There are two ways that I know of to do this. I had the same problem, I live in the UK and am in Kuala Lumpur for an extended period. The easiest way is to use a VPN, I used Strong VPN but there are several free ones around also. If you have a Jailbroken phone there is an app that works great, Location Spoofer. It has a free tryout period and works great, it's what I use.