If you guys have the Amaze and tired of tmobiles BS 5GB throttling cap then you can switch to simplemobile they use tmobile's network.
Make sure you get their $60 / month unlimited talk text and 4g plan because their 3g plan sucks and throttles you at 120 kbps, but the 4g has no throttling and i topped out at 25 mbps on the speed test on the hspa+ 42 network.
celltimemb said:
If you guys have the Amaze and tired of tmobiles BS 5GB throttling cap then you can switch to simplemobile they use tmobile's network.
Make sure you get their $60 / month unlimited talk text and 4g plan because their 3g plan sucks and throttles you at 120 kbps, but the 4g has no throttling and i topped out at 25 mbps on the speed test on the hspa+ 42 network.
Click to expand...
Click to collapse
Wow... You kicked my butt
I was just beating my chest about consistent 10-14mb
Nice
Sent from my HTC_Amaze_4G using XDA App
O no, not simple mobile. *cuts wrists*
Perhaps we can use the Simple apn?
Binary100100 said:
Perhaps we can use the Simple apn?
Click to expand...
Click to collapse
It shouldn't work
the APN is simple if you wanna play around with it.
Is it possible to use a Simple Mobile SIM in the Amaze without unlocking it?
Anyone tried using the Simple Mobile APN setting on T-mobile HTC Amaze? If yes, does the throttling cap still works?
Also, What value string is used for MMSC parameter in the APN setting?
Apt2l said:
Anyone tried using the Simple Mobile APN setting on T-mobile HTC Amaze? If yes, does the throttling cap still works?
Also, What value string is used for MMSC parameter in the APN setting?
Click to expand...
Click to collapse
Would really appreciate some input on this?
Thanks!
http://mms.msg.eng.t-mobile.com/mms/wapenc
This is the answer to the question above.
(MMSC APN)
Happy Holidays
Definitely NOT being sent from my HTC Amaze4G until Christmas Day.....Okay it is
Babydoll25 said:
http://mms.msg.eng.t-mobile.com/mms/wapenc
This is the answer to the question above.
(MMSC APN)
Happy Holidays
Definitely NOT being sent from my HTC Amaze4G until Christmas Day.....Okay it is
Click to expand...
Click to collapse
Thank you Babydoll25!!
Anyone on the first question???
Kavik said:
Is it possible to use a Simple Mobile SIM in the Amaze without unlocking it?
Click to expand...
Click to collapse
It should be possible since Simple is an MVNO (mobile virtual network provider) of T-Mobile. However, since I don't have a Simple Mobile SIM to check with, I can't be a hundred percent sure. Sorry.
Definitely NOT being sent from my HTC Amaze4G until Christmas Day.....Okay it is
Babydoll25 said:
It should be possible since Simple is an MVNO (mobile virtual network provider) of T-Mobile. However, since I don't have a Simple Mobile SIM to check with, I can't be a hundred percent sure. Sorry.
Definitely NOT being sent from my HTC Amaze4G until Christmas Day.....Okay it is
Click to expand...
Click to collapse
Not sure if you were actually trying to answer that question but I was talking about this first question:
"Anyone tried using the Simple Mobile APN setting on T-mobile HTC Amaze? If yes, does the throttling cap still works?"
Thanks again for taking the time.
cool thanks!
Apt2l said:
Not sure if you were actually trying to answer that question but I was talking about this first question:
"Anyone tried using the Simple Mobile APN setting on T-mobile HTC Amaze? If yes, does the throttling cap still works?"
Thanks again for taking the time.
Click to expand...
Click to collapse
No, I WAS answering the question whether a Simple Mobile SIM would work in a T-Mobile locked Amaze. You will have to find out for yourself if your usage while connected to Simple counts against your data cap.
Sent....from the desk of Pipsqueak O.
Related
I just bought the prepaid 4G prepaid plan using my atrix and I'm only getting 2G speed. I read that it has to do with the frequency. I can't afford to buy a new phone, so I'm hoping to be able to change the phone frequency or hear any other solution that someone has already tried to get 4G speed. Thanks!
Sent from my MB860 using XDA App
Hey, sorry I dont have a solution to your question but a question myself lol. I'm looking to switch to t-mobile pre-paid or month to month also. What all did you have to do to make the switch? Pretty simple?
someone already asked about using their atrix on the T-Mobile network.
search for it. I'm sure you'll find the answer with about 15 or less of search time.
----
and I found it already. took me like 5-7 minutes. and it's only because I read a few different threads as well.
so yeah. search. quite easily found.
