Transfer files without USB or internet from Android phone to computer and vice versa

Transfer files from computer to mobile and vice versa without USB or internet.

Just follow the below steps

1. Download Airdroid apk file from Google App store and install it in the mobile phone.

Note : Different versions Android phones have different setting navigation .But it would be somewhat similar.
I am using Marshmallow

2. Goto Settings -> Mobile hotspot and tethering

Tap on Mobile hotspot

3. Configure Allowed devices to access the hotspot
Skip this step if you want to allow any device to get connected to this hotspot  But it is recommended to add the allowed devices to the whitelist as there are chances that your network can be hacked. If you don't want to allow other devices to intervene, add a list of devices which are allowed to access the hotspot to do the same follow the below steps

1. Go to More option available in the top right corner
2. Tap on Allowed devices
3. Tap on Add
4. Add the Allowed devices
5. Enter any name
6. MAC address of the computer

To find MAC address of the Windows computer perform below steps

1. Open command prompt
2. Enter ipconfig -a.
3. And there will be list of details
4. Physical address is the MAC address of the computer

4. Configure Hotspot

1. Go to More option available in the top right corner
2. Tap on Configure Mobile hotspot. 
3. Enter hotspot name
4. Enter password(default password will be provided. It can be modified)
5. Tap on save

Now the hotspot is enabled and ready to be used.

5. Open the installed Airdroid in the mobile phone

Tap on configure network(If it does not capture the configured hotspot)
and then select the the wifi hotspot created earlier or it will automatically select the hotspot created
And one url will be created and displayed on the screen as shown below

6. Now on the computer, Switch on the wifi and connect to the hotspot created in the mobile phone. Now both computer and mobile phone are on same network.

7. Enter the given url in the browser,  it will prompt to accept the request in the mobile phone. Tap on Accepts as shown

8. Now you are all set to transfer files

9. To transfer files Click on files-> Navigate to the desired folder and there will be two options to upload and download as shown below