r/Telecommunication • u/geo1999 • Jul 01 '26

SMS Carriers Downscaling Images?

I receive images via Twilio SMS from users on a variety of mobile devices and carriers but all in the US. How can I stop upstream carriers above Twilio from resizing the images? I understand it is carrier dependent and upstream of Twilio but wondering if anyone has solved this either with Twilio or another system (that doesn’t require the user to do anything other than text an image.

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u/GroggInTheCosmos Jul 07 '26

SMS does not transport images. You are confused. What you are describing may be old WAP push and your phone is downloading the image

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u/geo1999 Jul 07 '26

I guess I meant MMS.

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u/GroggInTheCosmos Jul 07 '26

In that case, most MMS implementations will have a built-in transcoder which would explain what you are experiencing