From very long time I thinking to purchase a power bank but I was confused to buy which one. and I travel in different village because for my business purpose so I always need a trusted brand power bank and a good quality and than my friend said me that mi 2i 20000mah power is best and it will help in backuping my phone and I completed my all works in my travel. And it charged my MI NOTE5 pro and also my one plus 5t and its work awesome always and charge my phone and helps me to connect with my all works. It charge too fast my phone as well as power bank. And I will say its a best choice in all power banks to purchase. Its in less price and best quality and best in charge. Love this power bank awesome