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Straight Talk AT&T Sim and LTE

I've read numerous threads here and elsewhere on the web saying that if you have an old Straight Talk AT&T sim card you have to buy a new one to get LTE to work with your Nexus 5. This was not the case for me so I thought I'd share. I ended up calling Straight Talk to ask them about it and after waiting on the phone for 30-40 minutes they said they "enabled" LTE on my account. They then gave me the following APN settings to use:
Name: Straight Talk (can be whatever you want)
APN: tfdata
Port: 80
MMSC: http: //mms-tf.net (no space after http:, had to add one because I can't post links)
MMS Proxy: mms3.tracfone.com
MMS Port: 80
Keep in mind, the APN type is not set. I was skeptical that they had done anything at first because after using the seemingly lackluster APN settings they gave me I still wasn't connecting to the LTE network. However, after waiting a bit (maybe 30 minutes or so) my phone started connecting to the LTE network. The only thing I cannot get to work so far is receiving MMS messages. Also, it's worth noting that the Straight Talk person I spoke to didn't really sound like they knew what they were doing, so I feel like I kind of lucked out with this one.
************************* EDIT/UPDATE *************************
So my billing cycle finally started again since the above happened. It seems that whatever Straight Talk changed with my account from when I talked to them has been reset. With the above settings I no longer get a data connection at all and after my phone is on for so long it will just stop connecting to any cellular service at all. I changed my APN settings to what they were previously and my phone started to work again. This is beyond frustrating - I'm giving up on the old AT&T sim card and will try a new one as most other people have suggested. The APN settings for old Straight Talk AT&T sim cards if anyone needs it:
APN: att.mvno
MMSC: http: //mmsc.cingular.com (no space after http
MMS proxy: 66.209.11.33
MMS port: 80
APN type: default,supl,mms,hipri

I've tried using these APN settings to no avail and had to revert to the old settings. Lately my signal constantly bounces between 3g and H(not H+). I'm wondering if I should see if this is possible and a solution for me.
Sent from my SAMSUNG-SGH-I317 using XDA Premium 4 mobile app

Here is the solution for me. I have a Optimus G Pro. Was on ATT gophone SIM for about 6 months. LTE worked fine. Switched to Straight talk SIM and only got HSPA. Called Straight talk because I read somewhere that they had to activate the LTE on your account. Was on the phone with 3 different people for an hour. They asked what kind of phone did I have and my zip code. Then they had me go through my APN settings. All was fine. Then she said that LTE is not available in my area. I said BS. She said please refrain from using the B word. I said huh? The B word. Oh. The word BULL? she said yes. haha. Anyway I had ordered 2 SIMs from the website for $6.99 with free fedex shipping earlier. I needed an airtime card so I went to Walmart and saw the activation kits that includes airtime cards. So I got that. It has an activation code in the package for CDMA phones and came with 4 SIM cards. A nano ATT and a nano T-mobile for iphone. Also came with a full size card for ATT and one for Tmobile. The cards could also be punched out to make them a micro SIM. First of all the SIMs were in the wrong slots in the package. I was a little confused at first but then I figured out what the did. Here is the key: the SIM card that I ordered from the website has a model number of: TF64PSIMC4MB. The one that came in the activation package model number is: TF64PSIMC4BMB. Notice the "B" before the last MB. I called Straight Talk and used their automated system to switch SIM cards on my account and about 10 minutes later the new SIM starting working with LTE. I verified this earlier in the day with a friend of mines SIM card. He had the one without the B. I swapped out SIMs and he no longer got LTE and I did with his SIM. So... Make sure you get the SIM without the B.
On a side note: I was getting anywhere from 12 to 48 Mbps on GoPhone. I just now ran a speedtest and got 12 Mbps on Straight talk. I will run some more tests at different times and different locations and report back if anyone is interested.

check here http://forum.xda-developers.com/showthread.php?t=2526095 and the straight talk thread in the general forum.

