Default Tethering 4G LTE from Galaxy S4?

Hello, I have the S4 with MetroPCS (m919n, should be the exact same phone as T-Mobile) and I have unlimited LTE. I was hoping to tether it to my tablet but I can't figure out how to enable tethering.

Can anyone direct me to a patch or app to do it, or if there is manual framework editing I need to do, directions?

Thanks!

Master Ramy

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