Grateful for some advice please; we recently purchased an M7450 and it works great when we visit out little casa in Spain. However, we can only see the data used on the screen for the pre-loaded sim card and not how much is left - easy at the moment as it is a 15 Gb card with 10 Gb used but what happens after multiple top ups. 

Is there any way I can see how much data is left on a preloaded card?

Thanking anyone in advance if the can help. A donation to the charity of your choice or by default to a doggie charity :)

Glenn