**Potential carrier unlock

Would you guys trust this http://www.sieempi.eu/blog/2011/09/22/universal-sim-unlock-for-s-offed-htc-devices-536
I've done everything except apply it lol I sent them my email phone type and imei and they sent me an email with a config.dat file attached. Please help!
Sent from my HTC6525LVW using XDA Premium 4 mobile app

I thought the m8 was already Sim unlocked from the get-go.

Me too but I'm using a h2o sim (att) and I'm getting a non Verizon SIM error plus I can't send or receive pics...so I think I should say SIM unlock lol
Sent from my HTC6525LVW using XDA Premium 4 mobile app

Yeah, idk about the unknown Sim message. Are your carrier settings all correct? Other than that much I'm not much help as I'm strictly on Verizon

You need to put H2O's APN settings, just like you need to with ANY phone that you use H2O on. All Verizon LTE phones are SIM unlocked.

brandogg said:
You need to put H2O's APN settings, just like you need to with ANY phone that you use H2O on. All Verizon LTE phones are SIM unlocked.
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All current models may be, but this hasn't always been true. My previous phone, a Droid Razr MAXX, is LTE but would not work with US GSM carriers. It would work fine outside of North America with a locally-provided SIM, however.

Right, should have mentioned "since late 2012" or something like that. Point being though, his M8 is already unlocked.

All of Verizon's LTE enabled smartphones are required to be SIM unlocked by the agreement of the spectrum auction. The frequency bands they use for LTE are part of that spectrum. However, just because it's SIM unlocked, doesn't make it plug and play. You need the APN info for the carrier you are trying to use.
I took my Galaxy S4 to St. Maarten and rented a SIM card. Took me an hour to get it working correctly because the moron working in the store had no clue what the settings were. I had to call a number from their store and sit on hold with a CS rep for the carrier to get the proper APN settings. WHen you have a verizon sim installed, you cannot alter the APN settings. They are locked for VZW....but when you remove it and insert another carrier....well then you can enter them.

brandogg said:
You need to put H2O's APN settings, just like you need to with ANY phone that you use H2O on. All Verizon LTE phones are SIM unlocked.
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I've done that..I put them in like 100 times and everything works but mms..I can't send or receive them..do you have h2o?
Sent from my HTC6525LVW using XDA Premium 4 mobile app

No, but I am a dealer. Make sure you are selecting the APN after you put it in too. Actually you should probably call them, you used to be able to just put in a single APN, but the last time I had to put in two different ones, which makes absolutely no sense since you can only be using one of them. If this doesn't work, give them a call...
Name: H2O Wireless (or whatever you want, really)
APN: att.mvno
MMSC: http://mmsc.cingular.com
MMS Proxy: 66.209.11.33
MMS Proxy Port: 80
Make sure you hit menu - save, then select that APN. Do not put any other settings in or change anything else.

brandogg said:
No, but I am a dealer. Make sure you are selecting the APN after you put it in too. Actually you should probably call them, you used to be able to just put in a single APN, but the last time I had to put in two different ones, which makes absolutely no sense since you can only be using one of them. If this doesn't work, give them a call...
Name: H2O Wireless (or whatever you want, really)
APN: att.mvno
MMSC: http://mmsc.cingular.com
MMS Proxy: 66.209.11.33
MMS Proxy Port: 80
Make sure you hit menu - save, then select that APN. Do not put any other settings in or change anything else.
Click to expand...
Click to collapse
Thank you.. I had those ones in already. I have both the apn set of settings in. I think its something on their end. Every time I call they say they'll call back in 24 hrs and blame it on my phone lol but I was having this same issue on my galaxy note 3. So idk just waitin on a fix I guess.
Sent from my HTC6525LVW using XDA Premium 4 mobile app

This app helped me big time when going over seas. Sometimes there are many apn's for the same carrier. Usually one will be for MMS
Sent from my SM-N900V using Tapatalk

stedrocklp said:
This app helped me big time when going over seas. Sometimes there are many apn's for the same carrier. Usually one will be for MMS
Sent from my SM-N900V using Tapatalk
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What app?
Sent from my HTC6525LVW using XDA Premium 4 mobile app

https://play.google.com/store/apps/details?id=ale.android.apnmanagerwithanimation . Would have been good if I added the link. My bad
Sent from my SM-N900V using Tapatalk

