Hello friends i am abhishek shandilya and i am agree with etuoyo. there are such problems, and i also sent my mobile to nokia care for solving this type of problems 1) my memory card is not working. 2) when i am using internet through sim after some time it shows a message insert sim 3) Slider is not good. 4) Sometime screen goes white. 5) sometime screen not respond for long time. 6) map have not fully navigation system. i use average 70% mobiles of nokia and happy with them after using nokia n900 i am not satisfied due to this problems. i purchase my nokia n900 in 25,000 i think i just waste my 25,000 rupess. sorry nokia i am disappointed with you. if u think that i am wrong send me mail on abhi9999668407@gmail.com