I am also using MB 128 Postpaid, using the same Huawei E173 modem.

Also getting very poor speed AGAIN. 0.83 mbps dl and 0.26 mbps ul, tested at 9.50 pm. Johor Bahru.

Complained to U Mobile several times about 6 months ago and they replied with "can't find anything wrong". Only after I complained to consumerinfo.my did U Mobile start paying attention. After a long series of complaints, finally it was fixed for a few months, I got decent speed of about 3-4 mb dl even during peak.
They keep trying to get new subscribers but don't improve their infrastructure. They somewhat admitted to it when the Customer Service replied to my emails, telling me they were going to build a new station near my area, but no confirmed date.

Now, the speed is crawling again. Been using U Mobile for more than a year, but now I give up! Thinking of switching to Yes 4G Postpaid as there is no plan. Anyone know if Yes 4G is fast/reliable?

Can't get Unifi as my street has low demand and TM refuses to pull the cable to my street. P1 can get it done but costs 300 I think.

It seems no matter which modem, U Mobile has poor upload speed.

When my connection was slow, ul speed was about 0.3 mbps, putting attachments in emails took AGES. Really frustrating. The 1.5 mb "normal" upload speed is ok for sending photos, but what if I need to send large files? Will take forever.

I don't think YES allows a trial period, asked their staff before. Anyway it can't be any worse than U Mobile now. The only thing is that I would need to manage my usage since it is 6 gb peak and 15 gb off peak. However the 2am-8am restriction is too limiting! I wish they'd extend it to 12 midnight. That's one thing good about U Mobile MB128, 20 gb with no time restriction, however with the shitty speed during the peak hours, I am also facing a restriction of sorts, so might as well switch!

About the extra 5gb from 2am-8am (only for RM68 post/pre-paid), did you send a SMS to subscribe for the extra 5 gb? If you just started using either the 68 post/pre-paid recently, it should be automatic. If you are an older customer you need to send "SUPER" to 28118 via SMS according to their website. I think the U Mobile Broadband Manager can do that.

Also switched to YES 4G from U Mobile just 2 days ago. Using the 109 Postpaid with no contract, so that I can switch out if Unifi/ABN ever finally decides to pull cables to my street. Been waiting for 2 years and applied many times.

Good speed, only complaint is that the "off-peak" hours are way too restrictive. I mean, 2 am to 8 am? I have to stay up to watch videos, download etc.

Yeah, I was very disappointed with U Mobile in the past 6 months. When I first started using it over a year ago, the speed was pretty consistent and the connection steady. After U Mobile signed the network sharing agreement with Maxis, my experience was all the way downhill....hence I went to their service center to cancel my line. 2 other people were there to do the same too. The staff don't even ask me why, I complained so many times already. Email their customer support doesn't help too.

Switched to YES 4G, its peak hours usage is expensive compared to U Mobile (98 for 6GB), but I got the 109 one which is 6GB peak and 15GB from 2am-8am. So I just do my downloads at 2am and auto-shutdown. Can get up to 12mb download during peak, so pretty satisfied. Just that I have to be careful in rationing usage.