Sprint M8 to Tmobile? - One (M8) Q&A, Help & Troubleshooting

Looking to leave this God awful Sprint service and join Tmobile. If I unlock the SIM card can it be used on Tmobile w/o issue or is that not possible?

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what straight talk sim should i get

what straight talk sim should i get ??? att compatible, t mobile compatible, or unlock phone compatible
Depending on which service is better in your area, most like AT&T is going to be the better choice since tmobile you would only get Edge (2G) data and the unlocked sim card choice all they do is send you an AT&T sim card.
thanks
You're welcome

[Q] TMO S3 on Straight Talk on AT&T, can I do this?

I would like to use my T-Mobile Galaxy S3 on Straight Talk on the AT&T network. I'm currently using Solavei running under T-Mobile's network, but T-Mobile isn't cutting it in my area. I really want to run on the AT&T network. Solavei only runs on TMO.
TMO is great when I can get 4G but it sucks when others in the same physical location can get AT&T to 4G and TMO is E or G network.
Examples of where AT&T is working great but TMO isn't are: up in the canyons (Millcreek, SLC, Utah), over the dunes at the beach (Topsail, NC), at my house (SLC, UT).
Questions:
1. Can I do this? Run a T-Mobile Galaxy S3 on Straight Talk on the AT&T network?
2. If so, If I buy a sim from Straight Talk what does it take to make sure it runs on the AT&T network and not on TMO? I'd really hate to go through all that and still end up on TMO and not AT&T. I've already had an AT&T sim running in my Galaxy S3 and everything was working great. I just didn't want to pay AT&T prices.
3. I've heard that Straight Talk will switch from TMO to AT&T depending on what area on the country you live in. Is this true? Is there anyway to override this?
4. I've heard that you can't buy AT&T sims anymore from Straight Talk. There seems to be a market now for AT&T sims that were available at the beginning of the year but are not now.
PS: I'm trying to do this for the TMO Note 2 also.
Yeah you can use tmobile's straight talk on at&t network. Just pop in sim and select roaming and available network select at&t. Should connect no problem
Sent from my SGH-T999 using Tapatalk 2
rwitmer said:
I would like to use my T-Mobile Galaxy S3 on Straight Talk on the AT&T network. I'm currently using Solavei running under T-Mobile's network, but T-Mobile isn't cutting it in my area. I really want to run on the AT&T network. Solavei only runs on TMO.
TMO is great when I can get 4G but it sucks when others in the same physical location can get AT&T to 4G and TMO is E or G network.
Examples of where AT&T is working great but TMO isn't are: up in the canyons (Millcreek, SLC, Utah), over the dunes at the beach (Topsail, NC), at my house (SLC, UT).
Questions:
1. Can I do this? Run a T-Mobile Galaxy S3 on Straight Talk on the AT&T network?
2. If so, If I buy a sim from Straight Talk what does it take to make sure it runs on the AT&T network and not on TMO? I'd really hate to go through all that and still end up on TMO and not AT&T. I've already had an AT&T sim running in my Galaxy S3 and everything was working great. I just didn't want to pay AT&T prices.
3. I've heard that Straight Talk will switch from TMO to AT&T depending on what area on the country you live in. Is this true? Is there anyway to override this?
4. I've heard that you can't buy AT&T sims anymore from Straight Talk. There seems to be a market now for AT&T sims that were available at the beginning of the year but are not now.
PS: I'm trying to do this for the TMO Note 2 also.
Click to expand...
Click to collapse
You have to SIM unlock your phone first as it won't take an at&t SIM out of the gate - either call T-Mobile for the code or you can follow this method - http://forum.xda-developers.com/showthread.php?t=2023709
Note that if you are the latest radio (MD5), you will have to downgrade it to LJC or LJA for the radio unlock option to appear - the radio images can be found here - http://forum.xda-developers.com/showthread.php?t=1880987
That trick works on the Note 2 as well, however, I don't know if the radio is an issue with the Note 2 you will have to check the Note 2 forum but chances are if Samsung updated it, you will have to downgrade the radio to get the option back.
StraightTalk will not sell you a SIM for at&t if you don't have at&t service in the area - at&t's StraightTalk SIM does not roam on T-Mobile except rarely as at&t's roaming agreement with T-Mobile is extremely limited.
One final thing, I wish you good luck. StraightTalk was a horrible experience for me and at&t throttles you like nobody's business. On the plus side though, Tracfone's wholesale contract with at&t means that you get access to their POSTPAID network which means you get better coverage than at&t's own prepaid or any other MVNO of at&t for that matter.
richardlibeau said:
Yeah you can use tmobile's straight talk on at&t network. Just pop in sim and select roaming and available network select at&t. Should connect no problem
Sent from my SGH-T999 using Tapatalk 2
Click to expand...
Click to collapse
This is not what the OP was asking. He wants to switch his T-Mobile branded S3 with T-Mobile branded service to StraightTalk using an at&t SIM and service.

Sprint / Tmobile User

My son just bought an Iphone (dumbass) anyway.
He was on Sprint and me / wife are on tmobile.
Is it possible for to setup phone (Sprint Samsung SIII No Sim Card) for her to use but on our Tmobile account (Sim Card in her current phone)?
Let me know.....is there a thread that can help me out....or is it just not possible?
Not possible, Sprint is CDMA technology and T-Mobile is GSM. Sprint doesn't use a SIM card.
Sent from my ME302C using Tapatalk
Thanks
Okie Dokie!
Thanks for the quick reply!

[Q] Can I use the Sprint S6 on another carrier if I unlock it?

I want to get this phone but might want to switch carriers soon. I was planning on doing the Sprint EasyPay for it and paying off the rest of the phone if or when I decide to switch carriers. After I pay it off in full and unlock it, would I be able to use it on T-mobile, AT&T, Verizon, or any of their MVNO's? Basically what I am asking is does the Sprint S6 support the necessary bands that the other networks operate on, and if so, would calling or texting still work? I have heard of some phones that have a SIM card slot for the LTE SIM on Sprint, but voice and text don't work once unlocked and used on another carrier.
Thanks,
Kyle
I would really like to know the answer to this as well. I have been searching without a definitive result.
Specifically, can unlocked Sprint phone be used on Verizon?

Will Sprint Tab S4 work on T-Mobile Data Plan

I am on TMO but I got a great deal on a Sprint S4. Given the proposed merger between Sprint and TMO I was wondering if the Sprint version will work on a TMO data plan. If not, will Sprint unlock a non blacklisted IMEI to allow its use on TMO?
Thanks
I believe Sprint is CDMA and TMobile is GSM so I don't believe you can use it on TMobile today. You'll have to call TMobile to confirm. If they do merge most likely they'll quickly have SIMs to support the tablet. So I'd hold onto the tablet.
aspexil said:
I believe Sprint is CDMA and TMobile is GSM so I don't believe you can use it on TMobile today. You'll have to call TMobile to confirm. If they do merge most likely they'll quickly have SIMs to support the tablet. So I'd hold onto the tablet.
Click to expand...
Click to collapse
Doing some additional research, LTE is based upon GSM, not CDMA. The Sprint version has a sim card slot. If I can get it unlocked it should work fine on any other LTE carrier using the same frequencies. There's a store in town that charges a fee to unlock devices. I'll stop by and see if they can unlock my S4. It is also interesting that the Sprint version does not have the word "Sprint" printed on the back. I wonder if the Sprint version is the same as the international version locked to Sprint.

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