Ciao Nasti, Benvenuto nella nostra Community!
Hai seguito le istruzioni del manuale per provare ad estrarre il supporto Sim?
Se non si apre nonostante tu segua le istruzioni è probabile che ci sia qualche problematica al carrellino della Sim del dispositivo che hai ricevuto e ti consiglio quindi di richiederne la sostituzione al rivenditore se ne hai la possibilità. 
In alternativa potrai far verificare il tuo A5 presso un nostro centro autorizzato.
Fammi sapere se ti serve altro aiuto!
Ciao
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