Phone losing its colour

[Hotruth]

Hi my phone us losing its colour. It flicks to black and white too.  It looks like the colour has faded. I've checked grey screen in settings and that's not on. So I think my phone is faulty. Can you please help 

[Enlli]

Hard to advise not knowing make and model.

I find doing a Google search for your phone and it's symptoms often brings up good advice

[Cleoriff]

Also @Hotruth, If the phone is still within warranty, I would be contacting the manufacturer (Not O2) for advice and support.

[Oxonian]

@Hotruth 

If you bought the handset from a retailer - Amazon, Currys, Argos, QVC etc - within the last twelve months, you should also consider logging the fault with the retailer. Ultimately, the legislation makes them responsible as they sold the item to you. 

I would also pursue the retailer if you are a little bit outside of the guarantee. If you have paid several hundred pounds for a handset, it is not fit for purpose if it develops a fault in year two. Hence, many retailers will try to compromise with you.