I confirmed with ZTE that the unit has TS9 connectors. I contacted Vodafone and after a long discussion with the tech team, the agent called Hitesh told me that Vodafone do not support or recommend using external antennas with Vodafone products. I am trying a panorama antenna with ts9's. If that does not work I will return the Vodafone Unit and get one from EE. It is a shame that Vodafone have great network and very poor back office staff. The first order was wrongly entered as sim only, when I queried they entered and said they would additionally discount bu that never materialized, They then sent me a unit with a faulty SIM card and support kept telling me it was a fault in my area. Luckily there is still a store locally and they fixed instantly with new SIM. Now I cannot connect external antenna which was reason for Unit. Vodafone service used to be so good.