you can't upscale anything. even cropping it at 300dpi will increase it, we don't use 300dpi here. if you have other work, that has that same appearance this image has, then it probably won't print. i don't really have time to look at them all. basically if the image doesn't look nice at a 100%, you probably don't want to show those. it's never great working on a phone because it usually doesn't show you up close. always zoom in at 100-200% to inspect it first.
---Mike Savad
MikeSavad.com