Thank you so much for your time and for the very pleasant phone call, @user_dc7e62 . Unfortunately, we can't purchase the Samsung on an installment plan. I just researched the bank account situation again – even if we had a German bank account, the payment still wouldn’t be possible because your sister's contract must be active for at least 6 months before this can be done. So, unfortunately, the only option here is to acquire the device in another way. I really wish I could have given you a different answer. Nonetheless, I wish you and your sister a wonderful weekend. Kind regards ^Caro