Database Info

no dataconnection. what could it be? Help!

Maybe somebody here knows an answer.
my phone:
Nexus S
CM7
KB3
i cant get any gprs (dataconnection) with my simcard. apn settings are ok
if i use my old simcard of a different provider everything works fine
could the simcard be broken? any ideas? what else could be the problem?
thx c

Doppelgarage said:
Maybe somebody here knows an answer.
my phone:
Nexus S
CM7
KB3
i cant get any gprs (dataconnection) with my simcard. apn settings are ok
if i use my old simcard of a different provider everything works fine
could the simcard be broken? any ideas? what else could be the problem?
thx c
Click to expand...
Click to collapse
anyone!? i do feel i need to be prepared to go to my providers store..... If not i will have to go back to stock first.

Doppelgarage said:
anyone!? i do feel i need to be prepared to go to my providers store..... If not i will have to go back to stock first.
Click to expand...
Click to collapse
Who is your service provider? I had the same problem with Telus in Canada and I managed to resolve it.

Go to Settings>Wireless & Network Settings>Mobile Networks>Access Point Names and open whichever one corresponds to your SP. Make sure the first two fields (Name and APN) are filled out. When I bought mine everything was checked except for these. The information you have to enter will vary based on your service provider, but if you give them a call or check another phone which is also with them you should be able to figure out what to put.

Doppelgarage said:
Maybe somebody here knows an answer.
my phone:
Nexus S
CM7
KB3
i cant get any gprs (dataconnection) with my simcard. apn settings are ok
if i use my old simcard of a different provider everything works fine
could the simcard be broken? any ideas? what else could be the problem?
thx c
Click to expand...
Click to collapse
Try a new simcard. That happened to me, one day i noticed all data stopped working, then withink 30 mins my voice was gone too. Luckily my Nexus came with a new sim so i popped that in and called T-Mo and provisioned the new SIM. Works better than ever now. I recommend everyone use a new sim card in the phone because it really does help with the phone.

adewey234 said:
Try a new simcard. That happened to me, one day i noticed all data stopped working, then withink 30 mins my voice was gone too. Luckily my Nexus came with a new sim so i popped that in and called T-Mo and provisioned the new SIM. Works better than ever now. I recommend everyone use a new sim card in the phone because it really does help with the phone.
Click to expand...
Click to collapse
It is rare for a new sim card to be required. if your phone is stock, you are best to call tech support. Repushing the sim is often enough. Besides here, it's $10 for a new sim and $25 to provison it unless waived by tech support our it's a new activation.
Sent from my Nexus S

[Q] HTC Merge SIM help

Hello, I bought a SIM card from straight talk hoping to use it on my merge because I have seen people online that says I can do that as long as i have my SIM card unlocked. But after I got the card activated and put it in my phone it don't work. I try changing to GSM and using their APN but I have no signal, the mobile network just stays unchecked and I cannot check it. After a few minutes my phone suggests switching over to global mode and i do have mobile signal then but still no connection with anything. I called the straight talk woman and she told me it only works with AT&T or T-Mobile phones but it just don't make any sense to me that you have to have one of those previous carious just to get them as a new carrier? Am I missing something here?

Fixed
deathknight842 said:
Hello, I bought a SIM card from straight talk hoping to use it on my merge because I have seen people online that says I can do that as long as i have my SIM card unlocked. But after I got the card activated and put it in my phone it don't work. I try changing to GSM and using their APN but I have no signal, the mobile network just stays unchecked and I cannot check it. After a few minutes my phone suggests switching over to global mode and i do have mobile signal then but still no connection with anything. I called the straight talk woman and she told me it only works with AT&T or T-Mobile phones but it just don't make any sense to me that you have to have one of those previous carious just to get them as a new carrier? Am I missing something here?
Click to expand...
Click to collapse
Thanks to the helpful people over at 2fastroms and their quick response I found out that you have to have the 1.06.00.0910 verizon radio flashed to your system. You have to install the radio in the boot-loader and not the recovery menu, it took me a minute to figure that one out. Just informing anyone that has the same problem as me because I could not find it anywhere else on the web. Anyway credit to jianC for the help.

