QUOTE(joshhd @ Oct 6 2019, 12:26 AM)
When you force 4G/3G that way, do double check that you're still able to make/receive phone calls.
1-2 signal bars is consider quite poor already, and that could be the reason your phone fall back to 3G. Yet, you mentioned that it'll disappear as well, which somehow shows that the network is unstable in your area.
Your phone supports 2300MHz Band 40 and 850MHz Band 5, but doesn't support Band 38 2600MHz.
Well, if
so happen Unifi Mobile's coverage is good in your area, but only on Band 38 2600MHz frequency band, and not so well perform on other bands, then too bad for you lo... Try look for your family or friend's phone models that supports all 3 bands, then do all the network tests, like monitor signal bar/readings, speed tests, video streaming and web browsing, etc. Then at least you'll know the root cause of poor network performance comes from where.
My advise, give up and move on to other telco.

I forgot to mention that my phone only support band 5. The thing is I just move to this place, and no Streamyx or Unifi. So far, here are my options with pro and con;
1) Unifi Air
Pro: 79/ month. Kinda fast for daily usage compare to my wife's Maxis hotspot although Speedtest not as good as Maxis. Now I'm typing this from the hotspot too.
Con: Still unsure of the signal strength. I was hoping B618 65D will improve this and poor signal is cause by my phone.
2) Celcom
Pro: Proven good coverage, although Speedtest is more or less with UA. Somehow there's glimpse of hope for the 50Gb because of the Video and Music Walla.
Con: At the same time, I'm afraid that 50GB is not enough for us all while 150GB, RM150/ month cost me two month of UA. I think my sweet spot is 100GB. Plus very congested Celcom broadband coverage here according to the CS but excellent 4G coverage. He said the 4G for these two is different, and I really hope this is marketing only.
3) Yoodo
Pro: Only Rm98/ month for 100GB data only, interesting add-on.
Con: I wonder if I can use mobile sim data as wireless broadband with B618 as a router?
4) Maxis
Pro: Excellent 4G coverage, good Speedtest, aceptable speed and more stable than UA at least.
Con: The official broadband is very expensive compared to Celcom. I notice got unlimited data and hotspot for rent 130/ month but is it usable in a router and Rm130/ month is a tad cheaper than 150GB Celcom.
While I do realized that Speedtest doesn't reflect the real world, what bother me is the consumption for whole household. So far parents only use for Whatsapp and Youtube, wife more on social media and online K drama while me planning to connect smart TV to the internet, downloading series, movies, and sometimes app. Hmmm... Confused.