Develop Bugs

[Q] Duo Sim Adapter ? Wouldn't it be amazing if....

Since my Vibrant is unlocked, I can switch between "Rogers" and "Wind Mobile" (Canada)
The only reason i'm even considering Wind Mobile, is because of their Unlimited Data plan... and I am well aware of their reception and coverage issue...
Whether or not Wind is willing to give me a Data plan alone is a different story....
Anyways, I was thinking... could i use the DuoSim Adapter and have both AWS & GSM simcard in mine...
and in theory, I use Wind Mobile's Data plan and Rogers Voice plan in one phone.... is this even possible?

I doubt you could use both at the same time, but I thought I saw an app at one point which actually allowed you to toggle.

not aloud to post outside linky. edit the one below:
hxxp://[dubyadubyduba].simore.us/us/index.php

I'm assuming this is for mini sim cards only, or ones that you have cut in half?

tanjeraldyne said:
not aloud to post outside linky. edit the one below:
hxxp://[dubyadubyduba].simore.us/us/index.php
Click to expand...
Click to collapse
i can't seem to goto that site..
i tried simore.us it worked... but that site doesn't mention "AWS" technology...
but lets say hypothetically it does support "AWS".. and i fit it inside my VIbrant... how will i make the switch from android.. through a software?? how does automatic switch work?

I think you should just stick with one of them.

yeah i'm trynna figure out if my T-Mobile Vibrant supports Rogers 3G.... any1 knows?

[Q] Desire Z A7275 (At&t 3g version)

So I've been using an unlocked g2 on At&t for about a month now and I absolutely love it. I recently found out that the Desire z A7275 model will support At&t's 3g bands in the US. Because of the 3g compatibility, I am most likely going to switch.
I currently have my g2 temprooted and overclocked. This may be a silly question but...the change in band frequency on the Desire Z A7275 won't change anything as far as rooting, will it?
Thanks

Not at all. They are essentially the same device. Using an unlocked/unbranded NAM Desire Z myself on AT&T and have had no problems rooting, modding, etc.

I have the A7275 on AT&T also. Perm rooted (with SuperCID,S-Off) and overclocked no problem.
On a side note, the Bell stock ROM is missing HTC Locations and Car Panel. But I use Google Maps anyway, and I find the car panel to be kinda useless.
The Bell stock ROM comes with a good amount of bloatware. But I was able to remove most of it with Titanium Backup, and the rest with an app called Absolute System Root Tool.

You guys *should* be able to use a custom ROM like Virtuous to keep Sense but go with a more stock Sense ROM.
I thought about getting an AT&T one and staying with them, but their data network in my area is freakin awful. Been with them 10 years, since they were SouthwesternBellWireless, and finally switched to T-Mobile for the G2. My coverage isn't any better, but at least when my phone says '3G', I get 3G speeds. Plus it's ~$50/mo cheaper for 2 phones.
LOVE the G2/Desire Z tho.

the orange bandit said:
You guys *should* be able to use a custom ROM like Virtuous to keep Sense but go with a more stock Sense ROM.
Click to expand...
Click to collapse
Using custom ROM's isn't an issue. I am running Cyanogen 6.1 as I'm not a big fan of the Sense UI. Cyanogen's ROM feels much snappier on the device and is a cleaner, more basic look overall.
From my understanding, once you are Rooted and have S-OFF, any ROM that is compatible with the G2 will work with the Desire-Z. They did merge the two forums into one. These are the exact same devices, just with different band frequencies.

I know this is off topic, but as a former CSR for AT&T Mobility, I have absolutely no idea why you would go to such lengths to use their service. Is T-Mo just not available in your area?

Question, where did you guys get your A7275 from and for how much? I want one

illogic6 said:
I know this is off topic, but as a former CSR for AT&T Mobility, I have absolutely no idea why you would go to such lengths to use their service. Is T-Mo just not available in your area?
Click to expand...
Click to collapse
Trust me, if I could get out of at&t's service I would. Unfortunately, I'm on a family plan with 4 lines. I havent upgraded in years, so technically, my contract is up. However, the rest of my family upgraded this past summer so I'm stuck with at&t for another 2 years. Early termination fees are too much and I can't afford to go pay for my own plan on another carrier. And, on top of that, T-mobile just arrived in my area and only has one or two towers.
Another question though: I've seen some unofficial alternate color schemes of the g2/desire z (black/blue). Does anyone know if there are any alternate versions of the 850/1900 3g desire z?