[Q] Phone Thinks I Am Roaming

Hello,
I bought my HTC Sensation about a year ago on Ebay. The seller claimed the phone was purchased outright and paid off. I checked the imei and it showed clean. When I got it, I popped my Airfire sim card into it and it worked fine. A month ago, I switched to Cricket as Airfire was going out of business. Cricket made me enter my imei. It said it was bad. I called T-Mobile and they said the seller defaulted on payments. They refused to help in any way. They told me to buy the phone direct from them next time. I told them I had proof I was buying it in good faith. They didn't care and apparently have no problem punishing the victim.
Anyways, when I got my Cricket sim and popped it in, my phone said I was roaming. It has said I was roaming for a full month now. I can send and receive calls, but my data is stuck at EDGE and some of the programs don't work since the phone thinks its roaming. I need to have "data roaming" enabled for data to work. Cricket ran some tests and eventually said I needed to do a factory reset.
So, I switched from the Android Revolution rom to the ViperS 5.2.1 rom. I did a full dalvik and cache wipe and reformatted everything but the sd card. I installed the new rom and kernal. Same thing. Phone still says I am roaming. Odd thing is, when I go to manually select carrier, my options are Cricket (current carrier), Airfire (previous carrier) and TMobile (stock carrier). Also, when I am using data, it has an "E" above the data. E is what Airfire used. Is there somehow somewhere a place that the phone is storing info through wipes?
I am s-off, rooted and debranded. I sim unlocked the phone myself. I am so stuck and think that only one of the geniuses on XDA are my only hope. I have went mental spending hours and hours on this. Some XDA peeps are smarted than HTC and Cricket combined, so please help me out here.
Thanks,
Grant

SuperGrant said:
Hello,
Thanks,
Grant
Click to expand...
Click to collapse
Hi grant, this is a very odd situation your in. With my sensation when I leave the UK and connect to another EU "partner network" is the only time my phone would jump into roaming mode. Is it possible that cricket is not directly supported in your area? Maybe they rent their local connection from another carrier and thats why your getting connected as roaming? Have you tried any other sim cards to see if they come up as roaming?
Sent from my HTC Desire S using Tapatalk

Hi heavy_metal_man
I am quite sure that At&t is Cricket's parent company so all of the towers should be At&t's networks. Also, I have checked it when in other cities and I get the same message, though I haven't traveled more than 30 miles away.
The previous sim with AirFire worked fine. I also popped out the sim for Cricket and put it in my mom's phone to see if it was the sim. Her's worked fine. She got the automatic Cricket update settings right away and was not roaming. Mine never got the Cricket pop-up so I had to manually enter all of the data info. Yes, odd indeed and I am lost.

SuperGrant said:
I am quite sure that At&t is Cricket's parent company so all of the towers should be At&t's networks. Also, I have checked it when in other cities and I get the same message, though I haven't traveled more than 30 miles away.
The previous sim with AirFire worked fine. I also popped out the sim for Cricket and put it in my mom's phone to see if it was the sim. Her's worked fine. She got the automatic Cricket update settings right away and was not roaming. Mine never got the Cricket pop-up so I had to manually enter all of the data info. Yes, odd indeed and I am lost.
Click to expand...
Click to collapse
OK, the info your adding manually, is that the same info as is registered when the card is in your mums phone? Same APN etc?
Sent from my HTC Sensation using Tapatalk

heavy_metal_man said:
OK, the info your adding manually, is that the same info as is registered when the card is in your mums phone? Same APN etc?
Hi heavy_metal_man. Yup. Same info. Only difference is that the info all loads automatically on hers. I do get automated texts from Cricket when I put the sim in my phone as did she, but I had to get the APN info from Cricket the first time because it didn't auto load. I am still wondering if it is a sim issue, but I expected my mom's phone to be roaming when I put the sim in hers. I was shocked when it wasn't. She just has a free stock phone from Airfire btw. Nothing fancy and nothing done to it.
Click to expand...
Click to collapse

