How do I switch my service to a new iPhone?

How do I switch my service to a new iPhone?

New sal\ mer

If the phone is unlocked or is on the same carrier as your SIM, you stick your SIM card into it.

  • Would I be able to switch carriers without having to switch phones? I'm with Consumer Cellular and I have an iPhone SE, but I'm thinking of switching carriers so that I can get unlimited data. I don't want to get a new phone because I've had my current one about six months, I really like it, and it works great. I'm not locked into a contract with Consumer Cellular. Would I be able to switch to another carrier without having to purchase a new phone?
  • Same network, Iphone 5 only receiving Edge service, Iphone 4 receiveing 3g service? Running IOS 6.1.2 on Iphone 5, 6.1 on Iphone 4 Both on O2 Can't get 3g service on iphone 5. Iphone 4 can and they are both in the same room, any ideas why?
  • New iPhone won't get service but my older iPhone gets service? I just got a 6s and went to the Verizon store to get my upgrade. I used to have a 5s. My 5s is still getting service and my 6s is not. I turned off cellular data on my 5s and and made sure both data and LTE were working on my 6s but it still isn't working.
  • IPhone 4 gets Service then No Service? Ok so I have an iPhone 4 factory unlocked then when i put my prepaid T-Mobile sim card in, it doesn't work. Sometimes it works then sometimes it just does not work at all, what is wrong with my iPhone, thank you.