I know there are a lot of threads about this, but all of them seem to end with people wondering if there's any solution, or a conclusion to the problem. At this point it seems all this is clear as mud and therefore I'll try to give you all a final answer on how this goes down.
The Bell SGS2 i757M "HD LTE" or "Skyrocket HD" indeed can be used with AWS bands on 3G network. I have been trying for a while to get it to work on Wind Mobile. However it does not work 100%. Data and text messaging work perfectly. However the calls are very dodgy, and it gets better or worse depending on which radio you use. You can hear the person on the other end perfectly fine, however the person on the other end will get very bad quality sound coming from you. AFAIK there is no way around this. If you call people a lot best just to get a different phone.
Here is a conclusion of my trying of pretty much every AWS-enabling radio out there that people have said to try with the i757M. All of which were tested with CM9, however stock ICS would produce pretty much identical results. I tried some radios with stock JB and they didn't work, so for AWS compatibility stick with ICS.
Quality figures compared to what I would usually get with a native AWS compatible phone on Wind, in this case Xperia Ion
-T989D KJ3 (Galaxy S2X GB) - Doesn't work
-T989D TLLE4 (Galaxy S2X ICS) - Data speeds okay, text working, calls work, but takes ~10 secs to connect and start dialing. Bad quality, about ~40%
-T879 UVLG3 (T-Mobile Note 1) - Best data speeds, text working, calls work, connects instantly, but worse sound quality. Barely understandable on the other end.
-T989 ULVE1 (T-Mobile S2 ICS) - Good data speeds, text working, calls work, 3-5 secs connection, still awful sound about 30% quality
-T-mobile Blaze ICS (mod radio for i717 LTE Note1) - Pretty much same as ULVG3
-T769 UMVB1 (Blaze 4G) - Good data speeds, text working, calls work, ~10 secs connection but best quality out of all. Probably around 50% quality. This radio does not work with stock ROMs only CM
-T879 UMVA1 (T-Mobile Note 1) - Almost same results as UMVB1, but with a little bit worse sound quality. but This radio does not work with stock ROMs only CM
-T989 VK1 (T-Mobile S2) - About same as ULVE1
-I757M UGMC5 (Bell stock radio update) - Claims to be AWS compatible but doesn't work
Hope this helps somebody who's looking to use their i757 on AWS wind mobilicity or T-Mobile. If you want best data speeds go for the T879 UVLG3. For call quality use the UMVB1 but it still isn't quality that the person on the other end can live with.
The Bell SGS2 i757M "HD LTE" or "Skyrocket HD" indeed can be used with AWS bands on 3G network. I have been trying for a while to get it to work on Wind Mobile. However it does not work 100%. Data and text messaging work perfectly. However the calls are very dodgy, and it gets better or worse depending on which radio you use. You can hear the person on the other end perfectly fine, however the person on the other end will get very bad quality sound coming from you. AFAIK there is no way around this. If you call people a lot best just to get a different phone.
Here is a conclusion of my trying of pretty much every AWS-enabling radio out there that people have said to try with the i757M. All of which were tested with CM9, however stock ICS would produce pretty much identical results. I tried some radios with stock JB and they didn't work, so for AWS compatibility stick with ICS.
Quality figures compared to what I would usually get with a native AWS compatible phone on Wind, in this case Xperia Ion
-T989D KJ3 (Galaxy S2X GB) - Doesn't work
-T989D TLLE4 (Galaxy S2X ICS) - Data speeds okay, text working, calls work, but takes ~10 secs to connect and start dialing. Bad quality, about ~40%
-T879 UVLG3 (T-Mobile Note 1) - Best data speeds, text working, calls work, connects instantly, but worse sound quality. Barely understandable on the other end.
-T989 ULVE1 (T-Mobile S2 ICS) - Good data speeds, text working, calls work, 3-5 secs connection, still awful sound about 30% quality
-T-mobile Blaze ICS (mod radio for i717 LTE Note1) - Pretty much same as ULVG3
-T769 UMVB1 (Blaze 4G) - Good data speeds, text working, calls work, ~10 secs connection but best quality out of all. Probably around 50% quality. This radio does not work with stock ROMs only CM
-T879 UMVA1 (T-Mobile Note 1) - Almost same results as UMVB1, but with a little bit worse sound quality. but This radio does not work with stock ROMs only CM
-T989 VK1 (T-Mobile S2) - About same as ULVE1
-I757M UGMC5 (Bell stock radio update) - Claims to be AWS compatible but doesn't work
Hope this helps somebody who's looking to use their i757 on AWS wind mobilicity or T-Mobile. If you want best data speeds go for the T879 UVLG3. For call quality use the UMVB1 but it still isn't quality that the person on the other end can live with.
