Symptoms

1. slow updates and/or downloads in iOS App Store (all devices)
2. updates would sometimes be stuck at 'Waiting'
3. browsing, YouTube and others are just fine
4. desktop/laptop speed is unaffected
5. Android devices are unaffected

Actions taken by forumers

1. called TM (100)
2. wrote on their Twitter channel @TMConnects

Response from TM


Temporary Solutions

1. change your DNS (8.8.8.8 or any other country)
2. use VPN
3. use mobile data (3G or 4G/LTE)
4. use other ISP (Maxis Fibre, YES 4G, etc)
5. download during these times; 3am-10am and 3pm-6pm. these are the time slots that some forumers and i have determined to have normal speeds, especially the morning window

I'm facing this also, apps wont update/download via wifi (Unifi). Its working on LTE (Maxis).

Unifi problem maybe?

I'm trying it right now on Unifi. Apps can download, but it's dog slow, for some reason. I suspect it's a mirroring problem of some sort. Maybe a combination of Unifi and App Store both having problems. Wait a few hours and see. My issues seem different from yours though - both wifi and 4G (Celcom) are really slow for me. Maybe different because my iTunes account is a US one. Dunno. Another strange thing is that App Store pages and videos seem to load quite fast. Only the actual app downloads seem extremely slow for me, whatever the connection type.

Facing the same issue here intermittently since 2 weeks ago 

Using Iphone 5 (IOS 7) on Unifi30 and I literally cannot update any of my apps through wifi because it's super slow. Similarly, the way I can get a quick update done is through 3G/LTE

I suspect the problem is coming from TM's side because I am still getting full speed using speedtest app and having no issues loading 1080p video on my phone or loading high bandwidth web pages

Firstly, checking Apple's System Status webpage is useless. Apple, in their usual arrogant nature, will only  update the page AFTER the usual online publications (9to5mac, TheNextWeb, iMore, ArsTechnica, etc) report the issue, or if they scheduled the maintenance themselves. They never willingly admit to unscheduled downtime or problems. Secondly, I don't think it's a Unifi issue specifically, but more of a mirroring issue with a certain list of IPs for our country/region. For me, Celcom 4G also having slow app downloads, so maybe Celcom happens to be in that affected IP range as well (unlike Maxis or Digi, which you say is working fine). I don't know if other Unifi people are affected or not, since only the few of us have posted on this thread.

I think we can rule out DNS issue. I tried Google DNS, OpenDNS and DyDNS. All the same. Still slow. 58.5MB update for Dropbox taking more than 30 minutes. Feels like I'm back on 56k dial-up modem days. Never tried TM default DNS, because I prefer my local news uncensored.

Same shit happened to me and my friend as well. I'm on UNIFI50. Why don't we all call TM to make complaints together? I'm calling them today.

LOL, can believe it's true. I'm trying to update my Apps on my Unifi right now, it's epic slow LOL

Hmm what happen to network >.<

@jin_akira
I'm no network guru either. The simple layman explanation is - imagine the server where the various apps are kept. Now if there's one single server for the whole world, it's gonna get choked right? Hence the term "mirror", which is just a way of saying companies that serve worldwide have various servers dedicated to different regions, and in many cases, various servers dedicated to specific IP ranges in those regions. For example Youtube - you know how some videos load very fast while some take a long time to buffer, that's because of where the mirrors are and what videos are on them. For example, if the video you want is stored in a local mirror (server), it'll load faster than a video stored on a mirror that's further away. Youtube will pick out the best possible mirror for us, based on factors like distance, traffic, latency, blah-blah. Right now, it's possible that, with regards to the App Store, the servers dedicated to our location or IP ranges just aren't performing optimally, for whatever reason Maybe. All conjencture on my part.

Could also be a Unifi issue, where there's some problem between them and apple's servers. I dunno. I can torrent and surf and do everything else at normal speed. Even watching the App demo videos on the App Store works fine and fast. Only the apps, whether updating existing apps or downloading new apps. Just now I looked for the smallest apps I could find, and even a 1MB file took almost an entire minute. Who knows what's wrong. Malaysia anything also possible... anything bad, I mean.

Coincidentally, iOS 8.4.1 got released a few hours ago and I downloaded it at normal speed - downloaded in less than 2 minutes, even the install and reboot process took longer than the time to download the 8.4.1 update, ffs. It's only the apps and books that are slow (maybe music also, but I didn't try those).

Give up for today. Later I'll sign out and do a hard reset and try signing back in again. If that doesn't work then I'll just wait and see.

