Wifi keeps dropping out and disconnecting

[Ray1968Ray]

I have fiber150 and to be honest our old sky wifi was better before I upgraded. 
the connection keeps dropping out on our phones and tv. 
the old hub was located in a closet by an engineer and the new Fiber150 system is also located here. The engineer says this is fine. When I check / test the system on Mysky App it says all is good but every my wife or I use our phones the signal drops out everything few minutes. This is not acceptable. I want this resolved asap. 

[JimM1]

@Ray1968Ray Do you still have the same hub as before the Fibre upgrade, or did you change that at the same time!

[Ray1968Ray]

No I got a new hub with this supposedly all singing dancing package. Do you think it is a dud hub?

[JimM1]

@Ray1968Ray Will not be dud i would think, do you still have the Black Upright SR203 same style that you have just now!

https://www.sky.com/help/articles/set-up-hub-which-sky-hub-do-you-have

[Ray1968Ray]

No new model is SR213. Sent the old black one back as requested by sky🙄

[JimM1]

@Ray1968Ray Only suggestion left to you now, since you sent the old one back, is get a longer cat5e or above cable and get the SR213 hub out off the cupboard and have the wireless signal a chance to get about, do you think that is possible to do!

[Ray1968Ray]

No new model is SR213. Sent the old black one back as requested by sky