Moto G 2015 LTE Problem

The LTE on my phone switches to 3G after reboot and does not revert to LTE without a lot of tinkering with the settings. I use Consumer Cellular, the APN settings I have confirmed with them, and the phone is provisioned for LTE on their side.
What I am wondering is if anyone is using Consumer Cellular with this phone, and if so is the LTE working as it is supposed to? I have excellent LTE coverage here, other phones in the house on the same plan (iPhones) get LTE as they are supposed to( not reverting to 3G).
I used my Simm card from my old phone (Moto G 2nd Gen) in the new 3rd G Moto. Could this be something with the Simm? I am not sure where to go with this. Consumer Cellular tells me there is nothing they can do for me.
Any ideas or insight would be helpful.
Thanks...

I'm on Consumer Cellular and I have no problem getting LTE. I moved the same sim I had in my 2nd gen to this phone. Get them to send you another Sim. They've next day shipped a replacement Sim to me in the past at no charge. Just tell them the old Sim is bent, broken or something.
Sent from my GT-P5210 using Tapatalk

Tel864 said:
I'm on Consumer Cellular and I have no problem getting LTE. I moved the same sim I had in my 2nd gen to this phone. Get them to send you another Sim. They've next day shipped a replacement Sim to me in the past at no charge. Just tell them the old Sim is bent, broken or something.
Sent from my GT-P5210 using Tapatalk
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Click to collapse
Thanks for the reply, so you think it might be the Simm? I will do that, can you please share your APN settings with me? That way I can at least verify that they are giving me the correct settings (the customer service is not that great).

Quincy34 said:
Thanks for the reply, so you think it might be the Simm? I will do that, can you please share your APN settings with me? That way I can at least verify that they are giving me the correct settings (the customer service is not that great).
Click to expand...
Click to collapse
The below settings are what I've always used.
APN
att.mvno
Proxy
66.209.11.32
Port
80
Username
Not Set
Password
Not Set
MMSC
http://mmsc.cingular.com
MMS proxy
proxy.mvno.ccmobileweb.com
MMS port
80
MCC
310
MNC
410
Authentication type
None
APN type
default,mms,supl,agps,fota,hipri

Verizon S7 Edge (SM-G935V) on AT&T with LTE tip

Hi all, just giving a quick 2 cents after my recent experience attempting to activate a Verizon S7 Edge on AT&T.
*Following a data reset you will need wifi for initial setup if you are using an AT&T sim card.
After following the guide in AT&T's web site for APN settings I was not able to get any data or mms service (this is using the NXTGENPHONE APN), so I did some experimenting. The following APN settings worked for HSPA+ data and mms, but NO LTE and NO MMS if connected to WIFI:
Name: ATT
APN: phone
Proxy: not set
Port: not set
Username: not set
Password: not set
Server: not set
MMSC: http://mmsc.mobile.att.net
Multimedia message proxy: proxy.mobile.att.net
Multimedia message port: 80
MCC: 310
MNC: 410
Authentication type: not set
APN type: default,mms,supl,hipri
APN Protocol: IPv4/IPv6
APN roaming protocol: IPv4/IPv6
Bearer: unspecified
Mobile virtual network operator type: none
Mobile virtual network operator value: not set
So at this point I had NO LTE service and NO MMS IF connected to wifi. Utilizing the LTE Discovery app from the play store I could see that LTE was "not available" but on my wife's S7 she was getting LTE on Band 4. To make a long story short I got online to an AT&T chat rep who told me that HSPA+ and LTE are the exact same and they just show up different on different phones... THIS IS NOT CORRECT!
I educated the dumba$$ rep that HSPA+ and LTE are not the same, and asked to speak to a tech support SPECIALIST. After a short wait for transfer the final solution that worked was to have the specialist change the IMEI on file for my phone number to an AT&T branded Note 5 (I had an old one on the account and just used that). I then restarted the phone and had to wait about 10 minutes for the HSPA+ to change to 4GLTE signal. MMS now works when connected to wifi as well! Please note that this was achieved using the above mentioned APN settings- using AT&T's guide for NXTGENPHONE still results in NO data or MMS.
So the bottom line when transferring a Verizon S7 Edge to AT&T:
1. Use the above APN settings
2. Call AT&T and change your phone number's IMEI in their system to an LTE capable AT&T branded device (in my case note 5 worked)
3. Reboot and wait about 10 minutes for the signal to register
**DON'T let a representative tell you that HSPA+ and LTE are the same thing.. we're talking 8 Mbps vs 50+ Mbps download and 2 Mbps vs 20+ Mbps upload!
Cheers
***Admin I accidentally posted this in the ROM section; can it be moved to discussion/guides? thanks

