Nostalgic classic pop ringtones can evoke fond memories and add a touch of retro charm to your smartphone. Here are some timeless classic pop songs that have been used as ringtones and are sure to bring back nostalgic feelings:

1. "Yesterday" by The Beatles: This iconic ballad by The Beatles is a timeless classic that has been cherished for decades. Its mellow melody makes it an ideal choice for a nostalgic ringtone.

2. "My Girl" by The Temptations: A soulful and heartwarming song by The Temptations, "My Girl" has a feel-good vibe that's perfect for a classic pop ringtone.

3. "I Want to Hold Your Hand" by The Beatles: Another Beatles hit that became an anthem of the British Invasion, this joyful song can brighten up your day whenever your phone rings.

4. "Stand By Me" by Ben E. King: This soulful and enduring song carries a timeless message of support and loyalty, making it a meaningful ringtone choice.

5. "Can't Help Falling in Love" by Elvis Presley: Known as one of Elvis Presley's signature songs, this romantic ballad is a perfect choice for a classic pop ringtone with a touch of nostalgia.

6. "What a Wonderful World" by Louis Armstrong: This uplifting and heartwarming song by Louis Armstrong is a reminder of the beauty in the world and a popular choice for nostalgic ringtones.

7. "Unchained Melody" by The Righteous Brothers: With its soaring vocals and emotional depth, "Unchained Melody" has remained a classic favorite over the years and makes for an evocative ringtone.

8. "Sweet Caroline" by Neil Diamond: A feel-good anthem that gets everyone singing along, "Sweet Caroline" can bring a sense of joy and nostalgia to your ringtone.