Why won't my iPhone retain my login?

[Backingvocals]

I've ticked 'keep me logged in' and I've saved the password on that thing in settings which is supposed to help (according to my friend in IT). But I can only stay on one page in MN. If I open in a new tab the login has gone. Or if I close MN.

All fine in the laptop so it's my iPhone. How do I fix this?

[BeccaMumsnet]

Hi Backingvocals - perhaps cookies are blocked on your iPhone? Or are you using "private browsing"?

[Backingvocals]

Sorry I'm not very IT literate so don't know - how could I check? Thanks!

[Twooter]

I put my iPhone on private once - it did the same thing. Is the bar at the bottom of the screen dark grey/ black - that would suggest it's on private.