I am writing my review on nokia lumia 630. Intially it was working good. But after that it got heated upon use for half an hour. the videos are not clearly visible. also the photos are not clearly visible. All the apps are not compatible with this phone. Always asks for update. It is also not user friendly. It will take at least two months to get familiarize with the device and operating system. More ever do not go for this phone.Maximum time gets hanged. Looks also not so good. of course it has some advantage that apps work some what faster. Whats app not working properly which is most essential for a person now a days. One advantage is there that network is good. Also the service center is also not so good. they will repair it but after some days again same problem. for update of os you have to go the service center and they will charge for it. better go for an android based phone. RAM is 512 mb . so not wok fast. While talking it gets so much heated that you will feel it is going to burst.