"How can I do to extract all the contacts from my Samsung Galaxy S7 that stucking in blank screen, I want to flash the ROM, any one who can help?"
Well, to fix a Samsung that stuck in blank screen, or recover data from blank screen Samsung, you just need the Samsung Data Recovery.
Samsung Data Recovery as the world's No.1 data recovery tool which can directly Recover Deleted Text Messages, Contacts, Videos, Photos, Call logs, Whatsapp Messages and other Document Files from Your Samsung Galaxy Phone and SD card. So, you can easily to recover data from a broken Samsung Galaxy phone by uisng this tool.
Step 1. Launch the program and connect your phone to PC
Step 2. Choose the fault type of your device
Step 3. Enter Download Mode on the Samsung Phone
Step 4. Analyze the Samsung Phone