This is the Blu G51 Lite user manual in English provided by the manufacture
BLU G51 lite manual & Review – The BLU G51 lite (FCC ID: YHLBLUG51LITE) has just shown up in FCC filings, which could indicate an imminent launch.
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BLU G51 lite Frequency Bands and Network Compatibility
As per the FCC documents, the Blu G51 Lite is a 4G capable smartphone., It supports LTE Bands B2/B4/B5/B7/B12/B38, WCDMA 2/4/5, GSM, Wi-Fi, Bluetooth!