Frequency=radio=hardware
Get to soldering and hacking drivers if you want to change the freq.
Sent from my MB860 using xda premium
Sackgi said:
I just bought the prepaid 4G prepaid plan using my atrix and I'm only getting 2G speed. I read that it has to do with the frequency. I can't afford to buy a new phone, so I'm hoping to be able to change the phone frequency or hear any other solution that someone has already tried to get 4G speed. Thanks!
Sent from my MB860 using XDA App
Click to expand...
Click to collapse
Its impossible to change the frequency of a device. There's a reason these things have to go through the FCC before they hit the market. Enjoy your EDGE. I recommend checking out Opera Mini, if you can live with some weird looking pages it'll speed up your web browsing quite a bit.
Not possible by software. Sorry.
Sackgi said:
I just bought the prepaid 4G prepaid plan using my atrix and I'm only getting 2G speed. I read that it has to do with the frequency. I can't afford to buy a new phone, so I'm hoping to be able to change the phone frequency or hear any other solution that someone has already tried to get 4G speed. Thanks!
Sent from my MB860 using XDA App
Click to expand...
Click to collapse
mykull said:
Hey, sorry I dont have a solution to your question but a question myself lol. I'm looking to switch to t-mobile pre-paid or month to month also. What all did you have to do to make the switch? Pretty simple?
Click to expand...
Click to collapse
Would anything change since at&t just bought t-mobile?
cheezycheeto said:
Would anything change since at&t just bought t-mobile?
Click to expand...
Click to collapse
No. And AT&T did not buy Tmo...
Is it true that I can put a at&t sim card in my t-mobile amaze and get 3 and 4 g coverage?Does this phone have LTE bands in it?and I was told thY the white amaze is better than the black one why?
Sent from my HTC Sensation 4G using XDA
Mesaman2012 said:
Is it true that I can put a at&t sim card in my t-mobile amaze and get 3 and 4 g coverage?Does this phone have LTE bands in it?and I was told thY the white amaze is better than the black one why?
Sent from my HTC Sensation 4G using XDA
Click to expand...
Click to collapse
Both white and black are the same, yes you will get 3G and 4G coverage on at&t since 4G is hspa and at&t supports hspa.
No this phone doesn't have lte and just a heads up, though you will get 4G, it might not be as fast t-mobile from what I've heard, their HSPA isn't that fast but still pretty decent.
I appreciate that.
Sent from my HTC Sensation 4G using XDA
Is this phone pentaband? If it is specific for TMO bands only, you will only get edge on AT&T as I understand it......
gagb1967 said:
Is this phone pentaband? If it is specific for TMO bands only, you will only get edge on AT&T as I understand it......
Click to expand...
Click to collapse
It has the 1900 band, at&t's HSPA network runs on that band.
What about 3g?
Sent from my HTC_Amaze_4G using XDA
gagb1967 said:
What about 3g?
Sent from my HTC_Amaze_4G using XDA
Click to expand...
Click to collapse
HSPA is 3G, HSPA+ is 4G, the iPhone has both HSPA and HSPA+, which works on the iPhone's 1900 band, get where I'm going with this?
I'm using my Amaze on at&t through straight talk and it's 4g.
Sent from HTC Chicken Eater 4G.
Using my amaze on straight talk at&t towers, works great with 3g/4g.
Sent from my HTC_Amaze_4G using XDA
redeyss said:
Using my amaze on straight talk at&t towers, works great with 3g/4g.
Sent from my HTC_Amaze_4G using XDA
Click to expand...
Click to collapse
Can you post some screenshots of your speed tests? I didn't think straight talk supported 4G.
Dark Ellipse said:
Can you post some screenshots of your speed tests? I didn't think straight talk supported 4G.
Click to expand...
Click to collapse
Two people made this claim, doubt they would both be lying.
Dark Ellipse said:
Can you post some screenshots of your speed tests? I didn't think straight talk supported 4G.
Click to expand...
Click to collapse
ST does support 4G but right now my tower is under a full noon load.
12 noon speed is awful but 12 midnight speed is great.
At&t doesn't keep up on maintenance with these towers.
Are you forced into an at&t data plan?
jtevis said:
Are you forced into an at&t data plan?
Click to expand...
Click to collapse
Don't think they can force you into one if you bring your own device.
Dark Nightmare said:
Don't think they can force you into one if you bring your own device.
Click to expand...
