In Reply to: Sim cards posted by beachsoul on Friday, 9. August 2013 at 10:16 Bali Time:
Lots of previous posts. Simpatti is one of the companies. Lots of places which will install and put credit on for you.
I answer this question regularly, and it is answered by many others.
Have a look in the search area above and use "wss sim phone" you will find many previous replies from me and others. Have a look at the header with balitravelforum like this www.balitravelforum.com/archives/201304/91600.html
or you could cut and paste this into google