In theory, you can use any song as a ringtone, as long as you have the necessary rights to do so. However, it is important to respect copyright laws and check whether you have the right to use the music in this way.

Yes, most phones allow you to set different ringtones for different contacts. You can personalize your ringtones based on who calls you, making your experience even more unique.

Customizing MP3 ringtones generally works with most modern smartphones, whether they use Android or iOS. However, the specific steps may vary depending on the make and model of your phone.

Yes, you can always revert to a default ringtone at any time by changing your phone's ringtone settings. The customization is not permanent, so you have the flexibility to change your mind.