPhone may be attempting to attempt to send messages to their iMessage account rather than their phone number with MMS. If this is the case, have the recipient contact Apple for instructions for unlinking their phone number from the previously-associated iMessage account.
    • After testing, toggle iMessage back on.
  2. Update your iPhone. You may run into issues when your phone hasn't been updated in a while. To update your iOS, open the Settings app. Click General, and then click Software Update.
  3. This will clear all of your cellular and Wi-Fi connections, potentially fixing any errors in your MMS service. Just be aware that this will clear all of your saved Wi-Fi network passwords, so you'll have to enter them again when you connect to Wi-Fi.
    • Open Settings.
    • Tap General.
    • Tap Transfer or Reset iPhone.
    • Tap Reset.
    • Tap Reset Network Settings. If you have a passcode, you will be asked to enter it.
  4. MMS is a carrier feature, which means that your carrier manages the servers that send MMS data from your iPhone to other phones and vice versa. If you're having persistent MMS problems, your carrier may be able to reset your MMS service on their end, fixing the connection issue.
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Community Q&A

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  • Question
    The MMS tab and group settings tab are not on the message settings, where can I find them elsewhere?
    Community Answer
    If you don't see the MMS and group switches when you go to Settings>>Messages and scroll down, then your plan may not support MMS or you may need to set it up. Contact your carrier for more information.
  • Question
    How do you activate SMS on a Samsung Galaxy S6?
    Community Answer
    On your Android device, open the Hangouts app. At the top left, tap "Menu." Tap "Settings." Tap "SMS." Tap "SMS disabled" to switch the setting to SMS enabled.
  • Question
    How do I delete messages?
    Community Answer
    Tap and hold the message, tap "More," and tap the trashcan icon. Tap Delete Message to confirm.
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      Tips

      • SMS only needs cell signal to send/receive, but MMS requires cell data (e.g. 3G, 4G) on iPhones.
      • You can identify which protocol your iMessage is using by the color of the message. Blue means iMessage is being used, while green means the message is using SMS/MMS. Green messages with multimedia require cell data to be sent or received.
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      About This Article

      Article Summary X

      1. Open Settings .
      2. Tap Cellular .
      3. Slide Cellular Data to the "On" position (if it isn't already).
      4. Tap Settings in the upper-left corner to go back to the previous menu.
      5. Tap Messages .
      3. Slide Send as SMS to the "On" position.
      4. Slide MMS Messaging to the "On" position.
      5. Slide Group Messaging to the "On" position.

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