I tried to check for updates on the Lumia 630 and it shows 'Checking for updates'.It takes forever and doesnt show anything,just the same 'Checking for updates' text on the screen.I tried the same with my Lumia 730 and it seems to be working fine.
Lumia 630
Windows Phone 8.1 - Cyan
OS Version : 8.10.12359.845
Latest update should be Lumia Denim
OS Version : 8.10.14234.375
Lumia 630
Windows Phone 8.1 - Cyan
OS Version : 8.10.12359.845
Latest update should be Lumia Denim
OS Version : 8.10.14234.375