Why can't flexible employment social security be handed in on mobile phones now?

Dear, if you can't pay, it may generally be the following situations: In the first case, the insured who has reached the statutory retirement age (that is, 55 years old for women and 60 years old for men) but the accumulated payment period of employee pension insurance is still less than 15 years needs to bring his original ID card to the urban management department affiliated to the Municipal Social Security Bureau to voluntarily apply for billing and payment. The second situation is that the unit has stopped insurance, but has not gone through the formalities of changing to flexible employees.