Swapping phones

[regression]

I currently have Sprint -[) and am thinking of switching over to AT&T. If I purchase a phone, like a Galaxy S4 or Moto X and later on decide I want a Nexus 4 (or 5), will I be able to simply buy the Nexus from Google Plan and pop my SIM card from my existing phone into the Nexus? Does AT&T care about the phone I am using? I have never had a GSM carrier so SIM's, unlocking the phone (which I think is different than unlocking the boot loader for rooting), etc are new to me.

 

[iHackPro]

Yes, unlocking the phone is different than unlocking the bootloader, and yes you'll be able top pop in your SIM in a Nexus/any GSM phone. You might have to change your APN for HSPA+ speeds though. You can look here/XDA for that.

 

[srkmagnus]

Yup, you'll be able to use a phone on AT&T by swapping out the SIM/unlocking the device. Many people are doing just that with the current Nexus 4.

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