SM-S926U - is the Sim what let's it go from CDMA to GSM?

[boe]

Hello,

I'm looking at getting a new phone to replace my S10. I'm on Verizon. I'd like to be able to travel overseas with it but don't know what locked vs. unlocked means. Some say they only work with Verizon, some say unlocked. I'm not sure if it is just a sim that determines it or if there are different models with the same SM-S926U name.

 

[mustang7757]

Yes the sim will dictate that and what carrier boat and splash screen gets out on .

SM-S926U is the carrier version once it's been fulfilled by carrier it will be unlocked to work on any network.

SM-S926U1 is the unlock firmware which means no carrier bloat ware or splash screen and already unlocked .

You can go between either firmware if you choose to with Odin and simple process as they are all interchangeable.

 

[Village_Idiot]

Hello,

I'm looking at getting a new phone to replace my S10. I'm on Verizon. I'd like to be able to travel overseas with it but don't know what locked vs. unlocked means. Some say they only work with Verizon, some say unlocked. I'm not sure if it is just a sim that determines it or if there are different models with the same SM-S926U name.

Verizon decommissioned its CDMA network years ago. Your S10 SIM will work just fine in an S22.

 

[boe]

Thanks - I had no idea the CMDA network was gone - so do they use the same network as ATT & TMobile?

 

[Village_Idiot]

Thanks - I had no idea the CMDA network was gone - so do they use the same network as ATT & TMobile?

Yeah. Also, the SIM has nothing to do with CDMA. CDMA phones never used them. However, GSM devices do require them. Since 4G and 5G are direct descendants of GSM they do require a SIM (either an eSIM or physical SIM).

 

[boe]

Thanks!

 

[Village_Idiot]

The ability of the SM-S926U (Samsung Galaxy S21+) to switch between CDMA and GSM networks depends on whether the phone is unlocked or locked. An unlocked phone can work with multiple carriers, including those overseas, by changing the SIM card. A locked phone is restricted to a specific carrier, like Verizon. While different models may exist, the key factor is whether the phone is carrier-locked or unlocked. To use the phone internationally, ensure it is unlocked and supports the necessary frequency bands for the regions you will visit.

Kinda true. All Verizon branded phones are automatically unlocked after 60 days on Verizon's network. Furthermore, as I stated, Verizon has dismantled its CDMA network. Since Sprint was bought by T-Mobile, there are no more commercial CDMA networks in the US. Everything is 4G/5G.

AT&T and T-Mobile do it differently. If it is an AT&T or T-Mobile branded device, then either one will unlock it upon request (e.g. the device is not on consignment (i.e. paid off).

The OP will be able to use the SIM from his S10 in an S24 device.

 

[Village_Idiot]

Thanks!

I do advise you to use the SIM that comes with the new phone. and just shred the old one. Your phone number won't change and it won't cause any data loss (unless you have contacts saved on the old SIM).

Even though SIMs are solid state, they can wear out over time. Using the SIM that comes with the new phone will ensure it has optimal performance and less likely of failure.