The search results did not provide specific information about "meli 3gp dulu." This phrase appears to be in Indonesian and might refer to:

Introduction

The terms used in this phrase provide insight into its likely meaning: 

Compatibility: It was the universal language of mobile phones. Whether you had a high-end "Symbian" smartphone or a basic feature phone, it could likely play a 3GP file.

The mystery of viral videos was fueled by word-of-mouth rather than algorithms. A Legacy of Mobile History

Long write-up: "meli 3gp dulu free verified"

Context and likely meaning

The phrase "meli 3gp dulu free verified" appears to be a mix of informal Indonesian/Malay and internet shorthand. Interpreting word-by-word:

Sebelum kalian klik sembarangan, saya kasih peringatan penting: