I have posed this question on another thread & it immediately came up as solved which it hasn't been even after following the "solution". So here goes again:
I have the same prob with iphone 5s. Wrong user name or password but know that they are correct. Fed up with resetting according to user guide of talktalk, tesco mobile & iphone. Can send emails but not receive on iphone although they get through to same account on computer. Help please.