Sim card not detected, play store not running after flash


Jun 14, 2019
Hi, I have just flashed 12.5.1 stable, from MIUI 12.1 20.9.4 beta, following a number of anomalies after activating ultra-saving mode (Google sync problem and non functioning play store). My difficulty is that the SIM card is not detected, as if the were nothing in the slot, accounts does not show and play store is not running currently but it's not force-closing either or sending error popups. Previously it was rooted but I haven't yet rooted it again, due to these errors.
Any ideas?
Thanks in advance