IPS Vs AMOLED Vs RETINA Screen Technologies Detailed Explained in Hindi / Urdu

Asslam O Alikum Dosto,yeh 1 Informative or intresting video hy,main ny is video mein aap ko IPS Display, AMOLED Display or Retina Display k baare mein bataya ha, k in sab Display Technology mein kya difference ha, or har 1 k kya kya fayde or nuksaan hain.umeed hy video aap ko pasand aiy ge,Video ko Like or Share krna mat bhholiya ga,Aap ka din accha guzry.Allah Hafiz..........
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What is PPI? What does it mean?| How to Measure Pixels Per Inch? Explained
Link : http://www.dailymotion.com/video/x4nspho_what-is-ppi-what-does-it-mean-how-to-measure-pixels-per-inch-explained_tech