Boron Vodafone Connectivity Issues in London

Currently I have 3 Borons connected via cellular 2G/3G in London and 2 of the devices are connected to O2 and 1 is connected to Vodafone. The software level/firmware on all 3 devices are the same however the device that is connected to Vodafone always seems to lose connectivity very frequently. Sometimes for 10mins or sometimes over 30mins, but eventually comes back.

To troubleshoot further is there a way I can force the device to use the O2 cellular network.

Can you please DM me the device IDs? I’ll take a look.