Asslamualaikum warahmatullahiwabrakatuhu I am sheeraz nawaz khan sorry to say that this is not a good powerbank to use well I m using this power bank and I am 100% sure that this power bank will damage your smartphone well this type of power bank is for the phone which cost is of about 1lakhs but again dont buy this power bank for smartphone I know that the power bank is essential for a human life because if you are travelling and your phone is discharge then its is essential to use a power bank
Thank you