SuperGrant said:
heavy_metal_man said:
OK, the info your adding manually, is that the same info as is registered when the card is in your mums phone? Same APN etc?
Click to expand...
Click to collapse
Hi heavy_metal_man. Yup. Same info. Only difference is that the info all loads automatically on hers. I do get automated texts from Cricket when I put the sim in my phone as did she, but I had to get the APN info from Cricket the first time because it didn't auto load. I am still wondering if it is a sim issue, but I expected my mom's phone to be roaming when I put the sim in hers. I was shocked when it wasn't. She just has a free stock phone from Airfire btw. Nothing fancy and nothing done to it.
Click to expand...
Click to collapse
Hmm. Are those 3 carriers the only ones available to you? I think the imei may be key here, if cricket know its a T-Mobile phone they may register that you are roaming. I think your previous carrier (airfire) was a Virtual mobile network, much like giffgaff in the UK ( which runs on the o2 network.) As such they may not have inforced the same imei policy's that cricket does. But this is just a hunch as I am on UK networks and we do things much differently. If you could ask about any friends and colleges that have different carrier simcards from our previous 3 you could gauge what carriers your phone is compatible with.
Worst case scenario you could maybe buy another broken htc sensation and perform a motherboard swap. This would solve your imei issue, assuming that it was the primary issue. But check the simcards first and report back
Sent from my Nexus 7 using Tapatalk

heavy_metal_man said:
Hmm. Are those 3 carriers the only ones available to you? I think the imei may be key here, if cricket know its a T-Mobile phone they may register that you are roaming. I think your previous carrier (airfire) was a Virtual mobile network, much like giffgaff in the UK ( which runs on the o2 network.) As such they may not have inforced the same imei policy's that cricket does. But this is just a hunch as I am on UK networks and we do things much differently. If you could ask about any friends and colleges that have different carrier simcards from our previous 3 you could gauge what carriers your phone is compatible with.
Worst case scenario you could maybe buy another broken htc sensation and perform a motherboard swap. This would solve your imei issue, assuming that it was the primary issue. But check the simcards first and report back
Sent from my Nexus 7 using Tapatalk
Click to expand...
Click to collapse
Hmm... There are only 3 carriers available. Should there be more? It's not tied to the sim? Everyone I know either still has Airfire and plans on switching to Cricket or has cdma so I have been out of luck with trying another sim. The only other thing I thought about was 4ext recovery. No matter what I flash; roms, kernals, firmware or radios, the recovery always survives of course. So, if the previous carriers are surviving the flashes, perhaps there is a place on the phone like the recovery where they are surviving.

SuperGrant said:
Hmm... There are only 3 carriers available. Should there be more? It's not tied to the sim? Everyone I know either still has Airfire and plans on switching to Cricket or has cdma so I have been out of luck with trying another sim. The only other thing I thought about was 4ext recovery. No matter what I flash; roms, kernals, firmware or radios, the recovery always survives of course. So, if the previous carriers are surviving the flashes, perhaps there is a place on the phone like the recovery where they are surviving.
Click to expand...
Click to collapse
Its unlikely to be to do with the recovery, no reason for it to keep anything like that. It's most likely the phones imei at this point, though im unsure as to why this was not an issue for airfire.
Do you know what firmware version you have? Have you flashed 3.33 by yourself?
Sent from my Nexus 7 using Tapatalk

heavy_metal_man said:
Its unlikely to be to do with the recovery, no reason for it to keep anything like that. It's most likely the phones imei at this point, though im unsure as to why this was not an issue for airfire.
Do you know what firmware version you have? Have you flashed 3.33 by yourself?
Sent from my Nexus 7 using Tapatalk
Click to expand...
Click to collapse
Yup, I flashed 3.33 universal after doing a super Cid. Well, maybe its time to just get a new phone, although I would really like to figure out this problem first. I am not the kind of person who can just drop things, lol.

SuperGrant said:
Yup, I flashed 3.33 universal after doing a super Cid. Well, maybe its time to just get a new phone, although I would really like to figure out this problem first. I am not the kind of person who can just drop things, lol.
Click to expand...
Click to collapse
I know how you feel. Maybe its because they cricket know the sensation 4g is a T-Mobile device and force you into roaming mode by default. I think its possible to overwrite the devices mid and cid, flash a sensation XE rom and effectively have a sensation XE. But such things can be quite dangerous and i couldn't say for definite if it would work to fix your issue :/ (not recommending anyone tries this without proper research and understanding :/)
Can you get access to another cricket sim without a contract? Just for testing?
Sent from my Nexus 7 using Tapatalk

heavy_metal_man said:
I know how you feel. Maybe its because they cricket know the sensation 4g is a T-Mobile device and force you into roaming mode by default. I think its possible to overwrite the devices mid and cid, flash a sensation XE rom and effectively have a sensation XE. But such things can be quite dangerous and i couldn't say for definite if it would work to fix your issue :/ (not recommending anyone tries this without proper research and understanding :/)
Can you get access to another cricket sim without a contract? Just for testing?
Sent from my Nexus 7 using Tapatalk
Click to expand...
Click to collapse
I believe I have already done that. When I go into info about my phone, it says Sensation XE. It also registers as Sensation XE in the Google play store. I was thinking about telling Cricket to send me a new sim. Otherwise, I have no access to one at this time.

