Send Mobile Top-Ups Exciting News: Send Mobile Top-Ups within the MoneyGram® App! We’ve partnered with Ding, the largest international mobile top-up platform, to give you the ability to send mobile top-ups from the MoneyGram® app! Send Mobile Top-Ups within the MoneyGram® App! We’ve partnered with Ding, the largest international mobile top-up platform, to give you the ability to send mobile ... the MoneyGram® Money Transfers App that makes it easier than ever to keep in touch with friends and family around the world. We’ve partnered with Ding , the largest international mobile top-up platform