r34p3rex said:
Question, where did you guys get your A7275 from and for how much? I want one
Click to expand...
Click to collapse
http://negrielectronics.com/htc-desire-z-850-1900-3g-unlocked.html
^This is where I will probably end up buying mine. Also, check out the below site for coupon codes ($35 off).
http://www.retailmenot.com/view/negrielectronics.com

cmccollough said:
Another question though: I've seen some unofficial alternate color schemes of the g2/desire z (black/blue). Does anyone know if there are any alternate versions of the 850/1900 3g desire z?
Click to expand...
Click to collapse
I think that black/blue one was a prototype or at least an early idea for the colour scheme. There's no news that I'm aware of on any alternate colour schemes at the moment.

illogic6 said:
I know this is off topic, but as a former CSR for AT&T Mobility, I have absolutely no idea why you would go to such lengths to use their service. Is T-Mo just not available in your area?
Click to expand...
Click to collapse
T-Mob coverage has not been great in my area (although I haven't really investigated it too thoroughly in the last couple years). I also require international roaming service for work, and AT&T is the best for that.

cmccollough said:
http://negrielectronics.com/htc-desire-z-850-1900-3g-unlocked.html
^This is where I will probably end up buying mine. Also, check out the below site for coupon codes ($35 off).
http://www.retailmenot.com/view/negrielectronics.com
Click to expand...
Click to collapse
I got mine from Negri. They were great. They have webchat feature, and the customer service rep was very helpful, and was able to confirm the phone was in stock. I got a shipment confirmation about 2 hours after I placed the order, and the phone was in my hands 2 days later.

Unlocking T-Mobile for AT&T service

hi everyone:
I have been looking via numerous thread online on many Android forums especially here and have been unsuccessful for the past 2 days now. So I figured I would need to create a thread and finally give in and ask for some help. I have a T-Mobile Samsung Galaxy 3 phone and I need to unlock it so that it will work on my AT&T service. Now i understand about rooting the phone and being able to play with themes etc, but its not that great if I can't use the phone itself.
Now without coming up with some kind of answer I must have watched about 40 youtube video's hoping to find out some kind of information. Mostly what I got out of it was numerous website that offer unlocking for phones at a certain price.
unlockcodesource(.)com
unlock2go(.)com
mobileunlockcodes(.)co.uk
Has anyone ever used any of these website or can someone give me some good advise on how I can get this phone unlocked please/
~Aqua

I think the toolkit stickied in the development forum has an option to SIM unlock the GS3. I have not tried this, and do not know if it works, but if the option is there, you might want to give it a shot.

If you're on contract with t mobile and your account is in good standing with them. Call them tell them you're going over seas and need to unlock your phone so you can use it. They will send you unlock code ... then pop in an att sim card and it will prompt you to enter the unlock code t Mobil gave you. Done
Sent from my SGH-T999 using xda premium

thanks _
Crisisx1 said:
If you're on contract with t mobile and your account is in good standing with them. Call them tell them you're going over seas and need to unlock your phone so you can use it. They will send you unlock code ... then pop in an att sim card and it will prompt you to enter the unlock code t Mobil gave you. Done
Sent from my SGH-T999 using xda premium
Click to expand...
Click to collapse
OK thank you. I followed your instructions and they said it would take up to maybe 24 hrs for the phone to be unlocked. If it isn't unlocked than she said to call back with the conformation number she gave me. If that doesn't work than they would have to give Samsung my info and could take up to 14 days. She said when you buy phones almost all stands and corp stores have already unlocked phones.
she also said it would be auto unlocked for good. Can they lock the phone back up once it is be unlocked?
~Aqua
edited: Once I have it unlocked ( if all goes good ) do i use the same APN settings that I needed to put into the phone in order for my phone to work on the AT&T network as I did with my S2 that I got unlocked ?

