lG lancet GSM band unlocking.

Hi guys new to the site, i was wondering if they were guides or so forth to get the LG lancet (Android 5.1) to unlock its GSM bands primarily i need these
Digicel: GSM 900/1800 MHZ, UMTS 900 MHZ

Lime: GSM 850/1900 MHZ, UMTS 850/1900 MHZ

Any advice or guides will be appreciated thank you.

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