Send contacts from another Android phone
Pair the two phones by Bluetooth (Settings → Connected devices).
On the old phone, open the Contacts app.
Select all contacts → Share → Bluetooth.
Choose the Kosher Qin Phone and accept the transfer on it.
From an iPhone or iPad
Apple devices generally don’t send files to Android phones by Bluetooth. Instead:
Contacts: sync them to a Google account, then use Google Contacts on the Kosher Qin Phone.
Photos and files: share them by email or through Google Photos.
Transferring files from a computer
You can use a USB cable instead: plug the phone into the computer, pull down the notification, tap the USB option and choose File transfer.