I cant find a clear answer if an ATT galaxy s5 will work on tmobile ( phone is unlocked) or will it be missing some features
and also if I install a tmobile stock rom on att phone will it have the wifi calling and all the features of a t mobile phone?
im trying to buy a phone today and cant find any solid info on the internet its a bit confusing
There are lots of existing threads that ask and answer this, so your search missed those (or you didn't search).
Anyway, you can use a TMB phone on ATT without any issues. It doesn't work as well in the reverse as you want to do. The ATT model is missing several frequency bands that the TMB phone has. And ATT, unlike most carriers, also locks the bootloader.
So a (SIM unlocked) 900A phone will work on TMB but will have some gaps in coverage. In a large city with lots of redundant bands that may not be much of a problem. But you will be subject to more congestion, dropped calls and outside of large, urban centers you may even have no coverage i.e. if an area is only served by the bands your phone doesn't have.
And the locked bootloader means that you can't install a custom kernel or recovery. Although you can emulate them with the Safestrap program on an ATT handset. The best way to get the TMB apps, wifi calling, etc is to root and install a custom ROM that is 900T based or 900F based, with the TMB apps added.
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It's running lollipop oc1 and I have flash fire...
It is possible to change the phone to GSM from CDMA, but you have to be on a stock ROM and you have to have a service menu which can be accessed by the dialer. I don't believe the Verizon version has the service menus however as Verizon removed them. If I'm correct about that, there is no way to change the phone to GSM, which you need for T-Mobile. Even if you can do it, it's highly unlikely you would get LTE as the Verizon phone doesn't use and doesn't have the T-Mobile LTE frequencies.
Good evening!
I recently purchased the VZW S7. My immediate plan is to root it and then enable the Samsung carrier info (which VZW disables) so I can get to the engineering screens to check out LTE/network connection information.
I have been searching all over XDA for some type of answer to my question and haven't found it yet. What I can gather is the VZW variant has all the hardware requirements to have every band from every major carrier in the US, however VZW has disabled specific bands in their firmware. This lead me to thinking I will push the 930U firmware to it which, from what I have read here, unlocks all the specific bands as dictated by the SIM card currently inserted into the phone.
Here is my question: with the 930U firmware, how complicated is it to switch carriers on-the-fly, and to have all the bands a particular carrier utilizes?
My main line is VZW, but I also have a T-Mobile line on my Nexus 6P. However, there is zero engineering mode on the 6P, so I am unable to see information like current band, bandwidth, carrier aggregation status, etc. SignalCheck Pro only tells me the band.
So if I want to use the S7 on Verizon and then swap my T-Mobile SIM card in, how does the phone handle this, and it is a hassle once I put my VZW SIM back in?
I hope all this made sense. Essentially what I am wondering is if switching carriers on the fly is as easy as it is on the 6P- just pop the card in and go, with all the necessary LTE bands enabled.
Thank you for your time!
Hi I was wondering if anyone had tried to activate a T-Mobile S4 variant on Sprint networks . I read where one will need a valid ESn Number . I realize that Sprint uses different bands for their voice text and LTE data then T-Mobile does . Would I need to install a Sprint variant S4 rom to solve this issue with the cellular modem radio . Any help appreciated
Late reply here. You have issues that will make it very difficult for you to accomplish what you're trying to do.
1. You can't install a Sprint ROM on a T-Mobile device. Odin will check to determine whether the ROM is correct for the device, and if it isn't, will refuse to install it.
2. Installing a Sprint baseband on a T-Mobile device, if it were possible, would render the wireless capabilities of the device useless until the T-Mobile baseband were restored.
3. You'd need to convert the IMEI to an ESN. This is perhaps the easiest thing to do since the ESN is the IMEI, but ignoring the very last digit in the IMEI (the check digit).
4. Sprint is extremely reluctant to activate non-Sprint phones on their network, to the point of outright refusal in some cases.
I personally recommend switching from Sprint to T-Mobile or an MVNO using T-Mobile if you really want to use this device. Not only is the service better than Sprint, you don't have any hoops to jump through in order to get the S4 working on the network. If you insist upon using Sprint, find a different device.
All,
I have an original TMobile, Galaxy S8, G950U. I unlocked it through TMobile and I purchased a Straight Talk BYOP kit from the local Wally-Mart, and put the AT&T SIM into my S8.
I know there are a number of guides out there, to do carrier switching. Trust me I have downloaded GBs worth of carrier firmware and combination firmware, eng boot, what have you. Nothing has worked as far as allowing me to carrier switch.
Here is my issue. The building where I work sucks for Tmobile. It is a hardened building and TMobile's signal does not penetrate. AT&T and Verizon work great. I unlocked my phone through TMobile and was able to flash the unlocked firmware on it. But, in theory, this did not enable all the AT&T radios, because I have an AT&T work phone and it works fine in the same spot, but my S8 cannot send or receive calls, in the exact same spot.
The problem is that I am on Bootloader V3 and I cannot for the life of me find an EngBoot with V3, so I can do a carrier switch and flash the AT&T modem. If someone has been able to do this, or if I just suck at searching, then please let me know, I'll be glad to take the hit.
So if anyone can point me the right direction for BLV3 carrier switches, I would greatly appreciate it!
Thanks all, for looking and trying to help.
I recently bought used Sprint Samsung Galaxy S7. It turned out the phone is locked to Sprint and is on bootloader v5. I called Sprint but they refused to unlock it even though it is paid in full because I am not the owner of the account that phone is associated with. I bought it from an electronics recycling company, so they cannot help with this. I would like to use it with a gsm carrier, like ATT or T-Mobile. What are my options here? Can the phone be unlocked by third-party? Even if unlocked, can the necessary bands and other settings be made available? Any hacks that trip KNOX are unfortunately not acceptable in my case (it seems putting U firmware with BL5 will trip KNOX).
IMEIGURUS.COM should have a carrier unlock for you. not saying its free.
That is fine but after it is unlocked would I be able to use it with t-mobile or att without issues? I read a lot about LTE frequencies locked, missing menus to set APNs, etc.
It is fine if the answer to my original question is to simply get rid of the phone. I am already considering this, as I naively thought that all it would need is a call to Sprint to unlock it and then flashing the U firmware.
grga1 said:
That is fine but after it is unlocked would I be able to use it with t-mobile or att without issues? I read a lot about LTE frequencies locked, missing menus to set APNs, etc.
It is fine if the answer to my original question is to simply get rid of the phone. I am already considering this, as I naively thought that all it would need is a call to Sprint to unlock it and then flashing the U firmware.
Click to expand...
Click to collapse
There is a thread here about unlocking additional LTE bands.