[AT&T Samsung Galaxy Note I717] sashusmom:
I don't know if this will help now. But here is my Note history.

Got it from ATT when first released almost a year ago. I used my son's upgrade so I was not locked into ATT. My line was out of contract. I rooted it pretty quickly and flashed many roms- on GB. I used it for a month or 2 on ATT- didn't have lte in my area and was fed up with att- So got an unlock code from cellunlocker.net for $25. It worked fine. I had a PAYG account with tmobile and voice worked fine, data was edge only. I used Tomin's fix which- seemed so long ago- but my upload speed was very poor and it heated up the phone. I ended up putting it on ice, got a galaxy nexus, said goodbye to att, and used that for a while.

Tried the 4g monthly plan for a couple months- Then went to Consumer cellular- you could bring any att phone and use their sim cards. Dug out my Note, and it worked well, but only did the month trial- my daughter did not like her phone. So she stayed on the family plan with ATT and upgraded her phone. I left ATT and tried Straight talk. It was OK. Was not impressed with the upload speeds. 0.5 to 1mbps on the att sim.

All this time I was trying many different roms- JB based- went through all of them and they all had instability problems. Went back to the ICS roms for stability since I was using my note more and more over the GNex. Sometimes I would get that circle with the line through it- it was frustrating- mostly with the JB roms- and I would have to wipe the phone and reinstall the rom- that would fix it and bring back phone and data.

The $30 4g tmo plan was still calling to me....So went back and looked at the progress with the modems for the note- flashed the blaze, and that was the fix for me several months ago. I did the foil mod to improve up speeds- was getting 0.15mbps- not so hot. Foiled brought it up to 0.3 to 0.5 mbps. Settled on Padawan ics rom and stuck with it. but it had an ATT modem built in, so every reflash and update I would have to flash blaze after the upgrade. The last upgrade to version 5 I speed tested and my upload speed was 3.5- never had it that high before- figured out I was picking up the 1900 band on the att modem- I had forgotten to flash the blaze modem. DL speed was 13mbps. WOW! But it was very intermittent connection so I must be on the edge of the tower. I went back to blaze and Occasionally I will get that 3.0 mbps up speed.

To sum up my history-

ATT- ran fine- not a surprise since it's their phone. Rooted, and unlocked in anticipation of running it and trials on tmo. Flashed many different roms from GB to ICS to JB and back. No issues at all.;)

T-mobile was a rough start- 6 months ago became very reliable and runs with no problems with the blaze modem and any rom of choice- now Padawan.;)

Tried on Consumer Cellular. An mvno of ATT. Ran no problems. Had to put in my correct apn since CC did not support the Note. I think it was too new and att must have a block on support, but since it was unlocked, it ran fine.:)

Trial on Straight talk. Ran fine, but the att sim speeds were disappointing compared to t-mo- DL of 2-3mbps, UL of .5- not enough for voice over 3g.:( Also, their unl data gets throttled after 2gb.:eek:

Back to t-mobile. I was able to get my PAYG balance and number transferred to a new 4g $30 unl data, text, and 100 min. Data speeds on blaze- DL is 10>mbps and UL is 0.5 to 2ish mbps. The only time I switch back to my GNex is when I need a smaller phone to carry. I am still exploring modems to take advantage of the 1900 band I found in the last couple days, North Jersey. Would love to buy the tmo note II but can't justify the expense. The Note is great!:laugh:

I never lost my imei# ever. The blaze modem shows up as unknown.