I’ve been using this mobile for a month. Upto now there is no sign of lag, network problem. Design is super class. Look is outstanding. This is a best product from one plus . it worth its cost . It’s OS is smooth and ui is class . it has 4g connectivity.
Extended memory. but of you want to use dual sim external storage should be removed. we can use either dual sim or external memory. Display is quite impressive. Bright and elegant.