SuperGrant said:
I believe I have already done that. When I go into info about my phone, it says Sensation XE. It also registers as Sensation XE in the Google play store. I was thinking about telling Cricket to send me a new sim. Otherwise, I have no access to one at this time.
Click to expand...
Click to collapse
I think that it would be your best bet, although your device is probably showing up on the play store as an XE because of its build.prop from your custom rom, not any advanced MID changes. although you can check by using the command
Code:
fastboot getvar all
this will show your your mid, cid and your imei among other things.

SuperGrant said:
I believe I have already done that. When I go into info about my phone, it says Sensation XE. It also registers as Sensation XE in the Google play store. I was thinking about telling Cricket to send me a new sim. Otherwise, I have no access to one at this time.
Click to expand...
Click to collapse
I've worked it out! Its a frequency issue. Cricket apparently only support cdma frequency's, while the sensation only uses gsm frequency's. So in order to connect your phone is bunnying onto a local gsm service, which is then redirecting you to cricket. Hence the roaming! If you want off the data roaming you will need to either swap to a different phone carrier or buy a cdma phone
Sent from my Nexus 7 using Tapatalk

Hi heavy_metal_man,
Cricket did use CDMA for most of the time, but they have switched to GSM. They send a sim now and are trying to switch all of their old customers to GSM. What I am having trouble figuring out is what frequencies they use. Perhaps my phone is not quite compatible. I am having trouble with that as well. GSM arena, Phonescoop and the other major sites kind of have different data as far as my phone goes. My phone is called "HTC Sensation 4G" as far as I know. Yet, they list no 4g capability or frequencies. Of course, I believe that would only affect data and I still should not show as roaming.
I have been unable to figure out fastboot since switching to the viper rom. It doesn't use usb mass storage anymore. It uses the new system in which the whole phone is recognized as a storage device by the computer. Forgot what they called it. I wish they hadn't changed it, and apparently Windows 7 should recognize it by default, but it does not. I am sure if I get enough time to put into it I will figure out how to use the fastboot commands again.
I am ready to give up and just get a new phone pretty soon. Would be nice if Cricket's customer service wasn't so worthless. It could still be the IMEI or something on their end that I can do nothing about but they have failed to provide any solution.

SuperGrant said:
Hi heavy_metal_man,
Cricket did use CDMA for most of the time, but they have switched to GSM. They send a sim now and are trying to switch all of their old customers to GSM. What I am having trouble figuring out is what frequencies they use. Perhaps my phone is not quite compatible. I am having trouble with that as well. GSM arena, Phonescoop and the other major sites kind of have different data as far as my phone goes. My phone is called "HTC Sensation 4G" as far as I know. Yet, they list no 4g capability or frequencies. Of course, I believe that would only affect data and I still should not show as roaming.
I have been unable to figure out fastboot since switching to the viper rom. It doesn't use usb mass storage anymore. It uses the new system in which the whole phone is recognized as a storage device by the computer. Forgot what they called it. I wish they hadn't changed it, and apparently Windows 7 should recognize it by default, but it does not. I am sure if I get enough time to put into it I will figure out how to use the fastboot commands again.
I am ready to give up and just get a new phone pretty soon. Would be nice if Cricket's customer service wasn't so worthless. It could still be the IMEI or something on their end that I can do nothing about but they have failed to provide any solution.
Click to expand...
Click to collapse
Sorry for my delayed reply, I noticed that cricket swapped out to gsm and I discovered that their gsm tech is actually supplied at&t as they bought them out.
So I looked at their coverage map for the area airfire operated and I noticed that they had 2 or 3 area that were only providing 3g support via a partner, so I assume that would put you into roaming. It might be worth a look at their map and confirm if you reside on one of these black areas ?
Sent from my HTC Desire S using Tapatalk

