When a iphone updates after its done will it ask for a code to get into the phone?

My grand daughter iphone did a update earlier she said but when i tried to get into it it ask me for a code i didn't know the code so i ask her why do you need a code to get in your phone she said it done that after it updated but being a grandmother id believe her am I wrong or did she have to fix it for having to code

Added (1). Is there anyway I can listen to her voicemail from another phone

She has set it up with a passcode.

  • Why didn't I get the iphone updates? How do I get them? I have an iPhone 4 for Virgin Mobile, and I never got IOS 8, and a lot of my other friends got it. And then Apple put out another update called 8.0.2 to fix the bugs from 8.0, and I didn't get them one either. I went into my 'general', then my 'software update' and it still says '1.7.2, your software is up to date'. So why did I not get either update, and how could I get the new update?
  • My ask.fm won't let me ask anonymous? I have an iPhone 4, and I didn't update to iOS7. When the ask.fm app had an update recently, it didn't allow people to ask anonymous. So people could delete it then just not update it when they redownloaded it. Well I have deleted it like 3 times and I haven't updated it either. Why can't I ask anonymous questions still? And how can I?
  • Master reset my iPhone 4 last night and its still not done? I erased all my data and settings last night because I'm selling it today. When I reset it, it went to the apple logo and then to the spinner that comes up when it dies. I can't hard reset it because the lock button is stuck.iTunes nor my MacBook will recognize it so I can't try to fix it through iTunes. I tried connecting it to my wall charger as well, nothing. Still spinning 8 hours later… And I've read it's supposed to only take 15 mins at most.
  • Is tbere any major différence between thé iPhone 6 and the 6s? Whooppeee is Xmas again and my daughter wants new 2nd hand) iPhone… 2 years ago almost bought her 5 before i réaliséd that it was 5s she wanted ( cos thé 5 sucks?) And I don't want to screw up this year…