well, if you delete your app, the data it had will also be deleted. if you just update the version, it shouldn't be the problem.

to be sure you won't lose it, you can save your character and profile files on phone. to do that, you need to press the arrow up button next to each save slot you need and choose the folder, then press save

to export profile (your gallery and achievements), you need to press the Export profile button on the upper right corner of Load screen

then you can import saves and profile back anytime

If somehow you brought the files from your PC to phone, you could import them the same way.