Do you need a printed confirmation of payment for PCR tests when passing the second test or is it enough to show a screenshot on your phone?

[IrinaL]

Do you need a printed confirmation of payment for PCR tests when passing the second test or is it enough to show a screenshot on your phone?

[Serjio]

With the phone enough. and don't forget your passport)

[Nikita]

Ask for a check, photocopier passport.