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  1. Thread Author  Thread Author    #1  

    Default How can I use my Galaxy S3 (SCH-1535) on a different carrier?

    Okay, in 2012 I purchased a Samsung Galaxy S3 from Best Buy. This stock SCH-1535 was initially a verizon phone when I had a contract which I no longer have...I now want to switch to a less costly carrier, such as Straight Talk, now that my contract has (finally) ended. It has a clean esn since there is no money owed to Verizon but I don't understand why I can't switch the CDMA to a GSM network since my S3 has a sim card slot. I have recently acquired a month of Straight Talk service to use on the AT&T 4G LTE network (which I have confirmed that I have excellent coverage in my area) and I have managed to upgrade my S3 to android 4.3 and changed my access point names around but it still won't allow my mms or internet to work properly. I occasionally get excited just to catch a glimpse of Edge 2G network on my phone as this is a rare commodity with my current network situation. I have even gone to the extent of doing all of the additional leg-work and even went to Verizon Wireless, AT&T, Cellular Renewal, and Best Buy - Evidently Nobody at any of these retail wireless stores are willing to help me at all...I have searched and searched on hundreds of forums over the last two months to pinpoint a similar situation that I can try to remedy myself but unfortunately I have yet to find my solution. Therefore, I have resorted to joining my very first forum (androidcentral) to see if I can finally come to an end of fighting this losing battle of the cdma vs. gsm configurations as I still don't fully understand how they work. I honestly don't know what else I can do to get my phone to work and I'm afraid that I may turn it into a mobile brick if I attempt to root it or flash it. Can anybody help me please?
  2. #2  

    Default Re: How can I use my Galaxy S3 (SCH-1535) on a different carrier?

    Its simple, the Verizon Galaxy S3 model is a CDMA based device. Sure it has a SIM card slot but that doesn't automatically qualify it to be ran on a GSM based network like AT&T or T-Mobile, etc.

    The radio is not changeable from CDMA to GSM. I know some of the newer Galaxy S devices now have the option by Verizon or Sprint (both CDMA carriers) to use certain GSM frequencies when traveling over seas but to my knowledge even then your only going to see 2g or 3g at best, no HSPA+ or LTE.
    Last edited by Paul627g; 02-12-2014 at 04:41 PM. Reason: typo error
    Paul
    Moderator Team Leader @ Android Central





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  3. #3  

    Default Re: How can I use my Galaxy S3 (SCH-1535) on a different carrier?

    You might find this useful Verizon S3 to Straight Talk

    Sent from my rooted, debloated, deodexed Sinclair ZX-80 running CM -0.001 using Tapatalk Pro
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