After using this app for 6 month i am writing this review. And Google for your kind information i am not using low end phone i am using MI 11x i think which is enough to handle this app. 1. It is very slow app. Lags most of the time. Keypad opening time is very slow. 2. Because of this i am using Truecaller app. Which is very very smooth and lagfree. 3. I think that Knowing google is giving this dialer in most of the company phones.