[Q] AT&T update with T-Mobile sim - T-Mobile Samsung Galaxy S 4

I have an AT&T Galaxy S4 (i337 unlocked) that i am using with T-Mobile. My firmware is I337UCUAMDB_I337ATTAMDB_ATT. i realized that it is DB, not DL. When i try to check for updates, it get an error "Software Update Interrupted" i know this is going to happen since it is checking my sim. I have a T- Mobile sim. is there any way to receive updates without an AT&T sim card. I have one, but it hasn't been activated. is there any workaround to this?
I will be also posting this in the AT&T forums

You can use kies on your PC..
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Related

Note 2 Constantly loses signal

Hi, I bought a SGH-i317M (Note 2) from Canada of Rogers Comunications Inc.
I had to trip to Mexico for some months, here I'm with Iusacell and here begins my problem, constantly loses the signal and it returns in 5 minutes approx or when I restart manually the signal (flight mode).
I have the stock rooted room from Rogers.
Please, I hope you can help me to solve this problem.
...
You're in the wrong forum. This is for the Sprint variant SPH-L900 Note 2.
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And moved to correct device

T889 on T-Mobile Prepaid

Hi guys wondering if wind mobile Note 2 T889V will work on T-Mobile Prepaid service? Does anyone here use T-Mobile prepaid? What they think of data speeds? I please share. The phone is unlocked.
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[Q] Switching to Virgin Mobile

So I have a Sprint Galaxy S2 rooted and running CyanogenMod, and am considering switching to Virgin Mobile since they are cheaper. Since they use Sprint's network the phone must be compatible, so the question is, how to reprogram it to work with their service?
Google
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Cross Carrier Flashing

Hello all, I have a quick question I was wondering if someone had the answer to. I have tried searching but could not find what I was looking for. Basically I have a friend that has the Verizon variant of the Note 2, and another friend that wants a Note 2. I am trying to help them both out if possible. Now my one friend uses Sprint as his provider, and wants me to see if there is a way to flash the Verizon phone for use on Sprint with his plan so he does not have to renew his contract. I know there are stock ROM images of the each Note 2 out there. Is it possible to just flash the Sprint stock firmware, modem, etc to the phone and have it work? If not, is there another way? And finally, if it is possible, would all of the features work? Thanks so much for your help!
He can but will more than likely not have access to 4g lte on the network
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Can I flash from virgin to sprint??
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prepaid

I have a d2tmo but I want to switch to prepaid. What is the best GSM carrier to go with? I live in NY.
Check for Straight Talk or Simple Mobile. They're both pretty decent for prepaid services.
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And "Best" is always a relative word and in this case is based on signal strength/pricing/phones available
I was on the simple mobile website and I saw that I can order a sim from them. One of the questions was what type if phone and there was an option for an unlocked GSM (which right now my phone is not) but there was an option for T-Mobile compatable. So if i choose that one does that mean I do not have to unlock my sim? I know it is easy to unlock but if I don't have to I will just get that one. Anyone have simple and know the answer?
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