I used a couple of devices but not really as personal devices : N770 (not phone) Greenphone Freerunner but i started to become addicted with : n810 (not a phone) N950 (best ever) N9 J1 + others dusting in my : e7, bb10 dac, Nokia x, tizen z1, galaxy note and maybe a couple of others.. yes n900 is missing i would buy one if i can find a cheap unit.