Don't they use different frequencies for HSPA+
You would be relegated to edge speeds, correct me if I'm wrong

speed issue
five40 said:
Don't they use different frequencies for HSPA+
You would be relegated to edge speeds, correct me if I'm wrong
Click to expand...
Click to collapse
I really don't know. That would be a great question if someone would be nice enough to help me with this information? Again i have a T mobile S3 hopefully its unlocked would I be losing speeds by being on the AT&T network?
thanks
~Aqua

AquaWater said:
I really don't know. That would be a great question if someone would be nice enough to help me with this information? Again i have a T mobile S3 hopefully its unlocked would I be losing speeds by being on the AT&T network?
thanks
~Aqua
Click to expand...
Click to collapse
The T-Mobile S3 has the 850/1900 3G bands so it will work on AT&T's 3G network. It will not get LTE though.
You can unlock either by paying for a code from the various resellers online or requesting an unlock code from T-Mobile if you have an account in good standing with them. If you can't get the code from T-Mobile I suggest searching 'T999 unlock' on eBay and you'll find some good options.

The tmobile galaxy s3 will work on the ATnT HSPA+21 frequency. Same frequency the International version runs on for that network.
Sent from my SGH-T999 using xda app-developers app

Edge network and 3/4G Question
I found an excellent place so far on eBay for buying unlock codes. they have almost 3800 sells with a 99% positive feedback. Great customer service. The guy answered numerous questions of mine and made sure i did everything correctly. Payment was $24.95 US, so hopefullly everything will go good.
He was talking about being on something called an " Edge " network which is a little slower, but he said you won't notice a difference between your unlocked S2 and the unlocked S3 now. Right now my S2 says I have 3G service when I use it. I dont understand how i had a inspire4G, what is the 4G for if AT&T only gives you 3G service? And where I am in United States I should have 4G service no matter what. I'm confused on that.,

AquaWater said:
I found an excellent place so far on eBay for buying unlock codes. they have almost 3800 sells with a 99% positive feedback. Great customer service. The guy answered numerous questions of mine and made sure i did everything correctly. Payment was $24.95 US, so hopefullly everything will go good.
He was talking about being on something called an " Edge " network which is a little slower, but he said you won't notice a difference between your unlocked S2 and the unlocked S3 now. Right now my S2 says I have 3G service when I use it. I dont understand how i had a inspire4G, what is the 4G for if AT&T only gives you 3G service? And where I am in United States I should have 4G service no matter what. I'm confused on that.,
Click to expand...
Click to collapse
Edge is 2G speeds, which are substantially slower than 3G speeds. IMHO, 3G speeds are livable, 2G/Edge is not.
Different phones have different radios which work on different frequencies. Some phones are not compatible with other services at all, and some will work on other carriers but often not at optimal speeds.

Darmokk said:
Edge is 2G speeds, which are substantially slower than 3G speeds. IMHO, 3G speeds are livable, 2G/Edge is not.
Different phones have different radios which work on different frequencies. Some phones are not compatible with other services at all, and some will work on other carriers but often not at optimal speeds.
Click to expand...
Click to collapse
So than why would someone suggest that I would get "edge" instead of what i have now? I'm getting 3G now with my T-Mobile S2 unlocked on AT&T, but now I'm going to have an unlocked S3, why wouldn't it be the same?

Because the radios in the devices are different.
Sent from my SGH-T999 using xda app-developers app

So than why would someone suggest that I would get "edge" instead of what i have now?
Click to expand...
Click to collapse
Because he/she doesn't know what he/she is talking about. You will be fine with a T-Mobile S3 on AT&T.

That's what I said earlier in not so many words.
Voice willl work fine you will not see HSPA+ speeds on At&t with a T-Mobile Galaxy SIII.
If the T-Mobile SIII has the hardware capability to support the At&t HSPA+ bands you would need modified radio software to unlock this ability.
I believe this was done on the Galaxy Note to tun on T-Mobile HSPA+ network before it was officially launched on T-Mobile.
kmdub I believe your the one that's wrong.

five40 said:
That's what I said earlier in not so many words.
Voice willl work fine you will not see HSPA+ speeds on At&t with a T-Mobile Galaxy SIII.
If the T-Mobile SIII has the hardware capability to support the At&t HSPA+ bands you would need modified radio software to unlock this ability.
I believe this was done on the Galaxy Note to tun on T-Mobile HSPA+ network before it was officially launched on T-Mobile.
kmdub I believe your the one that's wrong.
Click to expand...
Click to collapse
I unlocked my t999 and am using an att straight talk sim getting HSPA speeds. Going to switch back to tmobile prepay because it is way faster than att HSPA with better latency. Although coverage may be lacking, i may just switch to an att ST sim.
To answer your question, a Tmobile S3 will work on ATT HSPA+ network with the HSPA+ Speeds of up to 6-7mbps in NYC area. The average I've been getting is around 2-3.5 mbps. With the tmobile prepay sim I have, it's usually around 2-18mbps down in NYC area.
The T-mobile S3 will not work on the ATT LTE network because it lacks that radio (or so they say for now); there have been other threads suspecting it's just a matter of flashing the right radio to "turn on" the ATT LTE radio. However, if all you want is HSPA+ speeds, rest assured it will work fine.
The ATT S3 is lacking the AWS bands for TMobile so it will not get the HSPA+ on Tmobile.
Best regards.