Click to collapse
bingo
Dark Nightmare said:
Don't think they can force you into one if you bring your own device.
Click to expand...
Click to collapse
I used to work for Business End User Care for AT&T. As of the time I left (november), if you placed your sim in a smartphone and used it for about a day the system would add the lowest data plan and send you a text message indicating it had been added to your account. Even if you were using someone's phone while your "feature phone" wad being replaced, it was required. I've had to read that section of the TOS to many, many angry people. I would call and confirm just to be safe.
Sent from my HTC_Amaze_4G using xda premium
Biohazard0289 said:
I used to work for Business End User Care for AT&T. As of the time I left (november), if you placed your sim in a smartphone and used it for about a day the system would add the lowest data plan and send you a text message indicating it had been added to your account. Even if you were using someone's phone while your "feature phone" wad being replaced, it was required. I've had to read that section of the TOS to many, many angry people. I would call and confirm just to be safe.
Sent from my HTC_Amaze_4G using xda premium
Click to expand...
Click to collapse
I didnt know that, wow ATT sucks
That's hot I didn't now we could do all these things to a device. I had idea until my friend mentioned it sweet.
Biohazard0289 said:
I used to work for Business End User Care for AT&T. As of the time I left (november), if you placed your sim in a smartphone and used it for about a day the system would add the lowest data plan and send you a text message indicating it had been added to your account. Even if you were using someone's phone while your "feature phone" wad being replaced, it was required. I've had to read that section of the TOS to many, many angry people. I would call and confirm just to be safe.
Sent from my HTC_Amaze_4G using xda premium
Click to expand...
Click to collapse
DO NOT CALL to ask..... as they won't know the answer, and might put a note on your account to force a data plan(well, you could call and ask on someone else's phone without giving your account number)
the primary way (so far that I've seen) that AT&T detects your smartphone is via IMEI. Secondary might be you using >100GB/month, connecting to their 4G APN settings, going to a store for help and letting the customer rep see that you have a smartphone
does AT&T have your IMEI? probably not.... AT&T has IMEI of all of their smartphones, so you can't use an AT&T smartphone. You can try using an (unlocked) t-mobile phone, but might not support the right 3G/4G bands that AT&T use. You can try international phones, canda phones(from Bell, Telus...). WARNING>>>. AT&T might have your IMEI because the manufacture gave them the IMEI(See Google Nexus phones), inference from branded phones that they carry(eg Phone is sold/branded by AT&T and t-mobile... AT&T gets a list of their phone IMEIs that might include t-mobile's IMEIs), screwups(Samsung Note overseas was misentered as a tablet on AT&T's network, white i9100 Galaxy SII is misentered as a Blackberry on AT&T's network)
The link at the end of this post gives a guide to what phones are 100% compatible(3G/4G on 850/1900) on AT&T's network.
According to this, the T-Mobile Amaze 4G is compatible with AT&T 3G/4G, but I have some confusion on the 850/1900 mhz band for the 3G/4G data, trying to sort it out(last few posts on that thread)
Guide to what phones are 100% compatible with AT&T's network
anyways, quick update
got a T-mobile Amaze 4G to play with
(with unlocked bootloader, S-Off, Super CID and SIM unlock, all available on this forum), works on AT&T 4G (HSDPA)
speeds right now ~ 1000 kbits/s up/down, hard to test because my location is spotty
I purchased an S 2 from AT&T a while back. I have sense let my plan run out and now bought a prepaid SIM card. the problem is is that now my data does not work because of the 4 G AT&T does not offer 4 G with a prepaid. there is hardly any 4 G coverage where I'm from anyways but I would at least like the 3G to work. is there a way that I can get it to work like flashing ROM or something. I'm not a total noob to this stuff I just hang out at android Forums because of my zte. thank you very much for any of your help.
jdremler said:
I purchased an S 2 from AT&T a while back. I have sense let my plan run out and now bought a prepaid SIM card. the problem is is that now my data does not work because of the 4 G AT&T does not offer 4 G with a prepaid. there is hardly any 4 G coverage where I'm from anyways but I would at least like the 3G to work. is there a way that I can get it to work like flashing ROM or something. I'm not a total noob to this stuff I just hang out at android Forums because of my zte. thank you very much for any of your help.
Click to expand...
Click to collapse
If your SIM card doesnt allow it, then its not gonna be possible. No S/W can change that.
But if your SIM does allow 3g, then odds are you need proper APN settings. Google it if thats the case.
MotoMudder77 said:
If your SIM card doesnt allow it, then its not gonna be possible. No S/W can change that.
