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Question to all my fellow droid 3 experts....

I'm about to go buy an droid 3 cause its slimmer wider and prob roots easyier than mt4gs now my question is mainly I want to unlock the GSM feature on to T-mobile and basically what I'm trying to achieve on this fone is to get 4g or at least get 3g working and get the phone rooted for custom roms so basically goal is 3g 4g custom rom.. thanks
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crimedave1987 said:
I'm about to go buy an droid 3 cause its slimmer wider and prob roots easyier than mt4gs now my question is mainly I want to unlock the GSM feature on to T-mobile and basically what I'm trying to achieve on this fone is to get 4g or at least get 3g working and get the phone rooted for custom roms so basically goal is 3g 4g custom rom.. thanks
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Can't use 3g on t-mobile. Their gsm bands are not compatible with the d3
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Not even a cdma reprogram?
Sent from my myTouch_4G_Slide using xda app-developers app

It has nothing to do with that. The radio itself does not support 1700 MHz. The only two non-T-Mobile phones that I know are compatible with T-Mobile 3G/4G out of the box are the Meizu MX and the Galaxy Nexus. And if you wanna count the AT&T Note in with the hacked radio (Note that the hardware actually already supports 1700 MHz).

Well that sucks i was getting excited and was getting ready to buy it
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crimedave1987 said:
Well that sucks i was getting excited and was getting ready to buy it
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If you wanna non-T-Mobile phones on T-Mobile, you're gonna have a tough time because very few places in the world use 1700 MHz. They use 850/1900 MHz (AT&T frequency). T-Mobile is moving to 1900 MHz, but that's gonna take a while. For now, if you wanna be able to use non-T-Mobile phones, you're gonna need a pentaband phone because 1700 MHz is an afterthought for most manufacturers.

Can't he flash the Chinese radio to make it work on T-Mobile? What about that thread in the dev section?
http://forum.xda-developers.com/showthread.php?t=1406812

redsox985 said:
Can't he flash the Chinese radio to make it work on T-Mobile? What about that thread in the dev section?
http://forum.xda-developers.com/showthread.php?t=1406812
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Click to collapse
It'll work but he will still have EDGE on T-Mobile because it's a different 3G frequency than the phone supports.

Oh well is there any phone similar to the droid 3 that's easy to unlock and root and support gsm?
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crimedave1987 said:
Oh well is there any phone similar to the droid 3 that's easy to unlock and root and support gsm?
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Wait for the Blaze 4G Q. It has a Snapdragon S4 processor and 720p screen:
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T-mobile 4g settings?

Hey Guys,
I have an unlocked lg optimus 2x. I have been using it with att 4g for the past year or so. I just switched to t-mobile prepaid, but I cannot get the 4g to work. I am always on 2G.
What gives? If there is anyone who has this working can you please let me know your baseband, RIL and APN settings? Not sure which will solve my problem

yathaid said:
Hey Guys,
I have an unlocked lg optimus 2x. I have been using it with att 4g for the past year or so. I just switched to t-mobile prepaid, but I cannot get the 4g to work. I am always on 2G.
What gives? If there is anyone who has this working can you please let me know your baseband, RIL and APN settings? Not sure which will solve my problem
Click to expand...
Click to collapse
If y our o2x is anything like mine, it probably doesn't have the right radio frequencies to use tmobile's "4g" (actually hspa+). I wrote about this before:
http://forum.xda-developers.com/showpost.php?p=26857353
And fwiw, mine is BB1120 with matching ril.
Edit: adding screenshot of my apn settings
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.

lg supports 4g? didnt know that.
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luka2858 said:
lg supports 4g? didnt know that.
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Yes, lg does. There is lg Optimus LTE.
But this lg Optimus 2x doesn't.
The t-mobile usa's 4G isn't a true 4G, as I mentioned above.

aragorn7 said:
Yes, lg does. There is lg Optimus LTE.
But this lg Optimus 2x doesn't.
The t-mobile usa's 4G isn't a true 4G, as I mentioned above.
Click to expand...
Click to collapse
Thanks for the explanation.
Sent from my LG-P990 using xda app-developers app

I can confirm that the O2X doesn't support the radio bands for T-Mobiles HSPA+ (which they dub 4G)
I had a flatrate during my vacation and had to deal with edge all the time ^^

Yup. The phone lacks 1700 frequency to work on T mobile "4G"
(cross-post from prev aforementioned post)
Source: http://explore.t-mobile.com/phone-sim-card
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Click to collapse
Sent from my LG-SU660 using xda premium

T-mobile 4g settings
aragorn7 said:
Yup. The phone lacks 1700 frequency to work on T mobile "4G"
(cross-post from prev aforementioned post)
Sent from my LG-SU660 using xda premium
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Ah son of a gun! I just got on a t-mobile prepaid monthly thing, well that's the end of that. I thought t-mobile had the G2X natively, so they would definitely support HSPA+ on their network. (An epic D'oh moment for me here )

In the usa 4g doesn't refer to the speed its referring to fourth generation wireless technology. Its confusing but as far as speed its more like 3.5g
Sent from my LG-P999 using xda premium

Can I use AT&T HTC ONE on Sprint?

This question is maybe dumb, but I heard the Sprint version of the device actually works great on AT&T, so, may I ask if it's possible make it happens vice-versa and how to do it if possible?

