Can i swap my iphone 4 sim with an iphone 4s?

I have an iphone 4 now with sim card and a plan for it. Now if i buy a new iphone 4s will all i have to do is put the iphone 4 sim card in the 4s and everything will be fine? Will i have to talk to my service provider?

You don't have to call anyone. Just put the old sim card into the new phone. Everything will work out.

It will work if the new phone is from the same provider or unlocked

  • Will tmobile swap my micro sim to the nano sim for iPhone 5? Basically I have an iPhone 4 under contract until October 2013, but if I buy an iPhone 5 on pay as you go, will t mobile swap my micro sim to a nano sim whilst I'm under contract?
  • Nokia Lumia 520 and iPhone 5s sim card swap? I have a Nokia Lumia 520 with a GoPhone plan. And I was wondering if I was to purchase an iPhone 5s, would I be able to just put the sim card in the iPhone and have everything work the way it did with the Nokia. Like the plan with texting and calling and the data.
  • Lost contacts during sim car swap? I've had an old Samsung with the standard sim card, I bought an iPhone 6 and a ordered a nano sim card. The switchover has happened and my old sim is not longer active, but I didn't backup my contacts. Have I lost them forever? I had over 600 contact numbers. I'm with Virgin.
  • Can you swap a sim from an iphone 4 to an android? So my boyfriend has had a iPhone 4s for little under 2 years and he's just got a HTC One i gave him, When we swapped his sim card from the iPhone to the HTC we got a signal and he can text and ring people but can't activate his 3G network, it keeps saying its disconnected… What is the problem? The thing is the iphone was vodafone mine was unlocked