But if your SIM does allow 3g, then odds are you need proper APN settings. Google it if thats the case.
Click to expand...
Click to collapse
I would think that it would the 50 dollar monthly unlimited plan. from everything that I've read thus far I've got it narrowed down to something with the phone. I read about the apn settings once before and thought that that was it so I will definitely read more and do what needs to be done.thanks
jdremler said:
I purchased an S 2 from AT&T a while back. I have sense let my plan run out and now bought a prepaid SIM card. the problem is is that now my data does not work because of the 4 G AT&T does not offer 4 G with a prepaid. there is hardly any 4 G coverage where I'm from anyways but I would at least like the 3G to work. is there a way that I can get it to work like flashing ROM or something. I'm not a total noob to this stuff I just hang out at android Forums because of my zte. thank you very much for any of your help.
Click to expand...
Click to collapse
By any chance are you using Straight Talk? You were vague about which prepaid service.
Straight Talk is supposed to offer an AT&T compatible sim that actually works off the AT&T network.
Sent from my smooth as butter SGH-I777.
mattern1974 said:
By any chance are you using Straight Talk? You were vague about which prepaid service.
Straight Talk is supposed to offer an AT&T compatible sim that actually works off the AT&T network.
Sent from my smooth as butter SGH-I777.
Click to expand...
Click to collapse
True. But he'd still have to change his apn settings, the straight talk peepz give u the apns.
Sent from my SGH-I777 using Tapatalk 2
Phalanx7621 said:
True. But he'd still have to change his apn settings, the straight talk peepz give u the apns.
Sent from my SGH-I777 using Tapatalk 2
Click to expand...
Click to collapse
sorry about being so vague yes it is the AT&T prepaid service. I'm doing the apn settings as we speak so will see if they work.
I had the 50 dollar unlimited plan as well but it really is only for calling and texting. I still had to purchase a data plan and it was 25 dollars for one gig.After I got the data plan 4G started. You have to use the old cingular apn settings to get 4G but you cannot get 4G LTE on a prepaid plan. And just a heads up...when your prepaid needs to be renewed..4G data will shutdown for a few hours.
Sent from my SAMSUNG-SGH-I727 using xda app-developers app
EQ2192012 said:
I had the 50 dollar unlimited plan as well but it really is only for calling and texting. I still had to purchase a data plan and it was 25 dollars for one gig.After I got the data plan 4G started. You have to use the old cingular apn settings to get 4G but you cannot get 4G LTE on a prepaid plan. And just a heads up...when your prepaid needs to be renewed..4G data will shutdown for a few hours.
Sent from my SAMSUNG-SGH-I727 using xda app-developers app
Click to expand...
Click to collapse
Our phones cant use LTE.
Sent from my SGH-I777 using Tapatalk 2
Phalanx7621 said:
Our phones cant use LTE.
Sent from my SGH-I777 using Tapatalk 2
Click to expand...
Click to collapse
Check out his sig. His skyrocket can Phailanx.
Team Pirate
Sent from Pirateghost's house
brandonarev said:
Check out his sig. His skyrocket can Phailanx.
Team Pirate
Sent from Pirateghost's house
Click to expand...
Click to collapse
Yeah I know,and I saw he has one hehe. Just thought I'd chime in to let the OP know so he didn't go asking about it
Sent from my SGH-I777 using Tapatalk 2
I've used CDMA Workshop to update my PRL using all the different PRLs posted on this site, from 00001 - 56xxx. I seemed to get the best results with 11119 last billing cycle. I roamed over 31GB but no letter from Sprint. So I was going to continue to take advantage of the speeds until they warn me.
However, when I tried yesterday, I get very slow speeds with all the PRLs and my Sprint data usage page always shows Sprint 3g & Sprint 4g numbers increasing, but not Sprint 3g roaming usage. What's weird is the phone NEVER connects to LTE service so how is my 4g usage amount increasing? I know some of the PRLs listed would not show the roaming indicator although I was indeed roaming. But the Sprint usage page only shows Sprint usage increasing.
Anyways, when I flash 11119 or any other PRL from the XDA site, do I also need to set the Roam Only option in Settings -> Mobile Data -> Roaming (MeanBean ROM & I'm not opposed to switching ROMs if that's the issue)? My current Sprint PRL via Update PRL is 24012. Should I just keep the Sprint PRL and set the Roam Only option for Mobile Data? I tried it briefly and it switches my connection to 1x. Will 1x still count as 3G roaming? It's slow as heck so I can't imagine 1x data usage pushing my usage numbers up very high.
