Well, Checking account is now easy because Diamond bank now have a mobile USSD code that allows you to check your Diamond bank account balance via phone. Continue reading to see code for checking account balance on Diamond bank directly on your mobile phone below;. If you find this helpful, do let your friends using Diamond bank get this tips by sharing to your social media accounts. If you have queries or additions, use the comment box below. I will advise you to forward the question to their customer care rep on Twitter or Facebook or simply walk into my Diamond bank for an answer.