indoor usually 1/2 to 3/4 bar and when check using network signal guru its show band 3..my neighbor using b618-65d and he said can get 10-15mb only..so right now i think its wasted to buy b618 only get that 10-15mb..do u have any recommendation for cheaper router for me?

that one i'm not sure. i only know seller can do that.. program edit. can ahem bypass hotspot together.
indoor signal seem weak leh 1/2 bar. modem sure can get better coverage. no worried la... b618-65d can sell in secs if u dont want to keep it. others modem abit hard to resell same value or higher.
haha..shopee 659? that one also is TMset la..... warranty is same all, direct huawei 1yr.... lol...    

if there a valid original retial seller, is around 1k+ for this modem. others who sales lower than that all are telco set. 65d tm set, 22d celcom set... u cant find else where cheaper available in market.