Only my 2nd post so forgive me if I posted in the wrong area, asked stupid questions, etc. Blast me and I'll get it all right the next time ... I promise!!
Need to flash an alternate prl and go to roam only mode. Orelse you'll still be on sprint towers.
Sent from my EVO using xda app-developers app
joefx13 said:
Need to flash an alternate prl and go to roam only mode. Orelse you'll still be on sprint towers.
Sent from my EVO using xda app-developers app
Click to expand...
Click to collapse
This has worked beautifully!! Over 100GB so far and the 3g speed is bearable. Still no letters from Sprint so maybe my account gets a pass.
Thanks for the reply!
listsubscriber said:
This has worked beautifully!! Over 100GB so far and the 3g speed is bearable. Still no letters from Sprint so maybe my account gets a pass.
Thanks for the reply!
Click to expand...
Click to collapse
How about you just pay the ETF and go to a carrier that better suits your needs?
leerage said:
How about you just pay the ETF and go to a carrier that better suits your needs?
Click to expand...
Click to collapse
Mayb cause sprint is cheaper? Cept tmo i suppose
Technically Sprint CAN charge .25$ per megabyte over 300mb usage of off-network roaming, by the way That would be quite the bill you'd have there. Sprint is tricky and unpredictable in most cases. I'd be careful. Just my .25$. Lol.
Delakit said:
Technically Sprint CAN charge .25$ per megabyte over 300mb usage of off-network roaming, by the way That would be quite the bill you'd have there. Sprint is tricky and unpredictable in most cases. I'd be careful. Just my .25$. Lol.
Click to expand...
Click to collapse
I wish they would do this to these people racking up huge roaming bills. They are just ruining the roaming for others.
signal can't be that bad if your hitting 100gb.. it take me 3+ months to hit that with the signal I get.
ekz13 said:
signal can't be that bad if your hitting 100gb.. it take me 3+ months to hit that with the signal I get.
Click to expand...
Click to collapse
He's using Verizon signal (3g), sometimes I get up to 1.5 with their signal too
Sent from my EVO using xda premium
Be careful bro! Just figured you're bill of roaming. It totals to $25,600!!!
Sent from my EVO using Tapatalk 2
bennyboy78 said:
Be careful bro! Just figured you're bill of roaming. It totals to $25,600!!!
Sent from my EVO using Tapatalk 2
Click to expand...
Click to collapse
Exactly. It's a risky business. Cheaper to ETF and switch carriers for sure.
Sent from my EVO using xda app-developers app
carrilloevo said:
He's using Verizon signal (3g), sometimes I get up to 1.5 with their signal too
Sent from my EVO using xda premium
Click to expand...
Click to collapse
oh I understand that but 1.5gb isn't that much in the grand scheme, I would think most people here can hit that with or without a vzn prl, but its a far cry from 100gb
bennyboy78 said:
Be careful bro! Just figured you're bill of roaming. It totals to $25,600!!!
Sent from my EVO using Tapatalk 2
Click to expand...
Click to collapse
There may be a provision that Sprint *can* charge you extra for roaming, but I've never heard of it actually happening to anyone in practice. It seems to be standard procedure that they just drop you after a certain amount of time of excessive roaming, and they give you advance notice that you're being dropped. I've actually seen a copy of the letter they send. In my personal experience, I've never been charged extra for roaming despite routinely going over their 300mb cap.
Sent from my EVO using xda premium
I'm getting text, but no data otherwise it seems. Nothing in web browser, etc. I see a 4G logo. My network info says:
Operator Name: T-Mobile
Mobile Network Type: UMTS
Service state: In service
Is it the mobile network type that is wrong? How do I change it?
EDIT: Seems like maybe I have to set the APN? Are these correct? http://forum.xda-developers.com/showthread.php?t=2236735
Yes, when switching carriers you will need to manually add the APN if the SIM card didn't automatically do it for you.
I don't have T-Mobile, but that looks good to me.
Newcron said:
Yes, when switching carriers you will need to manually add the APN if the SIM card didn't automatically do it for you.
I don't have T-Mobile, but that looks good to me.
Click to expand...
Click to collapse
Thanks! Everything seems to be working swimmingly. Speedtest is even faster than on my Nexus 4 on T-Mobile, interesting!
slopokdave said:
Thanks! Everything seems to be working swimmingly. Speedtest is even faster than on my Nexus 4 on T-Mobile, interesting!
