Why does my Galaxy S4 Mini keep losing home wifi?

A

AC Question

Galaxy S4 Mini keeps losing home wifi

Problem with Samsung Galaxy S4 Mini linking to Plusnet Router. Mobile finds router and connects and then disconnects and cannot see the router at all. My laptop has a maximum connection to the same router. When I delete the router id on the mobile and scan, the router reappears and I go through the same cycle again. I have been happily connecting the mobile to the router for months until 2/3 days ago.

Plusnet suggested interference problem, so I tried 3 different chanels with the same result.

Help!
 

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