Which microSD cards work with the Microsoft Lumia 640?

[Windows Central]

Unless you actually know for sure, buying a microSD card to go with your new Windows Phone is potentially confusing. Thankfully, the Windows Central Forums helps break down the techy talk.
Manufacturers spec sheets often don't list the type of microSD card that you can use with your phone. And so the confusion arrives for some picking up a new phone, like the Lumia 640

Full story from the WindowsCentral blog...