Most carriers limit MMS attachments to around 1MB . If the file is too large, it may be automatically compressed, which can lower the audio quality. Setting the Received File as a Ringtone
Once the recipient receives the text, they must save the file to their device before setting it as a tone. On iPhone (iOS 26) Send Ringtone To Phone By Text Message
Long-press the audio attachment in your text message and select Save or Download . Most carriers limit MMS attachments to around 1MB
Find the audio file (usually in MP3 or M4A format) in your phone's Files or Music app. On iPhone (iOS 26) Long-press the audio attachment
While newer iOS versions have simplified the process, GarageBand remains a powerful free tool for converting any song into a ringtone on older iPhone models.
New features in iOS 26 allow you to tap Share on an audio file and select a new Use as Ringtone option directly, bypassing the need for third-party apps like GarageBand. On Android