radio issue
First off, I would like to thank everyone who has been helping me along with my issues with my phone. I appreciate it a lot and I'm picking up more knowledge more and more everyday from you guys and reading heavily on the forums.
if the hardware in the phone doesn't support HSPA+ 1) will i have to root the phone and 2) change the radio? And 3 ) if I change the radio does that mean I would need to install a custom ROM i order for it to work properly?
Also, from one of the post they said "The T-Mobile S3 has the 850/1900 3G bands " - of that is true will than I should be able to have the 3G speeds correct?
I really hope I am not making some people angry, I'm new to this and trying my hardest to understand everything so I don't make mistakes. Please bare with me. Again, thank you so much everyone who has contributed so far. I still have a lot to learn. The reason why is because I just don't want it to work ( I do, want it to work ) but I want to understand why everything is working they way it is and I've over the past almost month have been picking up a lot of knowledge. Can't wait to hear from you guys

kmdub I believe your the one that's wrong.
Click to expand...
Click to collapse
No, actually, you are wrong. The T-Mobile S3 does not need any modification to work properly on AT&T's HSPA network. Seems you are confusing something else with frequency. Quit spreading bad information.
OP: Don't worry about it. Some are making this way more complicated than it needs to be. As said before, if you have the T999, you will be fine on AT&T's HSPA network without any modifications (other than an account...lol). Just get the phone SIM-unlocked, pop in the right SIM, you are good to go. Seriously, it is that easy.

Well there it is, I stand corrected!
I had no idea the T-Mobile SIII supports At&t HSPA+ bands.
Is the same true to all T-Mobile HSPA+ phones?

Sorry for any issues, just learning
Hi everyone,
thanks so much for the info. Will the S2 I needed to put in certain APN settings inorder to receive MMS ( picture ) via texts. Do i use the same settings for the Samsung Galaxy 3?

kmdub said:
No, actually, you are wrong. The T-Mobile S3 does not need any modification to work properly on AT&T's HSPA network. Seems you are confusing something else with frequency. Quit spreading bad information.
OP: Don't worry about it. Some are making this way more complicated than it needs to be. As said before, if you have the T999, you will be fine on AT&T's HSPA network without any modifications (other than an account...lol). Just get the phone SIM-unlocked, pop in the right SIM, you are good to go. Seriously, it is that easy.
Click to expand...
Click to collapse
I too have learned from this thread

GSM on DINC2 will not work without "2G only checked"

Hello everyone,
I have been stuck with this problem for days now with no more thoughts on how to fix it:
I have an unlocked, rooted DINC2 that I am trying to use with T-Mobile prepaid. I am currently running {10-25-2012}{Rom}{ICS} Official Global CM9 from Psycho R' Us. I can send/receive phone calls fine, however unless "2G only" is checked in the settings (EDGE), I can't get data working at all and it just shows all the bars grey. I believe my APN settings are correct... if anyone has any suggestions on how to fix this please let me know .
Thanks!

mastermind85 said:
Hello everyone,
I have been stuck with this problem for days now with no more thoughts on how to fix it:
I have an unlocked, rooted DINC2 that I am trying to use with T-Mobile prepaid. I am currently running {10-25-2012}{Rom}{ICS} Official Global CM9 from Psycho R' Us. I can send/receive phone calls fine, however unless "2G only" is checked in the settings (EDGE), I can't get data working at all and it just shows all the bars grey. I believe my APN settings are correct... if anyone has any suggestions on how to fix this please let me know .
Thanks!
Click to expand...
Click to collapse
Okay... weird now it works on EDGE:2, but it should be on HSPA+ since its been reported to be active in the NoVA area near me. Is there a way to get it on that network?
Thanks again!

