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I have a QR Reader on my old Sasmung cell (no longer have service for it). Works great. I wanted to install that exact one on my new Samsung but when I Google PLay a search I never found that exact one. I visited the old cell and enabled the Developer option but that didn't tell me the creator of that QR Reader. It did tell me version 1.6.2 so I Google Play searched QR Reader 1.6.2 but that didn't help. How can I ascertain the creator of an app on a non-service older cell? I like that it had no ads. Thank you.