This paper looks at how people choose mobile phones by using info from trusted sources like academic articles and industry reports. So as to piece together what we already know about how price shapes choices, along with things like device specs, peer pressure, company reputation, or why someone wants to buy one. It takes a close look at earlier work done around the world, comparing stats such as correlations, regression numbers, and model outputs found in those papers. Turns out, shopping habits for phones depend a lot on where you are. Though cost and specs shape buying choices in certain areas, peer pressure or brand vibe matter more elsewhere. On top of that, research shows it's how good people think a phone is - not chasing prestige - that links closely to debt from buying one. What makes this work stand out is how it clears up past contradictions using side-by-side comparison, while shining light on money risks when shoppers focus on quality. These outcomes give real-world clues for ad teams and rule makers trying to match prices, images, and gadgets with what buyers actually do.