Xiaomi Redmi 4a is Awesome phone in lowest price.
It has a special feature, you can change notification light but you can’t change in Redmi 4 ??, but it does not have fingerprint sensor, 4100 mAh battery and curved display.
if you want to buy a cheaper phone than I recommend you to buy Redmi 4a but you have budget than you buy Redmi 4.??