u/Few-Bid-8472

I plan to buy oneplus or realme buds..I found prices for both are the same in Amazon, flipkart and their respective store.. Buying from their store app makes anything different or amazon, flipkart itself good?

What is the difference between these two? Is it worth to spend 800 more for air 8 ? Or even though a old model Shall I go with op nord buds 3 pro?somebody please help me

Is oneplus and realme tws products compatible with Samsung mobiles?