Rebtel, a competitor to Skype, released a new app, called SENDLY, back in December 2013. I believe it is probably the cheapest way to top-up your Philippine mobile phone. You can now top up your Philippine mobile at international exchange rates! Currently, a 500 Peso top-up costs just £6.75p which beats Forex exchange rate by 4p! Additionally, you will get 10% off this on your first order. In comparison, World Remit currently charges £9.71 for a 500 Peso Top-Up. Sendly has both Apple and Android apps and you just have to select a number from your smartphone's contact list in order to make a top-up; alternatively, you can send from Sendly's website, www.sendly.com. For more info... http://www.sendly.com/ https://play.google.com/store/apps/details?id=com.rebtel.sendly https://itunes.apple.com/app/id733851422