47Accessories and tipsThis chapter shows you how to use accessories with your smartphone, as well asprovide useful tips for when you are using your smartphone.Using the headsetYour smartphone is compatible with headsets with built-in microphone for handsfreeuse when making calls.To use the headset, plug it into the 3.5 mm headphone jack at the top of the phone.When the headset is plugged in, all audio is routed to the headset, and the speakersare turned off.• To answer an incoming call, press the button on the microphone.• Adjust the volume using the volume up/down button on the smartphone.• End the call by pressing the button again.Using a Bluetooth headsetYour smartphone’s Bluetooth functions make it fully compatible with all Bluetoothheadsets. This allows you to use the unit handsfree when making calls, without theinconvenience of wires.Creating a new access pointWhen you need to add another GPRS/3G/EDGE connection on your phone, obtainthe access point name and settings (including username and password if required)from your wireless service provider.1. Open the Application menu and tap Settings > More... > Mobile networks >Access Point Names, and select an operator.2. Tap the Menu icon and then tap New APN.3. Enter the APN settings. Tap an item to adjust it.4. When you have finished, tap the Menu icon and then tap Save.Important: Some providers and countries do not allow the use of a smartphoneas a modem over HSDPA. Please check with your provider before attempting todo so.Inserting a microSD cardYour smartphone features a memory expansion slot that accepts a microSD card toexpand memory and storage capacity.Please refer to "SIM card lock" on page 8 for instructions on installing a microSDcard.