4g LTE broken on verizon m8 after travel

Hello,
My HTC m8 on verizon was working great with 4G LTE until I traveled and used an alternative SIM. Now I can only use 3G. My brother is on the same account and we swapped sim cards. The phone was still stuck in 3G. My SIM connected to 4G LTE on his iphone. Verizon reset a bunch of stuff on the network side (never really sure quite what they are doing when I call). I checked the APN and tried most of the options without luck. I'm not sure what the settings should be, so that would seem to be a good place to start. Verizon sent me a new SIM, but I'm hesitant to go through the trouble of swapping it since it doesn't seem to be an issue with the SIM.
Anyone have the correct APN settings? Any other suggestions for troubleshooting?
Someone on reddit had the same issues (xda won't let me post links yet). I contacted them, but I haven't heard back.
Best,
Josh

karunamuni said:
Hello,
My HTC m8 on verizon was working great with 4G LTE until I traveled and used an alternative SIM. Now I can only use 3G. My brother is on the same account and we swapped sim cards. The phone was still stuck in 3G. My SIM connected to 4G LTE on his iphone. Verizon reset a bunch of stuff on the network side (never really sure quite what they are doing when I call). I checked the APN and tried most of the options without luck. I'm not sure what the settings should be, so that would seem to be a good place to start. Verizon sent me a new SIM, but I'm hesitant to go through the trouble of swapping it since it doesn't seem to be an issue with the SIM.
Anyone have the correct APN settings? Any other suggestions for troubleshooting?
Someone on reddit had the same issues (xda won't let me post links yet). I contacted them, but I haven't heard back.
Best,
Josh
Click to expand...
Click to collapse
These are the vzw apn settings. Anything not in the screen shot is either nothing or not set

karunamuni said:
Hello,
My HTC m8 on verizon was working great with 4G LTE until I traveled and used an alternative SIM. Now I can only use 3G. My brother is on the same account and we swapped sim cards. The phone was still stuck in 3G. My SIM connected to 4G LTE on his iphone. Verizon reset a bunch of stuff on the network side (never really sure quite what they are doing when I call). I checked the APN and tried most of the options without luck. I'm not sure what the settings should be, so that would seem to be a good place to start. Verizon sent me a new SIM, but I'm hesitant to go through the trouble of swapping it since it doesn't seem to be an issue with the SIM.
Anyone have the correct APN settings? Any other suggestions for troubleshooting?
Someone on reddit had the same issues (xda won't let me post links yet). I contacted them, but I haven't heard back.
Best,
Josh
Click to expand...
Click to collapse
Anything not in the screen shots are either "nothing" or "not set"

Still Stumped
BladeRunner said:
Anything not in the screen shots are either "nothing" or "not set"
Click to expand...
Click to collapse
Thanks for the APN settings. Everything looks correct on my phone. Any other suggestions?

karunamuni said:
Thanks for the APN settings. Everything looks correct on my phone. Any other suggestions?
Click to expand...
Click to collapse
what preferred network type is it set to? Global? LTE/CDMA only or something else?

I'm assuming you're running the full stock rom. A factory reset would almost certainly clear it up for you. I know it sucks to set up your phone again but I'll bet it works.

Problems with customized device and Sprint

I flashed the crDroid ROM onto my stock g7 Power, no problems. Flashed gApps and Magisk, everything ok. I did all of this while the device was unactivated and with the SIM card not in it. Everything works fine. But when I activated the device on the Sprint network and inserted the SIM card, I get no data. I know people have said you can manually edit the APNs in the Mobile Network settings, but the problem for me is, there is no APN option in that menu. However, when I remove the SIM card, I DO see the APN settings option there, but of course the whole menu is grayed out because the SIM card is removed. Has anyone else been able to customize and root one of these phones for use on the US Sprint network? Should I use a different ROM? Any suggestions would be helpful.

Tsuroshi said:
I flashed the crDroid ROM onto my stock g7 Power, no problems. Flashed gApps and Magisk, everything ok. I did all of this while the device was unactivated and with the SIM card not in it. Everything works fine. But when I activated the device on the Sprint network and inserted the SIM card, I get no data. I know people have said you can manually edit the APNs in the Mobile Network settings, but the problem for me is, there is no APN option in that menu. However, when I remove the SIM card, I DO see the APN settings option there, but of course the whole menu is grayed out because the SIM card is removed. Has anyone else been able to customize and root one of these phones for use on the US Sprint network? Should I use a different ROM? Any suggestions would be helpful.
Click to expand...
Click to collapse
Hey there... This is just a possibility...
A while back, I put my sister's CDMA sim into a custom Rom-ed phone. Couldn't add an APN for the life of me. And then, duh , it turns out it was because the phone radio was set on LTE/UMTS (auto)... Is your radio set for LTE/CDMA?

