Analysis : Customer always use service from U21-CMI0208-A, Huawei Honor 3C H30-U10 support 3G2100 only. For DNA checking speedtest of customer are 13Mbps on 25/05/2016.
Short term Solution: Suggest Customer to change UE for support LTE and 3G850.
Long term Solution: Propose New site หมู่บ้านศิริพรการ์เด้นโฮม at 18.841868, 99.055119