My ETAB M7023G does not see sim - Cell Phones

If your device does not see a sim when inserted the sim might be to old or can have the wrong watts required for the sim to work, if the sim is more than 5 years old you should check with operator about getting a new sim or go to the store and see if then can check the sim and sim slot, it could also be pin in the sim slot damaged which will cause the sim not to read