mastermind85 said:
Okay... weird now it works on EDGE:2, but it should be on HSPA+ since its been reported to be active in the NoVA area near me. Is there a way to get it on that network?
Thanks again!
Click to expand...
Click to collapse
This phone doesn't support all gsm bands, so I doubt it will hit HSPA+. I don't know for sure, but you'd have to research what bands the phone supports vs. what bands T-mobile uses.

gtdtm said:
This phone doesn't support all gsm bands, so I doubt it will hit HSPA+. I don't know for sure, but you'd have to research what bands the phone supports vs. what bands T-mobile uses.
Click to expand...
Click to collapse
T-Mobile uses Frequency 1900 for their new HSPA+ service, and the Droid Incredible 2 supports GSM frequency 1900, so shouldn't it work?

mastermind85 said:
T-Mobile uses Frequency 1900 for their new HSPA+ service, and the Droid Incredible 2 supports GSM frequency 1900, so shouldn't it work?
Click to expand...
Click to collapse
Anyone have any other suggestions? :\

mastermind85 said:
T-Mobile uses Frequency 1900 for their new HSPA+ service, and the Droid Incredible 2 supports GSM frequency 1900, so shouldn't it work?
Click to expand...
Click to collapse
That's what I thought when I let a buddy use his Dinc2 to pay down some cash he owed me (his sociopath 20-something kid snaked two $100-bills outta my wallet...sigh)...but I seem to remember reading a thread that it won't work.
I honestly haven't spent much time on this after my initial searches since my main use is as a GPS logger, mp3 and audible player though I am prolly going to grab a ST or or GSM card to reduce device clutter...so while I haven't anything useful to contrib here I will follow and post any relevent links I stumble across tonight (working midnight shift so not a ton to do other than not fall asleep.

brecklundin said:
That's what I thought when I let a buddy use his Dinc2 to pay down some cash he owed me (his sociopath 20-something kid snaked two $100-bills outta my wallet...sigh)...but I seem to remember reading a thread that it won't work.
I honestly haven't spent much time on this after my initial searches since my main use is as a GPS logger, mp3 and audible player though I am prolly going to grab a ST or or GSM card to reduce device clutter...so while I haven't anything useful to contrib here I will follow and post any relevent links I stumble across tonight (working midnight shift so not a ton to do other than not fall asleep.
Click to expand...
Click to collapse
Thanks! find anything? I still cant figure this thing out...

[Q] Sony Xperia ZL 6506 locked from At&t? Is that possible

Dear all,
I just bought a Sony Xperia ZL 6506 white on ebay. It is new. I think it was a good deal since it was 455 shipping included. the guy states in the ad that the phone is brand new. I have T-mobile, and I am concerned of only one thing: the seller wrote "At&t" under the voice "carrier" and states: "PHONE WORKS WITH AT&T. NOT SURE IF IT IS UNLOCKED TO OTHER GSM NETWORKS." I googled and I think there is no such an Sony Xperia ZL 6506 locked to Att, or am I missing something? Should it work with my Tmobile sim card?Thanks
It is listed here: http://www.ebay.com/itm/Sony-Xperia...D&orig_cvip=true&rt=nc&_trksid=p2047675.l2557

You'll be fine - the C6506 is unlocked for any GSM carrier. It is the reason I just purchased one yesterday as well: because it has the 1700mhz T-mobile AWS band (unlike the HTC One Developer Edition that I'm now selling).
It will not be locked to AT&T. Now, the T-mobile version of the Xperia Z is another story and it will be locked to T-mobile, but you'll be fine.
Enjoy your phone! Setting mine up now and I just love it so far.
-Collin-

Awesome I hope so. I bought it because it is pentaband. It has the H+ network also on the 900 Mhz frequenzy!! So I am gonna use it in Italy (im italian working in USA) as well if my studies were corrects. Do you agree? And you are gonna travel to Europe sometimes rite?

venexiano said:
Awesome I hope so. I bought it because it is pentaband. It has the H+ network also on the 900 Mhz frequenzy!! So I am gonna use it in Italy (im italian working in USA) as well if my studies were corrects. Do you agree? And you are gonna travel to Europe sometimes rite?
Click to expand...
Click to collapse
I actually just came home from Italy on my honeymoon! I didn't have the phone at that time, but I did have the Nexus 4 and it worked beautifully. Too bad I dropped it on the cement after a few too many beers at the beer garden in Prague
Cheers,
-Collin-

