Yes just let them scan your phone
Yes, just handover ur cellphone and they will lookup the code.
The phone was fine for me i printed the receipt as well but was never asked for it.
They asked me for a printout. It was awkward but they ended up accepting the cell phone screen. Resolve this on your way in so you don't have to go through what I went through.
Yes. You don't need to print it out.
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