Sadly I don't think this is possible. I don't think the AT&T htc one has support for CDMA. While the sprint htc one works on AT&T it's not a perfect experience because the sprint htc is missing some frequencies that AT&T uses.
Sent from my iPad using Tapatalk

luigi311 said:
Sadly I don't think this is possible. I don't think the AT&T htc one has support for CDMA. While the sprint htc one works on AT&T it's not a perfect experience because the sprint htc is missing some frequencies that AT&T uses.
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ok then, well I will sell it tho lol!

You might want to wait for someone else to respond to this in case I'm wrong. It wouldn't be the first time lol.
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jonathanhtc said:
This question is maybe dumb, but I heard the Sprint version of the device actually works great on AT&T, so, may I ask if it's possible make it happens vice-versa and how to do it if possible?
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Click to collapse
http://forum.xda-developers.com/showthread.php?p=48867255
Good luck.
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JoeNeckbone said:
http://forum.xda-developers.com/showthread.php?p=48867255
Good luck.
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It's from Sprint... :-/

jonathanhtc said:
It's from Sprint... :-/
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Ah, not sure the other way around.
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By the looks of it the AT&T htc one has absolutely no CDMA radios
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Poor battery life after switching to T-Mobile?

What's up guys,
so I have a Motorola Moto Maxx XT1225 running 5.0.2 stock (rooted) and I'm currently getting about 3hs of screen on time.
I really don't know why or when this happened, but I used to get around 6~ average.
The only thing that changed is my carrier (I switched to T-Mobile). But still, I'm always with solid LTE signal / WiFi.
Ideas? Thanks

Bump. No ideas?
Sent from my XT1225 using Tapatalk

I'm guessing you're radio hopping. Verizon was probably more stable on the connection. (ie: finding 4g or 3g and staying there)
Try using a root based program to lock your phone in 3g or 4g.
Sent from my XT1254 using XDA Free mobile app

mrkhigh said:
I'm guessing your radio hopping. Verizon was probably more stable on the connection. (ie: finding 4g or 3g and staying there)
Try using a root based program to lock your phone in 3g or 4g.
Sent from my XT1254 using XDA Free mobile app
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Click to collapse
Hi! thanks for your help
I was actually using AT&T before T-Mobile.
Can you recommend a good app to do that? I am not sure if that's the problem because my phone is always with solid LTE signal.
I'm also thinking about installing a new rom. Maybe CM or Nexus Experience. Suggestions?
Thanks!!

I used an exposed module that had that in it. I think it was called APM+ maybe? It was a power menu that added flashlight/screencap/recovery/radio lock when you hit the power button.
Sorry I can't recommend a rom on this device I have a locked boot loader. But on all my other devices I've always liked cm the most.
Sent from my GT-P3110 using XDA Free mobile app

mrkhigh said:
I used an exposed module that had that in it. I think it was called APM+ maybe? It was a power menu that added flashlight/screencap/recovery/radio lock when you hit the power button.
Sorry I can't recommend a rom on this device I have a locked boot loader. But on all my other devices I've always liked cm the most.
Sent from my GT-P3110 using XDA Free mobile app
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Hey, found it. Thanks!
Will let you know
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Anyone have an idea how to fix this obvious APM+ is not working for radio lock, I am still having this issue

Have you gone to playstore and tried a wake lock detector? Or a battery statistics app? Do you keep GPS on? Perhaps your GPS radio is struggling.
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Actualy gps radio is off
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Mobile connection not working marshmallow

I've searched and can't find an answer.
I'm on a custom ROM 6.0.1_r3, I've flashed the 5.32 radio, the WiFi works fine but I'm getting no Mobile connection. The LTE icon indicates that it's getting a signal. I was having this problem with the previous radio, too.
Sent from my Nexus 6 using Tapatalk

fakecharles said:
I've searched and can't find an answer.
I'm on a custom ROM 6.0.1_r3, I've flashed the 5.32 radio, the WiFi works fine but I'm getting no Mobile connection. The LTE icon indicates that it's getting a signal. I was having this problem with the previous radio, too.
Sent from my Nexus 6 using Tapatalk
Click to expand...
Click to collapse
check to make sure that your APN is 100% accurate. one tiny mistake and it won't work.

Try setting to 3g, then back to LTE.
If that doesn't work, try toggling airplane mode.
If neither of those work, your APN is most likely not setup correctly.
Sent from my Nexus 6 using Tapatalk

I don't know where that is. In 5.0 it used to be under cellular settings, but not in marshmallow (not what I know what value to enter)
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Settings -> cellular network
Right above access point names
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Eun-Hjzjined said:
Settings -> cellular network
Right above access point names
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I don't have those options. I'm on resurrection remix. Do I need another ROM?
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fakecharles said:
I don't have those options. I'm on resurrection remix. Do I need another ROM?
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what network are you on??? you can try redownoading the ROM(gapps and SuperSU as well), then reflash them dirty, not wiping anything.

simms22 said:
what network are you on??? you can try redownoading the ROM(gapps and SuperSU as well), then reflash them dirty, not wiping anything.
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Sprint. I'll give that a shot, thanks
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fakecharles said:
Sprint. I'll give that a shot, thanks
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I don't know if sprint uses apns, as Verizon doesn't(another CDMA carrier).

So if Sprint doesn't use APNs, what's my next option?
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