[Galaxy S3] how to install the .p12 and.pfx client certificate for Microsoft Activesync?

Follow the following steps to install the .p12/.pfx certificate installation:

1. Copy the certificate or key store from your computer to the root of your device's internal storage (that is, not in a folder) or the Download folder of your device's internal storage
2. Open exchange account settings
3. Go to "Exchange Server Settings"
4. Check "Use client certificate"
5. Click on "Client certificate"
6. In case show "No Certificate" click add(+) to add an certificate
7. Add your desired certificate from the list
8. Enter password to extract the certificate.