Here is my experience with the S7:
I have no problems getting HSDPA to work where I live. I just put the SIM in, added my APN info, rebooted the tablet, and it worked.
However, I cannot get any AT&T service to work outside of the area where I normally live. Basically, if it's a physical area that is not associated with the 607 area code (the area code associated with my AT&T account), I get bars shown but:
No data service. Any attempt to fill in APN info fails (no errors, just doesn't actually show in the APN list after I save)
No phone service. Attempting to make a call hangs the tablet - gotta yank the battery
Attempting to do a provider search results in a timeout - This particular function gives me three results (AT&T 2G, AT&T 3G, and T-Mobile 2G) when I have no SIM installed
Attempting to view radio logs using adb logcat or Android System Info shows a bunch of "Wrong network type: 0" errors. Unfortunately, while I did save a log of the tablet "working" at home, I saved it on a different machine.
Using this AT&T SIM works fine when inserted into my AT&T Tilt 2 - I have a nice solid HSDPA signal here where I'm sitting in New Jersey, same for my business trip to Long Island last month.
I have no problems getting HSDPA to work where I live. I just put the SIM in, added my APN info, rebooted the tablet, and it worked.
However, I cannot get any AT&T service to work outside of the area where I normally live. Basically, if it's a physical area that is not associated with the 607 area code (the area code associated with my AT&T account), I get bars shown but:
No data service. Any attempt to fill in APN info fails (no errors, just doesn't actually show in the APN list after I save)
No phone service. Attempting to make a call hangs the tablet - gotta yank the battery
Attempting to do a provider search results in a timeout - This particular function gives me three results (AT&T 2G, AT&T 3G, and T-Mobile 2G) when I have no SIM installed
Attempting to view radio logs using adb logcat or Android System Info shows a bunch of "Wrong network type: 0" errors. Unfortunately, while I did save a log of the tablet "working" at home, I saved it on a different machine.
Using this AT&T SIM works fine when inserted into my AT&T Tilt 2 - I have a nice solid HSDPA signal here where I'm sitting in New Jersey, same for my business trip to Long Island last month.