https://community.three.co.uk/t5/Broadband/MC888-stalling-on-download/m-p/68067#M10843 <P>Hi,&nbsp;I have had a ZTE MC888 5G router for 18 months, in a fringe 5G area. Careful positioning gets me 5G most of the time, so I was happy to get the faster speeds for 90% of the time, putting up with 4G for some of the time.<BR />However, for the past few weeks I have only been able to get 4G, and there's a strange 'stalling' of downloading speed, down to 0kb/s for up to 30 second or so every couple of minutes.<BR />If I put the same SIM card in my previous Huawei B535 4G router it is stable and works well, though obviously only on 4G.<BR />So, in trying to find out why the MC888 was playing up, I eventually forced it to select "4G Only" in the Network Selection, which made the 4G stable.<BR />If I change it back to 4G/5G, it starts stalling again, though it always appears to stay on 4G.<BR />While it is doing this the upload is fine, according to the web interface.<BR />If I set up a ping -t to <A href="http://www.google.com" target="_blank">www.google.com</A>, it shows timeouts every couple of minutes for about 30 seconds, as it had shown on the web interface.<BR />I'm pretty sure it's the MC888 at fault, but can't get support to see that - they are blaming poor signal, saying I shouldn't try to use 5G as I am in a fringe area.<BR />Does anyone have any suggestions?<BR />Software update is at B9, by the way, and factory reset doesn't help.<BR />Thanks.</P> Thu, 16 Apr 2026 19:28:38 GMT RMS1 2026-04-16T19:28:38Z https://community.three.co.uk/t5/Broadband/MC888-stalling-on-download/m-p/68067#M10843 <P>Hi,&nbsp;I have had a ZTE MC888 5G router for 18 months, in a fringe 5G area. Careful positioning gets me 5G most of the time, so I was happy to get the faster speeds for 90% of the time, putting up with 4G for some of the time.<BR />However, for the past few weeks I have only been able to get 4G, and there's a strange 'stalling' of downloading speed, down to 0kb/s for up to 30 second or so every couple of minutes.<BR />If I put the same SIM card in my previous Huawei B535 4G router it is stable and works well, though obviously only on 4G.<BR />So, in trying to find out why the MC888 was playing up, I eventually forced it to select "4G Only" in the Network Selection, which made the 4G stable.<BR />If I change it back to 4G/5G, it starts stalling again, though it always appears to stay on 4G.<BR />While it is doing this the upload is fine, according to the web interface.<BR />If I set up a ping -t to <A href="http://www.google.com" target="_blank">www.google.com</A>, it shows timeouts every couple of minutes for about 30 seconds, as it had shown on the web interface.<BR />I'm pretty sure it's the MC888 at fault, but can't get support to see that - they are blaming poor signal, saying I shouldn't try to use 5G as I am in a fringe area.<BR />Does anyone have any suggestions?<BR />Software update is at B9, by the way, and factory reset doesn't help.<BR />Thanks.</P> Thu, 16 Apr 2026 19:28:38 GMT https://community.three.co.uk/t5/Broadband/MC888-stalling-on-download/m-p/68067#M10843 RMS1 2026-04-16T19:28:38Z