Did you by chance even try the U firmware? It should work on any US carrier since its the firmware on the US Unlocked S7E and should have necessary files

elliwigy said:
Did you by chance even try the U firmware? It should work on any US carrier since its the firmware on the US Unlocked S7E and should have necessary files
Click to expand...
Click to collapse
I think I'm going to give this a try, but im on T-Mobile.

nahtnam said:
I think I'm going to give this a try, but im on T-Mobile.
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Click to collapse
Ssmsung released the g930u device which is identical but with a universal firmware for the US.. its supposed to work on any US carrier including TMO

elliwigy said:
Ssmsung released the g930u device which is identical but with a universal firmware for the US.. its supposed to work on any US carrier including TMO
Click to expand...
Click to collapse
Sorry, im confused. I was thinking of following this guide and seeing if it works: http://forum.xda-developers.com/ver...de-flashing-sm-935u-firmware-verizon-t3415145

nahtnam said:
Sorry, im confused. I was thinking of following this guide and seeing if it works: http://forum.xda-developers.com/ver...de-flashing-sm-935u-firmware-verizon-t3415145
Click to expand...
Click to collapse
you just flash the odin tar then root as usual.. the U firmware is for the US unlcked

I flashed first the 935U firmware and then activated the phone with AT&T, once you insert the sim the phone reboots, changes the APN while it reboots and once it finished all data/talk/text services with AT&T are fully functional. I am guessing Verizon lokcs down the APN features of the 935V firmware so that we stay with verizon.

I'm planning on flashing that rom tomorrow. The issue I have is modifying it for unlimited tethering as I use MetroPCS and pay for unlimited Internet. Fox fi does work but counts against my hotspot data. I tried it with a vpn but I use my hotspot for Netflix and I get an error saying to disable the proxy service or vpn. Wifi tether router connects but I get no Internet. I guess the main issue for me is getting the damn netflix to stream off my hotspot via chrome cast. I'm all ears, open to suggestions and help. Ps. I am currently rooted on Verizon rom. All apps are also paid apps not trying to free load here as I believe hard work should be compensated for. I also would love to have the video calling and wifi calling that I pay for.

davidmejiam7 said:
I flashed first the 935U firmware and then activated the phone with AT&T, once you insert the sim the phone reboots, changes the APN while it reboots and once it finished all data/talk/text services with AT&T are fully functional. I am guessing Verizon lokcs down the APN features of the 935V firmware so that we stay with verizon.
Click to expand...
Click to collapse
My brother actually tried this. I sent him my 935V after I flashed it to the 935U firmware. He had the same problems the OP had where MMS and data won't work unless it's on the HSPA+ APN settings. He's coming to visit soon so I will try going to a store and seeing if they can set it up with a new sim. Or should I just call them and have them switch the imei?
Not sure which route is better here.

I actually just flashed the U firmware and now am right back where I started. Could be that for my region att has a hard time registering it. I'll be calling att this week and will post back my findings. I do like the U firmware better though. Seems cleaner and faster.

fredmc2020 said:
I actually just flashed the U firmware and now am right back where I started. Could be that for my region att has a hard time registering it. I'll be calling att this week and will post back my findings. I do like the U firmware better though. Seems cleaner and faster.
Click to expand...
Click to collapse
I think AT&T just block LTE access for non branded devices. Since you mentioned that it works after you register the sim with your AT&T note 5.

