ASUS P505 PDA Phone, 2.8", 240 x 320 pixels, Silver ASUS P505 PDA Phone. Display diagonal: 2.8", Display resolution: 240 x 320 pixels. Product color: Silver. Weight: 5.82 oz (165 g) Asus P505Windows Smartphones have always been either A) a bit of a brick or B) just like a PDA, but we like something thats smart to look the part. Asus have given us a taste of the P505 an unashamedly Geeky phone.