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Old October 17th, 2012, 12:05 AM   #1 (permalink)
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Sad Unlocked ATT SGH-I777 now w/ T-Mobile

Which ROOT guide do I follow if I have this type of phone? The original ATT Samsung SGH-I777 GS2 guide?

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Old October 17th, 2012, 10:16 AM   #2 (permalink)
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If the phone model is i777 then you root according to the AT&T guide. If you flash a rom, you may need to manually set the APN settings for t-mobile, but otherwise you just insert your sim. BTW, you do know that this model is not entirely compatible with T-Mobile's network? You'll never get 3G/4G because it operates at a different frequency. You'll only get 2/G EDGE data speeds.
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Old December 9th, 2013, 06:53 PM   #3 (permalink)
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Thumbs up sgh-i777 on tmobile getting 4g

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Originally Posted by lunatic59 View Post
If the phone model is i777 then you root according to the AT&T guide. If you flash a rom, you may need to manually set the APN settings for t-mobile, but otherwise you just insert your sim. BTW, you do know that this model is not entirely compatible with T-Mobile's network? You'll never get 3G/4G because it operates at a different frequency. You'll only get 2/G EDGE data speeds.
untrue. i currently have unlocked sgh-i777 on tmobile and recieve 4g speeds in some areas. i think maybe a radio flash to tmobile will assist in better signal quality. ive heard only skyrocket will support, maybe there is a skyrocket version? i may try one of these radios and get back on better 4g coverage or not.
going to update to 4.1.2 first though
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Old December 9th, 2013, 06:53 PM   #4 (permalink)
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[MOD] Using Skyrocket on T-mobile/AWS Bands - xda-developers

here is the link for the radios if anyone else would like to try
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Old December 9th, 2013, 07:18 PM   #5 (permalink)
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[MOD] Using Skyrocket on T-mobile/AWS Bands - xda-developers

here is the link for the radios if anyone else would like to try
correction on this, reading on in the forum it looks like sgh i9100 modems may work better. ill keep you all posted
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Old December 9th, 2013, 07:41 PM   #6 (permalink)
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untrue. i currently have unlocked sgh-i777 on tmobile and recieve 4g speeds in some areas. i think maybe a radio flash to tmobile will assist in better signal quality. ive heard only skyrocket will support, maybe there is a skyrocket version? i may try one of these radios and get back on better 4g coverage or not.
going to update to 4.1.2 first though
It was true, but T-Mobile has begun supporting standard international frequency bands, so not you can get the higher speeds.
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Old December 10th, 2013, 11:16 AM   #7 (permalink)
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It was true, but T-Mobile has begun supporting standard international frequency bands, so not you can get the higher speeds.
Ah I see. Maybe a radio flash will help with the newer international frequencies?
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