Congrats for ur wedding! I bet u were in my hometown (Venezia, Venexiano means inhabitant of Venice in venetian dialect).
Anyway yeah I wanted to buy the Nexus 4, way cheaper...but I wanted to have the option to use a SD card...
May I ask you way you ditched the Nexus 4 for the Xperia ZL? Was Praga's cement too hard and it could not make it?
Cheers

venexiano said:
Congrats for ur wedding! I bet u were in my hometown (Venezia, Venexiano means inhabitant of Venice in venetian dialect).
Anyway yeah I wanted to buy the Nexus 4, way cheaper...but I wanted to have the option to use a SD card...
May I ask you way you ditched the Nexus 4 for the Xperia ZL? Was Praga's cement too hard and it could not make it?
Cheers
Click to expand...
Click to collapse
Well, I was using the Nexus 4 on AT&T in the US at that time, and AT&T's 3G network is fairly slow here. It was time to get a phone with LTE, so I got the HTC One. Now, I switched to T-Mobile and they just turned on the LTE service in my area (San Jose, CA) and I needed the pentaband phone. I didn't want to buy a phone from T-Mobile because I prefer to buy unlocked versions and I really liked the Sony. It's so compact for a 5" screen.
Yes, we went to Venezia. It was so beautiful! One of our fondest memories was traveling out to Burano and Murano islands. True paradise.
Cheers,
-Collin-

Cool my mom was born and raise in Murano. I go often there with my boat.
Anyways...did u really notice a big difference between Tmobile H+ and Tmobile LTE?
thanks
A.

T-Mobile has LTE deployed in Chicago. I'm getting roughly the same speeds as HSPA+ most of the time. The only difference is the latency and some peak speeds. I've seen almost 30Mbps on LTE in some areas. Honestly, I turn my LTE off most of the time because I've been using up my bandwidth way too quickly.
Sent from my C6506 using xda app-developers app

needmoregigs said:
T-Mobile has LTE deployed in Chicago. I'm getting roughly the same speeds as HSPA+ most of the time. The only difference is the latency and some peak speeds. I've seen almost 30Mbps on LTE in some areas. Honestly, I turn my LTE off most of the time because I've been using up my bandwidth way too quickly.
Sent from my C6506 using xda app-developers app
Click to expand...
Click to collapse
I get about 10-12mbps on HSPA+ and usually 25-30mbps on LTE here in San Jose. 10-12 is just fine for me, but I just got one of the new unlimited plans so I see no real drawback. Uploads are WAY faster though, and that helps with my "auto-upload" feature I use when I snap photos I guess. You know, and pictures of my food being posted on Facebook and whatnot
-Collin-

venexiano said:
Dear all,
I just bought a Sony Xperia ZL 6506 white on ebay. It is new. I think it was a good deal since it was 455 shipping included. the guy states in the ad that the phone is brand new. I have T-mobile, and I am concerned of only one thing: the seller wrote "At&t" under the voice "carrier" and states: "PHONE WORKS WITH AT&T. NOT SURE IF IT IS UNLOCKED TO OTHER GSM NETWORKS." I googled and I think there is no such an Sony Xperia ZL 6506 locked to Att, or am I missing something? Should it work with my Tmobile sim card?Thanks
snip...
Click to expand...
Click to collapse
I just SWITCHED to AT&T and get only HSPA/HSPA+. No LTE service at all. Is there something new subscribers need to do? I've only seen existing AT&T subscribers having success with the ZL.
Suggestions? Thanks

Solution to Xperia ZL and no LTE Service
pete4abw said:
I just SWITCHED to AT&T and get only HSPA/HSPA+. No LTE service at all. Is there something new subscribers need to do? I've only seen existing AT&T subscribers having success with the ZL.
Suggestions? Thanks
Click to expand...
Click to collapse
I solved the issue.
First the problem: If you are a new customer bringing an unlocked phone (not AT&T branded), when you register your IMEI, the network will not recognize it as AT&T property and will deny you LTE service.
Solution: Finally, after a week, today I went to the local store, and they put the IMEI of a store phone in and voila, LTE right away. Obviously, this should not be the case, and those who get service right away must be existing AT&T customers with an AT&T phone in their account. This must change otherwise people won't want to switch! HTH