I guess there are not so bad.

Cannot really direct compare with a CPE. But AC790s is impressive.
Before i used it, i always thought mifi may not stable, heat issue, and battery problem. But it totally different what i thought. It is very stable, no heat at all, and can use without battery. But i cannot compare the performance with huawei CPE because i don't have it.
For sure, the wifi range is a weakness, but i use another xiaomi router, flashed rooter firmware. Much advance function that unbeatable by any cheap home router or CPE.
The only weakness is it cannot support phone call.
But the price is cheap, 790s rm280 + mi router rm100.
Overall, i super satisfied with AC790s. Just digi a bit disappointed me.

I didn't use any vpn. I am using debrid.

Taobao.

The modem comes with ipv6.
BUT, i have trouble to do port forward with ipv6.
If i use the mifi, the local ip is ipv4.
If i use router, i found no way to bridge it as ipv6. So far i still have no solution for this issue.
But heat is never an issue. The first 2 days when i got the modem, i downloaded 100gb without any problem. The temperature is stable, almost no increase.

The first one.
But my issue is more like

Mifi (IPv4) > Router (IPv6). The mifi won't assign IPv6 to router.
I was using usb tethering method, mean direct usb plug into router.
I switched the protocol to some other IPv6 setting, but no connection. Only work with Dymanic IPv4.

The second method is a no for me, i am not a fans of repeater, i feel it caused more unstable and increase ping. So i didn't try it.

So for those want using IPv6, i suggest CPE unit for less issue.

The mifi is supporting ipv6.
I direct connect it with wifi, i can use it.
But when using usb tethering with router, it is not.

This is more like congested.

Check your RSRQ.
Congested will have higher amount. Probably more than 10db

Actually i got a problem like this:
My phone using 5ghz wifi, speedtest 20m.
My tab using 2.4ghz wifi, speedtest 5m.
My laptop using LAN cable, speedtest 10m.
I don't know is it under traffic shaping or just hardware problem.
(All test during super peak hour 8-10pm).

I suspect traffic shaping because it only happen during super peak hour. Normal time usually all of devices are same high speed.
And if it is hardware problem, Lan should not limited to 10m only. That's why it is weird.

I am using Mi mini, much better combo, and super cheap price.
RM93 for the router only (from lazada + shopback + voucher code + credit card rebate )

1. Openwrt has much advanced enterprise grade router's functions.
2. It has better CPU & memory, better performance to handle higher speed & more devices.
3. Better coverage.
4. Stable and durable.

And i personally like modem + router, more than a mifi.

LOL, why this topic again?
A tower can support hundreds or even thousands of users. It won't conngested just by one or few heavy users. Even before unlimited plan, every telco are also facing congested issue, what do you say about this? Advise user who has 5gb plan use only 2gb, and tolerence with other users?

This is totally not the customer problem. Why the customers want to limited by the weakness of the provider? If they do not afford to provide unlimited quota, don't provide it, as customer, i appreciate they do, but i didn't force them. This is an open market, digi provide the plan because market want it, and we pay what digi can afford to us.

Since issues come out, the persons need to take care and responsible are the telco themselves, not customers. Many things they can do like: upgrade the towers, traffic control during peak & congested hour, caching popular contents like facebook, youtube, blocking illegal contents. The worst, if these are not the solutions, stop over-sell the plan. Do some market survey and also their hardware capabilities. When a tower only support 10000 users, warn the registration if it reach 8000. Do let users know they may face congestion issue if they take the plan.

And recommend other users to use 200gb per month, for unlimited(or at least 1tb) plan is funny. For example, shopping centre's parking is full during weekend. I recommend you park only 2 hours, to make it fair and tolerence to other driver who cannot find parking. I guess you will think i am crazy.

Believe me, you (or us) won't change anything to digi. Stop making some ridiculous sugguestions. As a telco & business owner, digi will try their best to utilise their network. You know why digi keep extending the i150, because they think they are not yet utilising it yet.
Even all the users follow your suggestions, reduces the usage, digi will thanks to you, they allowed to sell their bandwidth to more users without upgrading it.

I will not further comment this issue, and let digi to handle it themselves.

Modem doesn't show 4G+.
But telnet it can see both connected tower in detail.

A program which can remote connect into another device by using dos command. And it looks like this.

No wonder my speed improved these few days, my B3 changed to 15mhz. Ipoh area.

My modem show it.
USB modem can see from rooter firmware.
AC790s by telnet AT command.

Very love this modem.
So far only downside found is, 5ghz wifi will be very consuming battery and uncomfortable heat.
And something bad is, my area has problem to connect 4g+ during peak hour.
But great is, with the 15mhz b3, it alone can reach to 80m, and 4g+ can reach 145m max now, out of 180m digi max speed.