From the Home Screen, swipe to the left. Scroll down and tap on Settings. Scroll down to cellular + SIM. Scroll down to SIM settings. Enter Solavei in the SIM name. Select 4G in Highest Connection Speed. Network Selection should be automatic. Cellular connection profile should remain T-Mobile LTE*. Tap Edit Internet APN. Enter "solavei" in the APN field (no quotations). Tap the save icon (circle with a disk). Tap Edit MMS APN. Enter "solavei" in the APN field (no quotations). Scroll to MMSC, and enter: http://solavei.mmsmvno.com/mms/wapenc Tap the save icon. Tap on Windows Logo to return to the home screen. Swipe left again. Scroll to Wi-Fi Calling. Slide the slider to the Off position. At this time turn the phone off, and then back on again. Test the settings by sending a picture message to yourself. Tap the Menu icon. Tap Browser. Enter a non-Google web site to test. *When first powering on the device and asked to select a network, choose the T-Mobile LTE option. **If you are having trouble editing or accessing the APNs we've had some success with this application which can be downloaded from the Windows Phone Store. Additional Assistance: If you have followed the steps above and are having trouble setting up your phone try using our interactive Self Help Troubleshooting Guide. If you have further questions, you can ask one of our Solavei Experts in our online Support Community below. Simply type in your question and click the Ask button.