Click to expand...
Click to collapse
So are you on EDGE or HSPS+? If you're on HSPS+ what APN you entered?
I'm considering going on T Mobile with my AT&T One but when I insert my girlfriend SIM card it seems I'm always stuck on EDGE
Sent from my HTC One using xda premium
shook187 said:
So are you on EDGE or HSPS+? If you're on HSPS+ what APN you entered?
I'm considering going on T Mobile with my AT&T One but when I insert my girlfriend SIM card it seems I'm always stuck on EDGE
Sent from my HTC One using xda premium
Click to expand...
Click to collapse
He is likely in a T-Mobile refarmed area so 1900 MHz UMTS is available, while your area doesn't have this.
Go to http://airportal.de to get an (unofficial) view of where this is available.
shook187 said:
So are you on EDGE or HSPS+? If you're on HSPS+ what APN you entered?
I'm considering going on T Mobile with my AT&T One but when I insert my girlfriend SIM card it seems I'm always stuck on EDGE
Sent from my HTC One using xda premium
Click to expand...
Click to collapse
I'm on HSPA+. I was pulling 12 down on speedtest. The settings I used are in the first link of the OP. Very nice...
slopokdave said:
I'm on HSPA+. I was pulling 12 down on speedtest. The settings I used are in the first link of the OP. Very nice...
Click to expand...
Click to collapse
I've pulled 25 mbps on t mobile on my nexus 4. T mobile has fantastic hspa+ speeds in high signal areas.
Sent from my HTC One using Tapatalk 2
I'm not sure what happened, but now I can only get edge... all night. I've soft reset and still stuck on Edge. Perhaps I was picking up 1900 at work? Everywhere else is Edge. Ugh.
im on Brooklyn new York and i want to know if im gonna be able to use an at&t htc one on tmobile hspa+ network
slopokdave said:
I'm not sure what happened, but now I can only get edge... all night. I've soft reset and still stuck on Edge. Perhaps I was picking up 1900 at work? Everywhere else is Edge. Ugh.
Click to expand...
Click to collapse
Yeah, that's probably what happened. If you don't get it, then you don't. It does look like they keep adding new area though.
manaurys said:
im on Brooklyn new York and i want to know if im gonna be able to use an at&t htc one on tmobile hspa+ network
Click to expand...
Click to collapse
I have posted above a link for a map where you can get a feel of whether you have refarmed T-Mobile towers in your area.
manaurys said:
im on Brooklyn new York and i want to know if im gonna be able to use an at&t htc one on tmobile hspa+ network
Click to expand...
Click to collapse
I could almost guarantee you the answer is No
Sent from my HTC One using xda premium
shook187 said:
I could almost guarantee you the answer is No
Sent from my HTC One using xda premium
Click to expand...
Click to collapse
I hate this i got more than two people saying yes and two more people saying no has anyone that is saying something actually test it
Sent from my Nexus 4 using Tapatalk 2
manaurys said:
I hate this i got more than two people saying yes and two more people saying no has anyone that is saying something actually test it
Sent from my Nexus 4 using Tapatalk 2
Click to expand...
Click to collapse
What about calling T-Mobile and asking?
manaurys said:
I hate this i got more than two people saying yes and two more people saying no has anyone that is saying something actually test it
Sent from my Nexus 4 using Tapatalk 2
Click to expand...
Click to collapse
The final answer is yes. The AT&T HTC One and the international/developer edition are exactly the same. Both support the frequencies used by T-Mobile. However, if you're not in a refarmed area listed here, then you won't be getting HSPA+. You'll get calls, text, MMS, but restricted to 2G as far as data goes until your towers are refarmed.
There are alot of threads on this topic in this forum as well as on the international/developer forums supporting this.
I had been getting speeds well over 20mbps on my Nexus 4... cracked the screen this weekend and connected an unlocked HTC One, from AT&T. I'm getting 5mbps now. I changed the settings as the OP did.
I am wondering if the speed reduction is due to the new phone, or because I recently switched from a "Unlimited" (with 5gigs of unlimited data) contract plan to a truly unlimited month-to-month "uncarrier" plan.
I made the change on Monday or so of last week, and within 24-48 hours was having poor/limited reception in my home and nearby, in my town, which I previously NEVER had issues in.
@OP- How did you go about getting yours unlocked? I'm trying to unlock mine to make it more valuable on craigslist and AT&T said that someone will get back to me by the 9th, which won't work for me.