Converting from T-Mobile to AT&T

[Rick Opp]

I have a friend that has a T-Mobile XDA and wants to change to AT&T.

She took it to the local AT&T office and they said they cound convert the phone but they would not be able to give her the capability to brouse the internet.

Can the phone be changed over to AT&T without loosing any of the online capabilities?

Thanks
Rick Opp

[Mad Max]

I have a friend that has a T-Mobile XDA and wants to change to AT&T.

She took it to the local AT&T office and they said they cound convert the phone but they would not be able to give her the capability to brouse the internet.

Can the phone be changed over to AT&T without loosing any of the online capabilities?

Thanks
Rick Opp

I've never heard of either carrier being receptive to SIM unlocking, even when they're the "gaining" carrier, so I'm a little suspect of this. That being said, I moved from ATTWS to T-Mobile and had no trouble connecting to GPRS on the T-Mobile side, I suspect it will be the same for you. I would use the tools here to unlock the phone and just keep ATTWS's hands off my device.

[Carlos]

Yup, unlock it with the tools here, find the AT&T GPRS settings, and go for it. I'm not sure if loading the AT&T Radio Stack would be good, maybe someone else knows? Mad Max, did you change to the T-Mobile radio?

[Mad Max]

Mad Max, did you change to the T-Mobile radio?

I have not. Am curious about other's observations. I'm running ATTWS's stack A.20.10 with no problems on T-Mobile, including full GPRS access. Only thing unusual seems to be that my signal meter always reads very low when I'm on T-Mobile, even in places where my other t-mobile phone is almost maxed out on signal strength. Others on the board have mentioned this, so I don't know if it's linked to my cross-carrier configuration or not.

[raycarroll70]

All you have to do is get ahold of T Mobile USA's Customer Care Department and as long as you have had your account with them for at least 3 months and don't have any past due charges on it, they should be able to get you the SID unlock code. Just tell them you're going to be going overseas and one of the GSM carriers over there is giving you a prepaid SIM to use while in their country and they need you to have your Pocket PC Phone Edition unlocked. I had an unlocked one and used it just fine with the T Mobile OEM software in it. The only thing strange I guess is you'll be using ATTWS service with a T Mobile USA device. LOL! I won an SX56 from Siemens so now I'm using it. Bought my T Mobile one for $200 on eBay and resold it for $320. Talk about profit. I hope the IRS aren't reading these forums. LOL! 8)

[Rick Opp]

OK

So if I understand correctly, if I just unlock the SIM and take it into the local AT&T store they should be able to get it set up with both AT&T phone service and Internet, Right?

Thanks for the info

Later
Rick :P

[Mad Max]

So if I understand correctly, if I just unlock the SIM and take it into the local AT&T store they should be able to get it set up with both AT&T phone service and Internet, Right?


You are correct sir. It will take a couple of minutes to set up the GPRS dial string and settings, but otherwise it will work perfectly.

[Rick Opp]

OK

Thanks for the help. I have already ordered the connector to make a serial cable.

One other thought before I do this...

Is there someone out there that has a Siemens with AT&T they want to trade for a T-Mobile ???

Thanks

Rick :lol:

[Peter Poelman]

Is there someone out there that has a Siemens with AT&T they want to trade for a T-Mobile ???
It really is the exact same device inside: just burn a new ROM and you'll have the same device. That simple...

[kevincw01]

last weekend i went to t-mobile with my att xda and ordered service since att in so cal is beyond horrible. I signed up with a plan which gave me a free phone. He pulled the sim card that came with the phone out of the box and put it in my xda. in 1 minute i receved a sms that said "OTA OK" and my phone worked (with a full signal). I dont use internet but all you have to do is ask for the gprs connection string and type it in.

[Rick Opp]

Apparently the phone was unlocked when they took it to the AT&T store. The tech said they could set up everything but the internet access.

Maybe the techs at that office don't know how to do it.

How do you go about finding out what the GPRS connection string is supposed to be? Is it device specific or location specific? Is it something I can get myself or does AT&T have to provide a unique string?

Is the internet access only offered in certain areas?

Or maybe someone can recommend a "qualified" AT&T office to take it to to get the service set up. I am in the Austin TX area.

I'm kinda new to this so bear with me.

Thanks

Rick Opp :roll:

[Mad Max]

How do you go about finding out what the GPRS connection string is supposed to be? Is it device specific or location specific? Is it something I can get myself or does AT&T have to provide a unique string?


I think what they mean is that they don't know how to do it at the store, but you can get the info by calling into ATTWS customer care and asking for data tech support.

Like T-Mobile, the info is NOT device or location specific. Simply set the connection to be "Cellular Line (GPRS)" in the pull-down menu, and the access point name is "proxy". If you're asked specifically for a proxy server name ( I was in version 3, but not in ROM version 4) the ATTWS proxy server is "localhost".

In older ROM versions, there was more to do, but on 4.00.11, that's about all there is to it. If you need the other stuff like IP addresses for proxy servers and WAP gateways, let me know and I can post that two, but doesn't seem to be needed under ROM v4. I have the connection stuff for both ATTWS and Tmobile entered into two connections, because I sometimes flip SIMs between carriers, and it works great.

[Rick Opp]

OK, Great

thanks for the info.

I'll let you know how it turns out.

rick Opp :)

[Rick Opp]

We got the phone working. That was the easy part.

A new AT&T SIM was installed.

We entered the GPRS setup parameters given to us by the AT&T tech.

I was told that when the inverted "G" showed up in the signal strength status window that GPRS would be available. When the G showed up I could connect but IE bombed out saying the page could not be located when attempting to browse.

An AT&T tech told me to do a hard boot. After the hard boot, the G no longer shows up. I can still log on to GPRS but IE still bombs out.

Any suggestions?

The settings provided by AT&T are listed below. Perhaps someone could compare it to their settings ans see if maybe AT&T gave me bad info.

Connection name:
GPRS Connection
Cellular Line (GPRS)
Baud rate = 19200
Use server assigned IP address

Under Modem Tab:
Name GPRS Connection
Number +0 ~GPRS!proxy

Under Proxy Settings:
Both connects to internet and uses proxy server boxes checked
Proxy Server localhost
Advanced Settings:
HTTP localhost : 9090
WAP 10.250.250.250 : 9201
Socks localhost ; 1080
Type = Socks 4

Thanks again for your help.

Later
Rick

[Qman]

I have a friend that has a T-Mobile XDA and wants to change to AT&T.

She took it to the local AT&T office and they said they cound convert the phone but they would not be able to give her the capability to brouse the internet.

Can the phone be changed over to AT&T without loosing any of the online capabilities?

Thanks
Rick Opp


Since this is not your device I would suggest that you just install the latest official Pocket PC 2002 AT&T ROM and Radio stack which can be downloaded from the below link (she can always later upgrade it to WM2003 if she want to) :

http://www.my-siemens.com/com.aperto/MySiemens/Files/Addon/da/us/mw/mc/mc/ruuv1.11_cea.20.17wwe_aws.exe

How to convert:
After you have the above needed file run it!.
Once it has finished 'unpacking files', cancel out of it and use Windows Explorer to go to the
C:\Program Files\SX56 upgrade utility folder.

Now download adaptROM.exe from: http://xda-developers.com/adaptROM/
and place it in the C:\Program Files\SX56 upgrade utility folder

Then go to DOS and run adaptROM.exe from the C:\Program Files\SX56 upgrade utility folder.

After adaptROM has finished return to the C:\Program Files\SX56 upgrade utility folder and run upgrade.exe .



HTH

[Rick Opp]

Thanks

I'll give it a try tomorrow after work.

The saga continues......

Later
Rick

[Rick Opp]

:)

Success!

After running adaptrom and installing the Siemens ROM update everything works perfectly.

Thanks for all the help.

These things are pretty cool. Maybe I'll get one for myself.

:wink:

Later
Rick

[Qman]

Glad to hear it worked out and yea they're pretty cool! :)