Do let us know the result

Strange no one has report this issue prior to you creating this thread, I mean it can't be just the 9 of us here facing this problem lol

I'm pretty sure there are other Unifi users out there in a similar situation as well.

I'll try to call TM up tomorrow, if the customer service is on duty or maybe just let them know in the nearest TM Point Centre

I also facing same problem LTE working fine but Unifi very slow.
I try all solution from google, change wireless to G, reset wireless network etc but still the same.

I notice after I upgrade to UNIFI 30mbps only got this problem, seems like something wrong combine itune with Unifi as others I can get full speed.

same here... but would like to know if this problem only happen on certain iphone model or all are affected... Mine is iphone 6 64gb...

Yesterday night both my iPhone 6 and my mum's iPhone 5 were affected. It's a connection issue, I'm sure. What kind of connection issue, nobody knows.
I dunno, I wasn't affected until yesterday (when I checked just after reading your opening post). Before that maybe there were some days that were slower than others, but never this bad. I would have noticed because I disable automatic downloads/updates (after Apple forced that shitty U2 album on me) and check manually every few days. My update list shows the last day I updated before yesterday was 12th Aug, and I in J.B that day on Unifi and remember it being normal speeds. Obviously I don't take note of every single day (I spend half the week in Singapore with a 1GBps connection there), but I don't remember experiencing such terrible App Store or iTunes download speeds on Unifi in the last 2 years.

I'm now back in Singapore (J.B is my mum's house) so cannot follow up any further until next week, but here's what I found so far;

From what I've narrowed down, it affects certain IP ranges, and within those affected, some are worse than others. Earlier today I tried disconnecting and reconnecting (via router settings) the connection to switch the IP range. I noticed that with some IPs like 175.x.x.x (Johor Bahru) and 60.x.x.x (Kota Tinggi) the download speeds were a bit faster. Still not the usual speed, but maybe 1/4 speed or so - can download around 20MB app in around 2 minutes. With some of the K.L, Negeri and Selangor IPs, the speed was horrible - either stuck waiting or the circle filled very, very slowly, not even 1MB in 1 minute. I suspect, based on the map I linked in my previous post, that maybe Penang or Sabah IPs will be even faster, since the yellow highlights on the map only appear over Selangor, Negeri, Malacca and Johor areas.  Kinda hard to get those IP ranges for me though - disconnect/connect more than 30 times also couldn't get Penang or Sabah IP.  I ran out of time and had to come back to Singapore, so couldn't try any more. Maybe one of you can try it out and post your findings.

* The connection in my mum's house is Unifi10. Not sure if the same IP ranges are available for Unifi30 and above. If you got static IP then you're probably screwed.

Crap, it's getting worse; https://downdetector.com/status/itunes/map/
In the morning, it was only light patches of yellow. Now it's a big round blob over the Selangor state. >_<

First, you must confirm if your Unifi package provides static or dynamic IP. Dynamic IP basically means your IP address changes each time you connect, while a static IP is an IP address reserved exclusively for you.  I think most of the residential Unifi connections are dynamic, while static is reserved for business packages, but you have to confirm yourself. I'm not sure how the new 30 and 50 mbps packages work with regards to this.

If you want to try, well, it differs depending on your router type. It's easier on a PC or laptop compared to a phone, since there will be a lot of switching tabs back and forth. Go to your router control/admin page (the router IP you key into your browser). There you should have a section for Status or Network or something similar named, where you have your WAN settings listed - IP address, DNS, Subnet Mask, etc etc. There you should have a button to disconnect and reconnect your connection. Each time you dis/reconnect, your IP will change (if it doesn't change, then you have a static IP address). Open another browser tab for this page - https://www.iplocation.net/find-ip-address - to see the host location. So each time you disconnect and reconnect and the IP address changes, refresh that tab to see where the host location is. Take notes if possible, and try downloading from the App Store after changing IP each time. From my limited testing earlier, All the Selangor IPs are gone. Cannot even start download. One IP range, starting with 60. for somewhere in Johor was the best I found before I had to leave. Note that switching to a state further from your location might induce slightly higher latency, but you won't notice it unless maybe with fast FPS games or something. Download speeds for other websites should be similar, though I suppose you'll need to test yourself. Need patience, and a bit of luck. My advice, if the IP host listed as anywhere in Selangor state (KL, Cheras, Shah Alam, etc) don't bother to go to the App Store. Save some time. Once you see an IP that says Johor or Negeri or Penang, then you do a speed-test to check the speed, then go to phone and try downloading/updating.