Has your SCH-I545 become a "smart paperweight?"
Without voice calling, those of us who really love our SCH-I545s may want to find some new, limited role for the trusty old S4, even if it just sits at home.. HOWEVER, I'm here to tell you that it's possible to get a TracFone/AT&T SIM card for $1, set up a new APN, and even though the data may not be quite as fast as 4G/LTE on Verizon, you can still make voice calls, use cell data, SMS and MMS!
My S4 happens to be rooted, and I have hidden menus enabled, etc., as described in an XDA thread titled "How To Make Verizon SCH-I545 Fully Work On AT&T" (search that, I think you can find it....) But even if your S4 isn't rooted and you don't want the pain of trying, you may be able to get it working anyway, without root and the changes described in the XDA thread. There are surely others out there who could benefit from knowing your results from that experiment.
Here's how I got things working: Bought the $1 TracFone SIM kit, went to their website and activated the SIM (I was already a Tracfone/Verizon customer, so activating the AT&T SIM deactivated my VZW one, and my minutes and data transferred automatically to the new SIM. (The texts *didn't*, but that was resolved, after a few calls... by their customer service, and hopefully that detail won't be a snag for you.) Went to Settings>More Networks>Mobile Networks>Access Point Names, and (with the non-Verizon SIM activated and in the phone) added a new APN by clicking "+". If you don't have the AT&T SIM in there, your "+" will be greyed-out and unselectable. I used settings for the new APN that are in one of the responses to the above XDA forum thread (see page 2):
NAME: TRACFONE
APN: RESELLER
AUTH_TYPE: None
MMSC: http://mmsc.mobile.att.net
MMS PROXY: proxy.mobile.att.net
MMS PORT: 80
MMS_APN_TYPE: default,mms,supl
MVNO TYPE: GID
MVNO VALUE: deff
The only snag I've had is that MMS sometimes fails, (if the attachment is too big? Maybe the phone still uses Verizon-spec compression on photos, and the results may not fit AT&T limitations? ) But most often, all phone functions are working well.
Rebooting may be needed after the new APN is selected....
Hope my results can be duplicated. Good luck!
[OP edited to be nicer to Verizon since they are probably a forum sponsor. Thread title uneditable. There are dozens of eBay vendors selling thousands of new and used parts for this phone. Have a look. There are also Youtube videos showing how to install the parts, for those who can handle it.]
Without voice calling, those of us who really love our SCH-I545s may want to find some new, limited role for the trusty old S4, even if it just sits at home.. HOWEVER, I'm here to tell you that it's possible to get a TracFone/AT&T SIM card for $1, set up a new APN, and even though the data may not be quite as fast as 4G/LTE on Verizon, you can still make voice calls, use cell data, SMS and MMS!
My S4 happens to be rooted, and I have hidden menus enabled, etc., as described in an XDA thread titled "How To Make Verizon SCH-I545 Fully Work On AT&T" (search that, I think you can find it....) But even if your S4 isn't rooted and you don't want the pain of trying, you may be able to get it working anyway, without root and the changes described in the XDA thread. There are surely others out there who could benefit from knowing your results from that experiment.
Here's how I got things working: Bought the $1 TracFone SIM kit, went to their website and activated the SIM (I was already a Tracfone/Verizon customer, so activating the AT&T SIM deactivated my VZW one, and my minutes and data transferred automatically to the new SIM. (The texts *didn't*, but that was resolved, after a few calls... by their customer service, and hopefully that detail won't be a snag for you.) Went to Settings>More Networks>Mobile Networks>Access Point Names, and (with the non-Verizon SIM activated and in the phone) added a new APN by clicking "+". If you don't have the AT&T SIM in there, your "+" will be greyed-out and unselectable. I used settings for the new APN that are in one of the responses to the above XDA forum thread (see page 2):
NAME: TRACFONE
APN: RESELLER
AUTH_TYPE: None
MMSC: http://mmsc.mobile.att.net
MMS PROXY: proxy.mobile.att.net
MMS PORT: 80
MMS_APN_TYPE: default,mms,supl
MVNO TYPE: GID
MVNO VALUE: deff
The only snag I've had is that MMS sometimes fails, (if the attachment is too big? Maybe the phone still uses Verizon-spec compression on photos, and the results may not fit AT&T limitations? ) But most often, all phone functions are working well.
Rebooting may be needed after the new APN is selected....
Hope my results can be duplicated. Good luck!
[OP edited to be nicer to Verizon since they are probably a forum sponsor. Thread title uneditable. There are dozens of eBay vendors selling thousands of new and used parts for this phone. Have a look. There are also Youtube videos showing how to install the parts, for those who can handle it.]
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