Clash of Clans is probably one of the most competitive and popular mobile games in the world today. Supercell, the developer of Clash of Clans, reportedly earned around $1.7B in 2014 due to in-app purchases and advertisements (it definitely defeated Kim Kardashian's mobile game).
The game is very addicting! I tried it last year but stopped. But I re-built my village and continued just a month ago just in time for Smart's Philippine Clash Tournament. As observed - an average 'clasher' usually spend a Pile of Gems (or 500 gems) a week for upgrades and to speed up things. It's priced at $4.99.
I usually get my Clash of Clans gems from Google Play Store and I charge it to my personal Smart Postpaid number. It's very easy and worry-free. It's also helpful for people who doesn't have any credit card who wants their gems pronto. Here's how you do it:
