Pentaband?

[giodelgado]

just got my unlock code, internet sharing works with AT&T, the network setup app gave me two options AT&T 3G or AT&T LTE, I think because I'm using the Lumia 900 microsim, visual voicemail works only when I select AT&T LTE and this was setup already with my Lumia 900

just one problem, the device says my batt is critically low like at 50% and turns off, this continues until I try to charge it, has done it twice, could it be the ROM, bad battery or device?

 

[northwestguy]

Okay, I've had some success. Two separate AT&T representatives told me that 4G on prepaid was impossible, so I had just about given up hope and went down to the store to inquire about options. The agent there simply entered an APN, and data started working. Here's the info I can see:

APN: wap.cingular
Username: wap@cingulargprs.com

I'm not able to see the password, and I'm not about to experiment since it finally works, but I've seen other people saying to use CINGULAR1 in all caps.

This got data working perfectly. So I'm on prepaid, using a T-Mobile phone, and getting (I think) 4G rates (though I'm happy with any speed).

The only thing that doesn't work right now is MMS. Does anyone know why this would be? Does this go over a different data channel or something?

 

[northwestguy]

just got my unlock code, internet sharing works with AT&T, the network setup app gave me two options AT&T 3G or AT&T LTE, I think because I'm using the Lumia 900 microsim, visual voicemail works only when I select AT&T LTE and this was setup already with my Lumia 900

just one problem, the device says my batt is critically low like at 50% and turns off, this continues until I try to charge it, has done it twice, could it be the ROM, bad battery or device?

giodelgado,

Where did you get the ROM? Is it available in a trusted source?

 

[northwestguy]

Okay, I've had some success. Two separate AT&T representatives told me that 4G on prepaid was impossible, so I had just about given up hope and went down to the store to inquire about options. The agent there simply entered an APN, and data started working. Here's the info I can see:

APN: wap.cingular
Username: wap[at-symbol]cingulargprs.com

I'm not able to see the password, and I'm not about to experiment since it finally works, but I've seen other people saying to use CINGULAR1 in all caps.

This got data working perfectly. So I'm on prepaid, using a T-Mobile phone, and getting (I think) 4G rates (though I'm happy with any speed).

The only thing that doesn't work right now is MMS. Does anyone know why this would be? Does this go over a different data channel or something?

 

[giodelgado]

Okay, I've had some success. Two separate AT&T representatives told me that 4G on prepaid was impossible, so I had just about given up hope and went down to the store to inquire about options. The agent there simply entered an APN, and data started working. Here's the info I can see:

APN: wap.cingular
Username: wap[at-symbol]cingulargprs.com

I'm not able to see the password, and I'm not about to experiment since it finally works, but I've seen other people saying to use CINGULAR1 in all caps.

This got data working perfectly. So I'm on prepaid, using a T-Mobile phone, and getting (I think) 4G rates (though I'm happy with any speed).

The only thing that doesn't work right now is MMS. Does anyone know why this would be? Does this go over a different data channel or something?

I got it from Navifirm, a tool used to download most/all Nokia firmwares

never ask features to AT&T reps, they don't know anything about unsupported devices, the only thing you need from them is a microsim and service, that's it.

I flashed mine based on this guide, here's my guide for the Lumia 710