The call clarity is excellent, the bluetooth and wifi is superb. I bought this mini smartphone to give it to my grandson as a gift for his birthday.
I get 300+ mbps with mint mobile (t-mobile towers) & the phone is just immaculate. The only minor, very minor, downside for me, is that they don't have the blinking notification light on this model.
It replaces a umidigi one pro that i had for almost 4 years. The phone is quick, bright and has a lot of storage.
I returned this phone and made the sound purchase of a motorola once again, its functionality is flawless. Still trying to contact umidigi to get a fix or will have to return phone. A waste of money.