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[Q] QPST and getting T-Mobile HSPA+/LTE Bands

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ruidh
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Default [Q] QPST and getting T-Mobile HSPA+/LTE Bands

I have a new I9505G running Kit Kat 4.4.2. It consistently gets HPSA but does not get HPSA+ or LTE even though I am in a T-Mobile LTE service area (New York City).

I called Google device support and they referred me to this Youtube http://www.youtube.com/watch?v=eb0iCtG4T6I

It advises installing a phoneutil.apk on the phone and QPST on a Windows computer. I verified that the Samsung USB drivers are installed. But where I reach the step where I enter *#0808# on the phone to get to the menu where I can select DM+MODEM+ADB the procedure fails. Entering *#0808# gets me "USSD code running..." shown briefly before showing "Unable to process request" and an OK button. Without this step, the Samsung USB Modem drivers did not show under Ports in Device Manager when the phone is connected via USB. I have used the original S4 USB cord. No com ports show with 0 in the Phone column in QPST and I am led to believe that I can't install the 337_AWS.qcn file to get the additional bands.

My bootloader *is* unlocked (and the phone is rooted). I read this thread which refers to *#0808# as well. Ihttp://forum.xda-developers.com/showthread.php?t=2370466

I even tried the older *#7284# with the same result.
 
dratsablive
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I'm having a similar issue with some USSD Codes. I can access *#*#4636#*#* but not *#7284# or many other USSD codes.

I have the I9505G running Android 4.4.2. It's rooted and unlocked. I installed the phoneutil.apk, but I think it's not working properly in the latest KitKat.
 
ruidh
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I did get the LTE bands working with a new SIM. Apparently mine was so old that it only supported 3G.
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i9505 qpst aws t-mobile lte
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