Blackberry q 10 is more expensive than q20 because of its high cost performance. Blackberry chip platforms q 10 and q20 are Qualcomm s4, and their performance levels are similar. The battery of Q20 is more durable, but it is not detachable, while the battery of q 10 is detachable. Q20 uses LCD screen, and q 10 is OLED screen (q 10 screen is more harmful to eyes). P 10 has a good overall configuration and high cost performance.