Chosen Solution

bit of a long shot ,,,, i had an sony xa ……. an app would’nt work on it called Strava ,so i reverted to my sony z2 ,,,, since the replacement sim has gone in , i cant use the phone for anything , weather app just opens up by its self ,, pics in the gallery just do what they want ,,,, the screen constantly moves apps open up all the time i just can use the phone ………. any ideas please?

Sounds very much like a faulty digitiser, you can follow this guide to installing a new one, Replacement Part here Hope this helps