Need help unlocking phone for SIM card

[amber qbrrt]

Hello, I have a Galaxy s6 on the straight talk network. The phone broke and they're taking forever to replace it. In the meantime I got a SIM card adapter for my old s4 that I had through TMobile. Just put the SIM card from the s6 into the s4 and it's asking for an unlock code. What do I do? Thank you in advance

 

[PapaGary]

Re: Need help unlocking SIM card

It's not the SIM that needs to be unlocked. It's the phone.

 

[amber qbrrt]

Re: Need help unlocking SIM card

Do you know how I can do that?

 

[B. Diddy]

Welcome to Android Central! See here: https://www.t-mobile.com/responsibility/consumer-info/policies/sim-unlock-policy

 

[Rukbat]

Straight Talk uses all 4 carriers (they're a virtual network, they don't have towers), but ...

The S4 doesn't have 4G radios, so you'll be stuck with 3G for data. (And, with all the changes over the past few years, an S4, logging into the carrier's network on 2G, may not be able to log into the network. [You're not losing anything, there's no charge to unlock a phone, just be prepared for it not working, or not working well].)

 

[B. Diddy]

I think most Galaxy S4's have a 4G LTE radio. There might be some international dual SIM versions that don't, though.