How can I transfer my data and contact numbers from my samsung galaxy J7 to my laptop?

In this situation, what you need to do is to try a efficient method, then you don't need to learn many difficult steps to do this thing.
By using MobiKin Assistant for Android program, you can transfer your Samsung phone data including your contact numbers to computer in a effective way.
MobiKin Assistant for Android Windows Version
Best Android Phone Files Transfer Software
MobiKin Assistant for Android Best Android File Manager to Backup SMS...

You can through this way to do this thing, and you will solve your problem fastly.
Transfer Files Between Samsung Phone and Computer
How to Transfer Contacts from Samsung Galaxy to PC

To transfer your data and contact numbers from samsung galaxy J7 to your laptop, you need to ask help from pro Samsung data backup tool, which helps you get access to all data and contacts numbers and transfer them to computer for backup. Transfer Contacts from Samsung Galaxy Note to Computer

Connect your J7 to your laptop.
When connected, you will get a notification on your phone.
Select the option which says MTP.
Make sure your laptop is connected to the internet when you do this procedure so that the laptop can install the missing drivers.

Once this is complete, you will be able to see your phone as a device in "MY Computer".
You can open that up and transfer your data as u please...


For transferring your contacts, open up your phone app and select the option to view your contacts. In that page, got to the options and you will see an option to export your contacts... Export it to your phone memory or SD card from where you can copy it to your laptop.

Use Kies or use a usb cable to your computer and simply copy/paste folders you want