Оригинальный сообщение: Roberto Arzate ,
If your Samsung Galaxy Tab 4 is not detecting its SIM card, you will not have access to its associated mobile network. This may be the result of faulty software, hardware, or even a faulty SIM card. Usually, the problem is due to debris in the SIM card port, or wear and tear on the SIM card itself. To diagnose the problem, take a look at the [[Samsung Galaxy Tab 4 7.0 Sprint Troubleshooting|Samsung Galaxy Tab 4 7.0 Sprint Troubleshooting]] guide.