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[Q] Is there a way to unlock the 900 mHz UMTS frequency on SGH-I337?

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By sirobelec, Senior Member on 6th May 2014, 04:51 PM
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I'm in Europe, and from simple direct testing (GT-I9505 vs SGH-I337), both in the same place (away from a big city and inside a moving train), running the same carrier, I found that the GT-I9505 had absolutely no problem running HSDPA+ speeds, whereas my SGH-I337 got up to EDGE... if I was lucky.
Inside a city there's no problem seeing that lovely H+ logo on my status bar, but anywhere else I went - nothing above EDGE.

Digging further, I learned that most of Europe (including my carrier) uses the UMTS at 900 mHz frequency for H+ data speeds, and digging more, I found that the aforementioned SGH-I337 doesn't include that particular frequency at all.

The international S4 has that frequency, even T-Mobile's version has that frequency, but not the particularly nastily locked SGH-I337 (let's not mention that damned locked bootloader).

Does my phone even have the hardware capabilities to turn on that particular UMTS frequency, and if yes, how do I unlock it? - this method unlocks AWS (I enabled AWS, haven't tested it yet).

Edit (even before posting): - following this post, I dialed *#2263# and that menu opened. In the WCDMA section there's WCDMA 900 - will it work for my specific situation?

I guess the mods will delete this thread, but have to ask, anyway.
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