If he downloaded it from the Play Store it would check compatibility and prevent him from downloading an incompatible version or app.Does the Store say it's compatible with his phone. He would need to look in a browser.
Totally correct, but there seems to be some question about if it even got installed. Problems downloading in the OP, (not installing according to the quote), then sent by mail with no indication what the results were. But I'm not familiar with a Galaxy Trend either.If he downloaded it from the Play Store it would check compatibility and prevent him from downloading an incompatible version or app.