You have selected
OnePlus 3 - Android Oreo SMS Manual configuration
* Your OnePlus 3 may need extra settings if you want to send SMS messages with your BASE SIM card. Follow the instructions below for setting up the BASE SMS center.
* Go to the Start screen.
* Drag the arrow symbol up.
* Choose *Messages*.
* Choose the options symbol.
* Choose *Settings*.
* Choose *Set the SIM"1"s SMSC number*.
* Enter +32 486 0000 05 and choose *OK*.
* Choose *OK*.
* The SMS centre has been set.
* Return to the Start screen.
* This OnePlus 3 can now be used for receiving and sending SMS in Belgium and abroad.