@bitcats, can you confirm that disabling Continuous Autofocus helps for your device? In that case, please let me know what your model is.
I disabled "Continuous Autofocus" on my Galaxy 4 (CyanogenMod), I tried "Auto" and "Macro" mode - didn't work! There's a popup message, but it autocloses within a second, impossible to read it.I'd appreciate an option to import a QR code pic into Mycelium:
So for payments I think it is a lot easier to use an external scanner and hit the clipboard button in the above screenshot.
Actually, if the thing you scan follows the bitcoin URI standard it will actually launch the wallet automatically.
Try and scan this one with an external scanner on your phone:
bitcoin:1Fuz2SyLVegGhXquoigrQeczrbQjDuNzEU
(I wouldn't advise to use an external scanner for scanning private keys unless you really trust the other apps on your device)