Firstly you must check that you have fitted your SIM/SIMs properly in the SIM trays and then check that your device is recognising the SIMs: 1. Go to Settings 2. Select SIM cards 3. If your Network Provider and mobile number are displayed under SIM slot 1; SIM slot 2 or both then enable the slider to the right of each 4. Press return 5. Select More 6. Select Cellular networks 7. Select Network from Top Bar Menu 8. Select “Preferred network type” – ensure that this corresponds to the service type provided in your contract 9. Undertake same procedure for second Network (if 2 SIMs are being used) 10. Power off and restart device It always advisable to reboot your device to refresh network connections. If you are still experiencing problems, ensure that Airplane mode is not activated: 1. Go to Settings 2. Select More 3. Airplane mode – ensure it is in Off position I cannot connect to the Internet or send/receive data on my DEWALT Mobile? Firstly, you must ensure that data is provided as part of your contract with your Network Operator. If it is, then to enable data on your device: 1. Go to Settings 2. Select SIM cards 3. Under “Preferred SIM for” – “Cellular Data” Select your preferred Network SIM for data 4. Press return 5. Select Data usage 6. Select preferred Network from Top Bar Menu 7. Enable Cellular data 8. You can choose to set a data limit in order to receive an alert from your device when reaching your data allowance It always advisable to reboot your device to refresh network connections. If you still cannot receive or send data, then you will have to check/enter the APN’s for your Network manually – these can be obtained from your Network Operator (website normally), and then: 1. Go to Settings 2. Select More 3. Select Cellular networks 4. Select Network from Top Bar Menu 5. Select “Preferred network type” – ensure that this corresponds to the service type provided in your contract 6. Select Access Point Names 7. Press on Network name, this will bring up “Edit access point” – enter Network APN information 8. Press Return 9. Undertake same procedure for second Network (if 2 SIMs are being used) 10. Power off and restart device If there is still no Data connectivity, then you will have to contact your Network Operator to check that there is no problem or suspension of service with your contract.