motolio said:
Hey there... This is just a possibility...
A while back, I put my sister's CDMA sim into a custom Rom-ed phone. Couldn't add an APN for the life of me. And then, duh , it turns out it was because the phone radio was set on LTE/UMTS (auto)... Is your radio set for LTE/CDMA?
Click to expand...
Click to collapse
Turns out it was on "LTE/CDMA/UMTS auto (PRL)". I changed it to "LTE/CDMA auto (PRL)" which is what the Sprint network uses, I'm pretty sure. That did seem to change some things, but I still don't see any APN settings and I still don't have data, unfortunately.* I think this ROM is just not set up to work on the Sprint network? Maybe I'll try flashing a different one.

Tsuroshi said:
Turns out it was on "LTE/CDMA/UMTS auto (PRL)". I changed it to "LTE/CDMA auto (PRL)" which is what the Sprint network uses, I'm pretty sure. That did seem to change some things, but I still don't see any APN settings and I still don't have data, unfortunately.* I think this ROM is just not set up to work on the Sprint network? Maybe I'll try flashing a different one.
Click to expand...
Click to collapse
Here's a how to video on getting a working apn in a device. Works perfectly on my end.

Tsuroshi said:
I flashed the crDroid ROM onto my stock g7 Power, no problems. Flashed gApps and Magisk, everything ok. I did all of this while the device was unactivated and with the SIM card not in it. Everything works fine. But when I activated the device on the Sprint network and inserted the SIM card, I get no data. I know people have said you can manually edit the APNs in the Mobile Network settings, but the problem for me is, there is no APN option in that menu. However, when I remove the SIM card, I DO see the APN settings option there, but of course the whole menu is grayed out because the SIM card is removed. Has anyone else been able to customize and root one of these phones for use on the US Sprint network? Should I use a different ROM? Any suggestions would be helpful.
Click to expand...
Click to collapse
Did you ever get it going? When I install Pixel Experience + I have no apns at all. Not in system/product/etc or product/etc which is where they are supposed to be located. So I just paste apn.conf.xml in the system/product/etc and set 0644 then go to networks and internet/mobile networks/access point names and hit reset to default and data's on , reboot afterwards and it's all fine. What's your model # on your device? Also are you sure your sim card isn't damaged? When they crack sometimes it's impossible to see with the naked eye. And technically you're not on Sprint anymore you're on T-Mobile because they finally finished the deal and Tmo now owns Sprint. (Which is a really good thing imo) ;p if and when you do get your issue resolved be sure and save your apn.conf.xml and upload it to Google drive or something so you'll have it if you need it again. I noticed that the first APN xml files I linked you to I had apn.config.xml for the name and that's not correct supposed to be apn.conf.xml My bad on that. Sometimes I drink a lot of coffee. [emoji41]
Sent from my [device_name] using XDA-Developers Legacy app

Is sprint already not cdma?

motolio said:
Is sprint already not cdma?
Click to expand...
Click to collapse
No nothing has changed at this time. Sprint's still CDMA
Sent from my moto g(7) power using XDA-Developers Legacy app

flash713 said:
No nothing has changed at this time. Sprint's still CDMA
Click to expand...
Click to collapse
All cdma phones go both ways since around 2015 cdma phones don't use sim card for calling or texting if u use the data then u use sim card aka gsm.Sprint is not going to change for at least 3 years on there current phone plans as for going to gsm only do not know as most companies are fashing out cdma cause it old tec .That is what I have found out from T-Mobile web sight

roadkill42 said:
All cdma phones go both ways since around 2015 cdma phones don't use sim card for calling or texting if u use the data then u use sim card aka gsm.Sprint is not going to change for at least 3 years on there current phone plans as for going to gsm only do not know as most companies are fashing out cdma cause it old tec .That is what I have found out from T-Mobile web sight
Click to expand...
Click to collapse
Please tell me more about CDMA also using GSM because they are two different technologies.. CDMA was used by USA military back in ww2 to send messages safely and GSM is what most the world uses. CDMA has always been more of a USA tech while GSM has always been pretty much what everyone else uses. They both send information in different ways. They do not work the same or together far as I know.
If you want to be more compatible with development use a GSM carrier like Metro, T-Mobile because GSM is what still rules the world far as phone tech goes. And we here in the USA only make up a small piece of the world far as development goes.