Orange Monte Carlo - insert sim card error

[Guest L Eckstein]

hi everyone,

im look for some advice / or a solution to my problem.

ive had my monte caro from launch no problems at all, but lately its started coming up saying insert sim card, even though theirs one in their, this is random as it will be working fine, then kick it out, then start working again fine

it annoying as it can not work for 10 mins to 6 hours then be fine again

[Guest hugobosslives]

have you tried cleaning the contacts?

EDIT: as in the metal pins under the card (not your phone numbers :D)