Celcom website or click here for easy and you will see a webpage as the image above. What are you gonna do is, first select your region. Can see image below...
- First on your mobile phone type *118#
- And pick Service
- There you can see two thing 1. Celcom customer service and 2. FOC upgrade to 3G
- Pick 1. Celcom customer service
- Pick 2. Branch directory
- And follow the subsequent instructions until you can find the address near you.