Galaxy S7 will soon receive One UI update based on Android 9 Pie
Samsung Galaxy S7 edge review - Android Authority
Galaxy S7 might get Android 9 and OneUI : r/samsung
Amazon.com: HEHUI Selfie Stick Tripod Stand Holder Extendable with Bluetooth Remote Compatible with Samsung Galaxy S7/7 Plus /S8/8 plus/S9/9 Plus iOS and Android Cellphone/Phone X/Phone 8/8 Plus : Cell Phones & Accessories