Summary :
 For complaint area is poor coverage because far from site more than 3 km and have location is shadow area and data card can’t support 3G850. (1800/2100).
Short term : Propose adjust E-Tilt for U21-UBN0134-C & UBN0174-B from 4 to 2.
Long term : Propose new site not plan at 14.423100, 105.185000(Share with AIS = U21-Northeast4956).