I wish there would be greater disclosure about this and many other things. It can take up to 3 months for the US, but some other countries such as Latin America and Asian countries not called China and Japan it can take up to 6 months. In the EU, some people don't have to pay their bill monthly, there are quarterly and bi-annual billing cycles. It's a shame, because if there was full disclosure many people would have donated via another method. Hopefully all this exposure will get them to declare this a "crisis" and get the funds moving immediately.
P.S. Please be careful when giving your child a cell phone, it's as easy to buy virtual goods with it as a credit card and companies like mine have no way of knowing that you have given it to your child. If you would like to block these types of purchases, contact your local wireless company and have them remove "Premium SMS" from your child's phone. I wish all wireless carriers were forced to disclose this whenever anyone purchases a "Family Plan".
