No it not supported 4+ (4G aggregation) Dear Customer, Galaxy M51 supports 2G GSM, 3G WCDMA, 4G LTE FDD, 4G LTE TDD network connectivity. Hope this is of help. Regards, Samsung India####[['4G aggregation', 'Signal#Signal of Mobile Network', 'negative'], ['2G GSM', 'Signal#Signal of Mobile Network', 'positive'], ['3G WCDMA', 'Signal#Signal of Mobile Network', 'positive'], ['4G LTE FDD', 'Signal#Signal of Mobile Network', 'positive'], ['4G LTE TDD network connectivity', 'Signal#Signal of Mobile Network', 'positive']]