I just did a massive conversion of our squad car laptops for law enforcement at work from VZW to AT&T. The way they provision LTE access is trying the ICCID (SIM Card #) to the IMEID of the devices GOBI modem. All of my rigs came up on HSPA+ and not LTE. Once I sent the ICCID and IMEI of the particular unit to our government rep the mobile came up on LTE. I'd try calling them and saying you need LTE provisioned on your SIM. Provide the ICCID of your SIM, the IMEI of your device and your mobile phone #. Hope this helps.
Sent from my SM-G935V using Tapatalk

whirl08 said:
I just did a massive conversion of our squad car laptops for law enforcement at work from VZW to AT&T. The way they provision LTE access is trying the ICCID (SIM Card #) to the IMEID of the devices GOBI modem. All of my rigs came up on HSPA+ and not LTE. Once I sent the ICCID and IMEI of the particular unit to our government rep the mobile came up on LTE. I'd try calling them and saying you need LTE provisioned on your SIM. Provide the ICCID of your SIM, the IMEI of your device and your mobile phone #. Hope this helps.
Sent from my SM-G935V using Tapatalk
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Click to collapse
I tried this with my brother's phone and they said that because it's a non at&t branded device there were limitations on what may or may not work when it comes to data or messaging because they don't guarantee anything as it's not theirs. So he had HSPA+ speeds for a few days until i saw this thread and called again. I gave them the IMEI from a display phone and it worked fine after that.

cadcamaro said:
I tried this with my brother's phone and they said that because it's a non at&t branded device there were limitations on what may or may not work when it comes to data or messaging because they don't guarantee anything as it's not theirs. So he had HSPA+ speeds for a few days until i saw this thread and called again. I gave them the IMEI from a display phone and it worked fine after that.
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Glad to hear it man!
Sent from my SM-G935V using Tapatalk

whirl08 said:
Glad to hear it man!
Sent from my SM-G935V using Tapatalk
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Thanks, he didn't really care as he's just happy with the phone but I'm glad I got it working as it was intended. By any means necessary.

After flashing the u firmware I called att and was able to get it activated again. Just takes persistence and patience lol.

fredmc2020 said:
After flashing the u firmware I called att and was able to get it activated again. Just takes persistence and patience lol.
Click to expand...
Click to collapse
Glad to hear it worked. I remember when I had a Nexus on AT&T, and I had to call them to have LTE work using a different phones info lol.

Does anyone have any experience with Cricket? I'm thinking about using my S7 Edge on the U firmware with Cricket, but I know they don't have the same level or type of customer service as AT&T. I'm hoping it will "just work", but it sounds like it might not.

davidmejiam7 said:
I flashed first the 935U firmware and then activated the phone with AT&T, once you insert the sim the phone reboots, changes the APN while it reboots and once it finished all data/talk/text services with AT&T are fully functional. I am guessing Verizon lokcs down the APN features of the 935V firmware so that we stay with verizon.
Click to expand...
Click to collapse
this is untrue I'm on Verizon with my s7 edge and I have pulled out the sim and put in my Tmo sim and can use it my s7 is not payed off and can use with any carrier but u do have to have your settings to global

geoff5093 said:
Does anyone have any experience with Cricket? I'm thinking about using my S7 Edge on the U firmware with Cricket, but I know they don't have the same level or type of customer service as AT&T. I'm hoping it will "just work", but it sounds like it might not.
Click to expand...
Click to collapse
Hi Geoff,
Don't know if you're still considering using a Verizon S7 edge on Cricket. I currently have one and it works fine with the network. And I have no issues with calls or MMS via LTE. You only lose connection go Band 17.
Sent from my SM-G935U using Tapatalk

Refurb XT1250, won't take MNC of 012?

Hey all - just got refurb XT1250 and trying to put in Verizon APN info. If I put in an MNC of 012 like all the guides say to do, when I hit "Save", the APN simply disappears. If I let it use the 600 that is automatically puts in for MNC, the phone only gets 3g. Any ideas?
Many thanks!!

Im looking for the Verizon CMDA for Droid Turbo xt1254 apn settings.. i can never send MMS picture messages.. any help?