According to our information, our Samsung Galaxy S5 Mini is not branded. As long as the SIM card is a micro SIM card, you can use this with the phone without any problems.
You will need a micro-SIM format SIM card for this smartphone. Please check your form factor and if you do not have a micro-SIM, contact your mobile phone provider for a new suitable SIM card: http://www.tarif4you.de/news...
Whatsapp can be downloaded free of charge from the Google Playstore: https://play.google.com/store...